无法使用全局或局部变量访问输入值

Question

我无法获取变量 height 和 weight 的值。我将其设为全局并重命名，但它仍然无法正常工作。快速运行下代码：

表单存储用户输入并将其写入聊天
表格应包含身高和体重，然后计算 BMI
表格应使用运行第二步的测试条件评估身高、体重和 BMI。

var arr = "";

jQuery(document).ready(function() {
  //Answer in the input Form
  jQuery('#modal-form').submit(function(e) {
    e.preventDefault();
    var attr = $("#form-input").attr("chat");
    var form_input = $('#form-input').val().toLowerCase();

    chatbox(attr, form_input);
    $(".para-cont").animate({
      scrollTop: $('.para-cont').prop("scrollHeight")
    }, 1000);
    $("#form-input").val("");

  });

  function chatbox(attr, input) {
    //height and weight variables 

    height = $('#height').val();
    weight = $('#weight').val();
    BMI = (weight * 0.45) / ((height * .025) * (height * .025));

    if (attr == "gender") {
      if (input == "male" || input == "female") {
        $("#form-input").attr("chat", "fname");
        $('#question2').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        setTimeout(function() {
          $("#question2").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

        arr = "gender:" + input + "," + arr;

        if (input == "male") {
          setTimeout(function() {
            $('#question2').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Response set to male.</label></div></div><div class="clearfix"></div></div>');
          }, 1500);
        }
      } else {
        $('#question2').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        setTimeout(function() {
          $('#question2').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">I do not recognize your input. Please say <b>female</b> or <b>male</b>.</label></div></div><div class="clearfix"></div></div>');
        }, 1500);
      }

    }

    if (attr == "fname") {
      if (input.length < 3) {
        $('#question3').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Please enter your full name</label></div></div><div class="clearfix"></div></div>');
      } else {
        $("#form-input").attr("chat", "height");
        $('#question3').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#question3').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Cool name, ' + input + '.</label></div></div><div class="clearfix"></div></div>');
        $(".col-md-9").scrollTop($('.col-md-9')[0].scrollHeight);
        setTimeout(function() {
          $("#question3").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

        arr = "name:" + input + "," + arr;
        return false;
      }
    }
    if (attr == "height") {

      var height1 = input.match(/\d+/g);

      if (height1 >= 58 && height1 <= 62.99) {
        $("#form-input").attr("chat", "weight");
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#bmiVal').append('<input type="" class="form-control" id="height" value="' + height1 + '">');
        setTimeout(function() {
          $("#question4").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

      } else if (height1 >= 63 && height1 < 68) {
        $("#form-input").attr("chat", "weight");
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#bmiVal').append('<input type="" class="form-control" id="height" value="' + height1 + '">');
        setTimeout(function() {
          $("#question4").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

      } else if (height1 >= 68) {
        $("#form-input").attr("chat", "weight");
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#bmiVal').append('<input type="" class="form-control" id="height" value="' + height1 + '">');
        setTimeout(function() {
          $("#question4").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

      } else {
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#question4').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">I only recognize height metrics in inches. Follow these links to convert <a href="">feet</a> or <a href="">meters</a> to inches.</label></div></div><div class="clearfix"></div></div>');
      }
    }
    if (attr == "weight") {

      var weight1 = input.match(/\d+/g);

      if (input < 91 || input > 501) {
        $('#question5').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">I do not recognize your entry. Please enter a weight between 90 - 500 pounds.</label></div></div><div class="clearfix"></div></div>');

      } else {
        $('#bmiVal').append('<input type="" class="form-control" id="weight" value="' + weight1 + '">');



        if (BMI >= 19 && BMI < 23) {
          if (height >= 58 && height < 63) {
            $('.modeler1').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler2').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler3').show();
          } else {
            document.write('low BMI' + weight)
          }

        } else if (BMI >= 23 && BMI < 28) {
          if (height >= 58 && height < 63) {
            $('.modeler4').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler5').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler6').show();
          } else {
            document.write('average BMI')
          }


        } else if (BMI >= 28 && BMI < 34) {
          if (height >= 58 && height < 63) {
            $('.modeler7').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler8').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler9').show();
          } else {
            document.write('plus BMI')
          }
        } else if (BMI >= 34 && BMI < 40) {
          if (height >= 58 && height < 63) {
            $('.modeler10').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler11').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler12').show();
          } else {
            document.write('obese BMI')
          }
        } else {
          $('#question5').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Hmmm, this is odd. Your BMI is: ' + BMI + ' and your height is:' + height + ' and your weight is:' + weight + '.</label></div></div><div class="clearfix"></div></div>');
        }
      }
    }
  }
});

body {
  background-color: fff;
  font-family: Arial, Helvetica, sans-serif;
}

h4 {
  margin: 50px 0 5px 0;
  text-align: center;
  font-size: 14px;
}

.right-float {
  float: right;
  width: 55%;
  padding: 0 20px;
}

.left-float {
  float: left;
  width: 40%;
  height: 560px;
  max-height: 560px;
  padding: 0 20px;
  border-radius: 0;
  padding: 0;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
  -webkit-box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
  -moz-box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
}

h1 {
  color: #000;
}

.modeler {}

.model-wrap {
  float: left;
  width: 60%;
  border: solid 2px red;
  min-height: 600px;
}

.hide {
  display: none;
}

.button-wrap {
  display: flex;
  justify-content: center;
  float: left;
}

.buttonOn {
  width: 94px;
  padding: 8px 0;
  text-align: center;
  font-size: 12px;
  background-color: rgb(214, 70, 4);
  color: black;
  border-radius: 4px;
}

#form-input {
  padding: 9px;
  width: 325px;
  border-radius: 4px;
}

.col-md-9 {
  float: right;
  width: 70%;
  height: 400px !important;
  max-height: 400px !important;
  min-height: 400px;
  font-size: 14px;
  overflow-y: scroll;
  padding-right: 6px;
}

.btn1 {
  outline: none;
  line-height: 1;
  padding: 9px;
  width: 110px;
  border-radius: 3px;
  background-color: rgb(204, 79, 33);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  transition: all .4s ease-in-out;
  -webkit-transition: all .4s ease-in-out;
  -moz-transition: all .4s ease-in-out;
  -o-transition: all .4s ease-in-out;
  -ms-transition: all .4s ease-in-out;
}

#modal-form {
  position: relative;
  top: 30px;
}

.ar-label {
  color: #fff;
}

.talk-bubble {
  display: inline-block;
  position: relative;
  height: auto;
  background-color: #990000;
  margin-bottom: 20px;
}

.tri-right.border.btm-left:before {
  content: ' ';
  position: absolute;
  width: 0;
  height: 0;
  left: -8px;
  right: auto;
  top: auto;
  bottom: -40px;
  border: 32px solid;
  border-color: transparent transparent transparent #940A0A;
}

.tri-right.btm-left:after {
  content: ' ';
  position: absolute;
  width: 0;
  height: 0;
  left: 0px;
  right: auto;
  top: auto;
  bottom: -20px;
  border: 22px solid;
  border-color: transparent transparent transparent #990000;
}

.talktext {
  padding: 1em;
  text-align: left;
  line-height: 1.5em;
}

.talktext p {
  /* remove webkit p margins */
  -webkit-margin-before: 0em;
  -webkit-margin-after: 0em;
}

.border {
  border: 8px solid #666;
}

.round {
  border-radius: 15px;
  -webkit-border-radius: 15px;
  -moz-border-radius: 15px;
}

.modal-box input[type="text"],
.modal-box input[type="email"],
.modal-box input[type="password"],
.modal-box select {
  /* padding: 0 0 15px;*/
  border-width: 0 0 1px;
  background: #000;
  border-color: #000;
  color: #f5f5f5;
  height: 40px;
  margin-bottom: 20px;
}

.modal-body {
  padding: 30px;
}

.modal-body {
  border-top: 5px solid transparent;
}

.reply-box {
  margin: 10px 0px 10px 5px;
  padding: 6px 20px;
  float: right;
  border: 2px solid #d8d6d6;
  background: #f7b9b9;
  border-radius: 10px;
  width: 80%;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<body>
  <!----- dialog start ------->
  <div class="left-float">
    <div id="onpageload" class="modal fade myModal in">
      <div class="modal-dialog modal-lg" role="document">
        <div class="modal-content">
          <div class="modal-body secondary-font">
            <div class="col-md-3" id="sophia">
              <img id="sophia-img" src="sophia.png" />
            </div>
            <div class="col-md-9">
              <div id="modal-sd-cont" class="para-cont">
                <div class="form-group" id="question1">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">                         
                  Hi there guest visitor! Are you female, male or non-binary?</label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question2" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
                  What is your name? 
              </label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question3" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
               Please enter your height in inches. For example you can say 64 inches.
              </label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question4" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
                    What is your weight in pounds?
                  </label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question5" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
                    Thank you for that information. 
                  </label>
                    </div>
                  </div>
                </div>

              </div>
              <!----- end modal-sd-cont --->
            </div>
            <!---- end col-md-9 ------>
            <form class="registration" id="modal-form"><br><br>
              <div class="input-group" id="modalform">
                <input type="text" id="form-input" chat="gender" autofocus name="" value="" placeholder="Enter your response here" class="form-control" aria-describedby="basic-addon2">
                <span class="input-group-addon pad-0 bg-none" id="basic-addon2">
              <button class="btn1" id="modal-convo">Enter</button>
            </span>
              </div>
            </form>
            <form id="bmiVal"> </form>
          </div>
        </div>
      </div>
    </div>
  </div>

  <div class="right-float" class="hide">
    <h2 style="text-align: center">Body Modeler</h2>
    <div id="shapeme" class="">
      <div id="modeler1" class="hide modeler">
        <h1>Success: Skinny Average</h1>>
      </div>
      <div id="modeler2" class="hide modeler">
        <h1>Success: Skinny Average</h1>
      </div>
      <div id="modeler3" class="hide modeler">
        <h1>Success: Skinny Tall</h1>
      </div>
      <div id="modeler4" class="hide modeler">
        <h1>Success: Average Short</h1>
      </div>
      <div id="modeler5" class="hide modeler">
        <h1>Success: Average Average</h1>
      </div>
      <div id="modeler6" class="hide modeler">
        <h1>Success: Average Tall</h1>
      </div>
      <div id="modeler7" class="hide modeler">
        <h1>Success: Plus Short</h1>
      </div>
      <div id="modeler8" class="hide modeler">
        <h1>Success: Plus Average</h1>
      </div>
      <div id="modeler9" class="hide modeler">
        <h1>Success: Plus Tall</h1>
      </div>
      <div id="modeler10" class="hide modeler">
        <h1>Success: Obese Short</h1>
      </div>
      <div id="modeler11" class="hide modeler">
        <h1>Success: Obese Average</h1>
      </div>
      <div id="modeler12" class="hide modeler">
        <h1>Success: Obese Tall</h1>
      </div>

    </div>
    <!---end shapeme --->
  </div>
  <!--- end right float --->

</body>

</html>

Answer 1

问题是你

weight = $("#weight").val();

在 chatbox() 的开头，在你做之前：

$('#bmiVal').append('<input type="" class="form-control" id="weight" value="' + weight1 + '">');

由于输入尚不存在，因此该值未定义。

您应该只使用 weight1 变量，无需从输入中读取它。并在权重验证后将分配 height、weight 和 BMI 的代码移动到最后的 else 子句中。

var arr = "";

jQuery(document).ready(function() {
  //Answer in the input Form
  jQuery('#modal-form').submit(function(e) {
    e.preventDefault();
    var attr = $("#form-input").attr("chat");
    var form_input = $('#form-input').val().toLowerCase();

    chatbox(attr, form_input);
    $(".para-cont").animate({
      scrollTop: $('.para-cont').prop("scrollHeight")
    }, 1000);
    $("#form-input").val("");

  });

  function chatbox(attr, input) {
    //height and weight variables 

    if (attr == "gender") {
      if (input == "male" || input == "female") {
        $("#form-input").attr("chat", "fname");
        $('#question2').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        setTimeout(function() {
          $("#question2").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

        arr = "gender:" + input + "," + arr;

        if (input == "male") {
          setTimeout(function() {
            $('#question2').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Response set to male.</label></div></div><div class="clearfix"></div></div>');
          }, 1500);
        }
      } else {
        $('#question2').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        setTimeout(function() {
          $('#question2').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">I do not recognize your input. Please say <b>female</b> or <b>male</b>.</label></div></div><div class="clearfix"></div></div>');
        }, 1500);
      }

    }

    if (attr == "fname") {
      if (input.length < 3) {
        $('#question3').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Please enter your full name</label></div></div><div class="clearfix"></div></div>');
      } else {
        $("#form-input").attr("chat", "height");
        $('#question3').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#question3').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Cool name, ' + input + '.</label></div></div><div class="clearfix"></div></div>');
        $(".col-md-9").scrollTop($('.col-md-9')[0].scrollHeight);
        setTimeout(function() {
          $("#question3").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

        arr = "name:" + input + "," + arr;
        return false;
      }
    }
    if (attr == "height") {

      var height1 = input.match(/\d+/g);

      if (height1 >= 58 && height1 <= 62.99) {
        $("#form-input").attr("chat", "weight");
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#bmiVal').append('<input type="" class="form-control" id="height" value="' + height1 + '">');
        setTimeout(function() {
          $("#question4").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

      } else if (height1 >= 63 && height1 < 68) {
        $("#form-input").attr("chat", "weight");
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#bmiVal').append('<input type="" class="form-control" id="height" value="' + height1 + '">');
        setTimeout(function() {
          $("#question4").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

      } else if (height1 >= 68) {
        $("#form-input").attr("chat", "weight");
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#bmiVal').append('<input type="" class="form-control" id="height" value="' + height1 + '">');
        setTimeout(function() {
          $("#question4").show();
          $(".para-cont").animate({
            scrollTop: $('.para-cont').prop("scrollHeight")
          }, 1000);
        }, 1500);

      } else {
        $('#question4').before('<div class="reply-box" ><p>' + input + '</p></div><div class="clearfix"></div><br>');
        $('#question4').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">I only recognize height metrics in inches. Follow these links to convert <a href="">feet</a> or <a href="">meters</a> to inches.</label></div></div><div class="clearfix"></div></div>');
      }
    }
    if (attr == "weight") {

      var weight1 = input.match(/\d+/g);

      if (weight1 < 91 || weight1 > 501) {
        $('#question5').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">I do not recognize your entry. Please enter a weight between 90 - 500 pounds.</label></div></div><div class="clearfix"></div></div>');

      } else {
        $('#bmiVal').append('<input type="" class="form-control" id="weight" value="' + weight1 + '">');

        var height = $('#height').val();
        var weight = weight1;
        var BMI = (weight * 0.45) / ((height * .025) * (height * .025));

        if (BMI >= 19 && BMI < 23) {
          if (height >= 58 && height < 63) {
            $('.modeler1').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler2').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler3').show();
          } else {
            document.write('low BMI' + weight)
          }

        } else if (BMI >= 23 && BMI < 28) {
          if (height >= 58 && height < 63) {
            $('.modeler4').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler5').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler6').show();
          } else {
            document.write('average BMI')
          }


        } else if (BMI >= 28 && BMI < 34) {
          if (height >= 58 && height < 63) {
            $('.modeler7').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler8').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler9').show();
          } else {
            document.write('plus BMI')
          }
        } else if (BMI >= 34 && BMI < 40) {
          if (height >= 58 && height < 63) {
            $('.modeler10').show();
          }
          if (height >= 63 && height < 68) {
            $('.modeler11').show();
          }
          if (height >= 68 && height < 77) {
            $('.modeler12').show();
          } else {
            document.write('obese BMI')
          }
        } else {
          $('#question5').before('<div class="form-group" ><div class="talk-bubble tri-right round btm-left"><div class="talktext"><label class="ar-label">Hmmm, this is odd. Your BMI is: ' + BMI + ' and your height is:' + height + ' and your weight is:' + weight + '.</label></div></div><div class="clearfix"></div></div>');
        }
      }
    }
  }
});

body {
  background-color: fff;
  font-family: Arial, Helvetica, sans-serif;
}

h4 {
  margin: 50px 0 5px 0;
  text-align: center;
  font-size: 14px;
}

.right-float {
  float: right;
  width: 55%;
  padding: 0 20px;
}

.left-float {
  float: left;
  width: 40%;
  height: 560px;
  max-height: 560px;
  padding: 0 20px;
  border-radius: 0;
  padding: 0;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
  -webkit-box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
  -moz-box-shadow: 0 0 25px rgba(0, 0, 0, 0.2);
}

h1 {
  color: #000;
}

.modeler {}

.model-wrap {
  float: left;
  width: 60%;
  border: solid 2px red;
  min-height: 600px;
}

.hide {
  display: none;
}

.button-wrap {
  display: flex;
  justify-content: center;
  float: left;
}

.buttonOn {
  width: 94px;
  padding: 8px 0;
  text-align: center;
  font-size: 12px;
  background-color: rgb(214, 70, 4);
  color: black;
  border-radius: 4px;
}

#form-input {
  padding: 9px;
  width: 325px;
  border-radius: 4px;
}

.col-md-9 {
  float: right;
  width: 70%;
  height: 400px !important;
  max-height: 400px !important;
  min-height: 400px;
  font-size: 14px;
  overflow-y: scroll;
  padding-right: 6px;
}

.btn1 {
  outline: none;
  line-height: 1;
  padding: 9px;
  width: 110px;
  border-radius: 3px;
  background-color: rgb(204, 79, 33);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  transition: all .4s ease-in-out;
  -webkit-transition: all .4s ease-in-out;
  -moz-transition: all .4s ease-in-out;
  -o-transition: all .4s ease-in-out;
  -ms-transition: all .4s ease-in-out;
}

#modal-form {
  position: relative;
  top: 30px;
}

.ar-label {
  color: #fff;
}

.talk-bubble {
  display: inline-block;
  position: relative;
  height: auto;
  background-color: #990000;
  margin-bottom: 20px;
}

.tri-right.border.btm-left:before {
  content: ' ';
  position: absolute;
  width: 0;
  height: 0;
  left: -8px;
  right: auto;
  top: auto;
  bottom: -40px;
  border: 32px solid;
  border-color: transparent transparent transparent #940A0A;
}

.tri-right.btm-left:after {
  content: ' ';
  position: absolute;
  width: 0;
  height: 0;
  left: 0px;
  right: auto;
  top: auto;
  bottom: -20px;
  border: 22px solid;
  border-color: transparent transparent transparent #990000;
}

.talktext {
  padding: 1em;
  text-align: left;
  line-height: 1.5em;
}

.talktext p {
  /* remove webkit p margins */
  -webkit-margin-before: 0em;
  -webkit-margin-after: 0em;
}

.border {
  border: 8px solid #666;
}

.round {
  border-radius: 15px;
  -webkit-border-radius: 15px;
  -moz-border-radius: 15px;
}

.modal-box input[type="text"],
.modal-box input[type="email"],
.modal-box input[type="password"],
.modal-box select {
  /* padding: 0 0 15px;*/
  border-width: 0 0 1px;
  background: #000;
  border-color: #000;
  color: #f5f5f5;
  height: 40px;
  margin-bottom: 20px;
}

.modal-body {
  padding: 30px;
}

.modal-body {
  border-top: 5px solid transparent;
}

.reply-box {
  margin: 10px 0px 10px 5px;
  padding: 6px 20px;
  float: right;
  border: 2px solid #d8d6d6;
  background: #f7b9b9;
  border-radius: 10px;
  width: 80%;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<body>
  <!----- dialog start ------->
  <div class="left-float">
    <div id="onpageload" class="modal fade myModal in">
      <div class="modal-dialog modal-lg" role="document">
        <div class="modal-content">
          <div class="modal-body secondary-font">
            <div class="col-md-3" id="sophia">
              <img id="sophia-img" src="sophia.png" />
            </div>
            <div class="col-md-9">
              <div id="modal-sd-cont" class="para-cont">
                <div class="form-group" id="question1">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">                         
                  Hi there guest visitor! Are you female, male or non-binary?</label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question2" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
                  What is your name? 
              </label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question3" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
               Please enter your height in inches. For example you can say 64 inches.
              </label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question4" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
                    What is your weight in pounds?
                  </label>
                    </div>
                  </div>
                </div>
                <div class="form-group" id="question5" style="display:none;">
                  <div class="talk-bubble tri-right round btm-left">
                    <div class="talktext">
                      <label class="ar-label">
                    Thank you for that information. 
                  </label>
                    </div>
                  </div>
                </div>

              </div>
              <!----- end modal-sd-cont --->
            </div>
            <!---- end col-md-9 ------>
            <form class="registration" id="modal-form"><br><br>
              <div class="input-group" id="modalform">
                <input type="text" id="form-input" chat="gender" autofocus name="" value="" placeholder="Enter your response here" class="form-control" aria-describedby="basic-addon2">
                <span class="input-group-addon pad-0 bg-none" id="basic-addon2">
              <button class="btn1" id="modal-convo">Enter</button>
            </span>
              </div>
            </form>
            <form id="bmiVal"> </form>
          </div>
        </div>
      </div>
    </div>
  </div>

  <div class="right-float" class="hide">
    <h2 style="text-align: center">Body Modeler</h2>
    <div id="shapeme" class="">
      <div id="modeler1" class="hide modeler">
        <h1>Success: Skinny Average</h1>>
      </div>
      <div id="modeler2" class="hide modeler">
        <h1>Success: Skinny Average</h1>
      </div>
      <div id="modeler3" class="hide modeler">
        <h1>Success: Skinny Tall</h1>
      </div>
      <div id="modeler4" class="hide modeler">
        <h1>Success: Average Short</h1>
      </div>
      <div id="modeler5" class="hide modeler">
        <h1>Success: Average Average</h1>
      </div>
      <div id="modeler6" class="hide modeler">
        <h1>Success: Average Tall</h1>
      </div>
      <div id="modeler7" class="hide modeler">
        <h1>Success: Plus Short</h1>
      </div>
      <div id="modeler8" class="hide modeler">
        <h1>Success: Plus Average</h1>
      </div>
      <div id="modeler9" class="hide modeler">
        <h1>Success: Plus Tall</h1>
      </div>
      <div id="modeler10" class="hide modeler">
        <h1>Success: Obese Short</h1>
      </div>
      <div id="modeler11" class="hide modeler">
        <h1>Success: Obese Average</h1>
      </div>
      <div id="modeler12" class="hide modeler">
        <h1>Success: Obese Tall</h1>
      </div>

    </div>
    <!---end shapeme --->
  </div>
  <!--- end right float --->

</body>

</html>

无法使用全局或局部变量访问输入值

Can't Access Value of Input Using Global or Local Variable

javascript

variables

input

global-variables

local-variables