如果选择了特定的单选按钮，如何显示表单

Question

我想在选中单选按钮时显示特定的表单。该代码似乎对我来说很好用，除了当页面加载时它显示两种形式而不是一种形式，其值在输入标记中检查

<?php
function print_form()
{
$newform = "
<body>
<section>
<div><strong>Select your Quantity Format</strong></div>

    <input type=\"radio\" id=\"radio1\" name=\"radios\" value=\"radio1\" checked onclick=\"show()\">
    <label for=\"radio1\">Per Unit</label>

    <input type=\"radio\" id=\"radio2\" name=\"radiOS\" value=\"radio2\" onclick=\"show()\">
    <label for=\"radio2\">Per Box</label>

<form method=\"post\" id=\"unit\" action=\"{$_SERVER['PHP_SELF']}\" >
<table border=1 cellpadding=3 cellspacing=3 width='30%'>
<tr>
<th colspan=2 align='left' bgcolor='#EAEAEA'>Add Medicine/Item Details</th>
</tr>
<tr>
<td>Medicine/Item Name</td>
<td><input type=\"text\" name=\"Medicine/Item_Name\"></td>
</tr>
<tr>
<td>Company Name</td>
<td><input type=\"text\" name=\"Company_Name\"></td>
</tr>
<tr>
<td>Stowage Rack No.</td>
<td><input type=\"text\" name=\"Rack\" onkeypress=\"return isNumberKey(event)\" ></td>
</tr>   
<tr><td colspan=2><input type=\"submit\" value=\"Add Record\">
    <input type=\"hidden\" value=\"true\" name=\"unit\"></td></tr>
</table></form>

<form method=\"post\" id=\"box\" action=\"{$_SERVER['PHP_SELF']}\" >
<table border=1 cellpadding=3 cellspacing=3 width='30%'>
<tr>
<th colspan=2 align='left' bgcolor='#EAEAEA'>Add Medicine/Item Details</th>
</tr>
<tr>
<td>Medicine/Item Name</td>
<td><input type=\"text\" name=\"Medicine/Item_Name\"></td>
</tr>
<tr>
<td>Company Name</td>
<td><input type=\"text\" name=\"Company_Name\"></td>
</tr>
<tr>
<td>Minimum Stock (Boxes)</td>
<td><input type=\"text\" name=\"Minimum_Stock_box\" onkeypress=\"return isNumberKey(event)\"></td>
</tr>
<tr>
<td>Stowage Rack No.</td>
<td><input type=\"text\" name=\"Rack\" onkeypress=\"return isNumberKey(event)\" ></td>
</tr>       
<tr><td colspan=2><input type=\"submit\" value=\"Add Record\">
    <input type=\"hidden\" value=\"true\" name=\"box\"></td></tr>
</table></form>

</section>
<body>
";

return $newform;    
}


if(isset($_POST['unit']))
{
save_record_unit();
}

else if(isset($_POST['box']))
{
save_record_box();
}
else
{
print print_form();
}
?>

我用的JavaScript如下

function show()
{       
var radios = document.getElementsByName("radios");
var unit =  document.getElementById("unit");
var box =  document.getElementById("box");

        box.style.display = 'block';
for(var i = 0; i < radios.length; i++) {

 radios[i].onclick = function() {
    var val = this.value;
    if(val == 'radio1' ){
        unit.style.display = 'block';
        box.style.display = 'none';
    }
    else if(val == 'radio2'){
         unit.style.display = 'none';
         box.style.display = 'block';
    }    

  }
 }
}

Answer 1

你好像一开始忘了隐藏一个。您可以直接在 html 中使用 style='display:none' 或在 css class 中或在页面加载时直接使用 jquery 进行操作。

Answer 2

确定检查我的测试，你会看到它有效，随时查看源代码：
your test page 或者这里

function show()
{   
var radios = document.getElementsByName("radios");
var unit =  document.getElementById("unit");
var box =  document.getElementById("box");

        box.style.display = 'none';
for(var i = 0; i < radios.length; i++) {

 radios[i].onclick = function() {
    var val = this.value;
    if(val == 'radio1' ){
        unit.style.display = 'block';
        box.style.display = 'none';
    }
    else if(val == 'radio2'){
         unit.style.display = 'none';
         box.style.display = 'block';
    }    

  }
 }
}
show();//to start hidding box

<section>
<div><strong>Select your Quantity Format</strong></div>

    <input type="radio" id="radio1" name="radios" value="radio1"  onclick="show();" checked>
    <label for="radio1">Per Unit</label>

    <input type="radio" id="radio2" name="radios" value="radio2" onclick="show();">
    <label for="radio2">Per Box</label>

<form method="post" id="unit" action="" >
<table border=1 cellpadding=3 cellspacing=3 width='30%'>
<tr>
<th colspan=2 align='left' bgcolor='#EAEAEA'>Add Medicine/Item Details</th>
</tr>
<tr>
<td>Medicine/Item Name</td>
<td><input type="text" name="Medicine/Item_Name"></td>
</tr>
<tr>
<td>Company Name</td>
<td><input type="text" name="Company_Name"></td>
</tr>
<tr>
<td>Stowage Rack No.</td>
<td><input type="text" name="Rack" onkeypress="return isNumberKey(event);" ></td>
</tr>   
<tr><td colspan=2><input type="submit" value="Add Record">
    <input type="hidden" value="true" name="unit"></td></tr>
</table></form>
    
<form method="post" id="box" action="" >
<table border=1 cellpadding=3 cellspacing=3 width='30%'>
<tr>
<th colspan=2 align='left' bgcolor='#EAEAEA'>Add Medicine/Item Details</th>
</tr>
<tr>
<td>Medicine/Item Name</td>
<td><input type="text" name="Medicine/Item_Name"></td>
</tr>
<tr>
<td>Company Name</td>
<td><input type="text" name="Company_Name"></td>
</tr>
<tr>
<td>Minimum Stock (Boxes)</td>
<td><input type="text" name="Minimum_Stock_box" onkeypress="return isNumberKey(event);"></td>
</tr>
<tr>
<td>Stowage Rack No.</td>
<td><input type="text" name="Rack" onkeypress="return isNumberKey(event);" ></td>
</tr>       
<tr><td colspan=2><input type="submit" value="Add Record">
    <input type="hidden" value="true" name="box"></td></tr>
</table></form>

</section>

Answer 3

这是你的 php 函数：

function show()
{   
var radios = document.getElementsByName("radios");
var unit =  document.getElementById("unit");
var box =  document.getElementById("box");

        box.style.display = 'none';
for(var i = 0; i < radios.length; i++) {

 radios[i].onclick = function() {
    var val = this.value;
    if(val == 'radio1' ){
        unit.style.display = 'block';
        box.style.display = 'none';
    }
    else if(val == 'radio2'){
         unit.style.display = 'none';
         box.style.display = 'block';
    }    

  }
 }
}

.alert{ color:white; background-color:red;padding:2em;margin:2em;}

<body>
  <?php
function print_form(){
$newform="
<section>
<div><strong>Select your Quantity Format</strong></div>

    <input type=\"radio\" id=\"radio1\" name=\"radios\" value=\"radio1\"  onclick=\"show();\" checked>
    <label for=\"radio1\">Per Unit</label>

    <input type=\"radio\" id=\"radio2\" name=\"radios\" value=\"radio2\" onclick=\"show();\">
    <label for=\"radio2\">Per Box</label>

<form method=\"post\" id=\"unit\" action=\"\" >
<table border=1 cellpadding=3 cellspacing=3 width='30%'>
<tr>
<th colspan=2 align='left' bgcolor='#EAEAEA'>Add Medicine/Item Details</th>
</tr>
<tr>
<td>Medicine/Item Name</td>
<td><input type=\"text\" name=\"Medicine/Item_Name\"></td>
</tr>
<tr>
<td>Company Name</td>
<td><input type=\"text\" name=\"Company_Name\"></td>
</tr>
<tr>
<td>Stowage Rack No.</td>
<td><input type=\"text\" name=\"Rack\" onkeypress=\"return isNumberKey(event);\" ></td>
</tr>   
<tr><td colspan=2><input type=\"submit\" value=\"Add Record\">
    <input type=\"hidden\" value=\"true\" name=\"unit\"></td></tr>
</table></form>
    
<form method=\"post\" id=\"box\" action=\"\" >
<table border=1 cellpadding=3 cellspacing=3 width='30%'>
<tr>
<th colspan=2 align='left' bgcolor='#EAEAEA'>Add Medicine/Item Details</th>
</tr>
<tr>
<td>Medicine/Item Name</td>
<td><input type=\"text\" name=\"Medicine/Item_Name\"></td>
</tr>
<tr>
<td>Company Name</td>
<td><input type=\"text\" name=\"Company_Name\"></td>
</tr>
<tr>
<td>Minimum Stock (Boxes)</td>
<td><input type=\"text\" name=\"Minimum_Stock_box\" onkeypress=\"return isNumberKey(event);\"></td>
</tr>
<tr>
<td>Stowage Rack No.</td>
<td><input type=\"text\" name=\"Rack\" onkeypress=\"return isNumberKey(event);\" ></td>
</tr>       
<tr><td colspan=2><input type=\"submit\" value=\"Add Record\">
    <input type=\"hidden\" value=\"true\" name=\"box\"></td></tr>
</table></form>

</section>
<script> show();</script>";
return $newform;
}



if(isset($_POST['unit']))
{
    //save_record_unit();
    echo "<div class=\"alert\">save_record_unit</div>";
}

else if(isset($_POST['box']))
{
    //save_record_box();
    echo "<div class=\"alert\">save_record_box</div>";
}
else
{
print print_form();
}
?>
</body>

我已将 <script> show();</script> 放在函数 print_form() 的末尾，以便每次 php 调用该函数时由 javascript 执行 php

如果选择了特定的单选按钮，如何显示表单

How to show a form if a particular radio button is selected

html

javascript

php

forms

radio-button