Javascript

Question

我要创建一个提交后一分钟不能提交的表单。

<form id="myForm" action="<%=response.encodeURL(request.getContextPath()
                    + " /upisKorisnika.html ")%>" method="POST">
    <table id='userInput' class="display" border="0" style="font-family: Arial; font-size: 18px;">
        <tr>
            <td>
                <c:out value="E-mail: " />
            </td>
            <td>
                <input type="text" id="email" name="email">
            </td>
        </tr>
        <tr>
            <td colspan="2" style="text-align: center">
                <button onClick="submitform()">Submit</button>
            </td>
        </tr>
    </table>

据我所知，这个问题将在 javascript 中得到解决：

<script type="text/javascript">
function submitform(){
    document.getElementById("myForm").submit;
}
</script>

但是怎么办？我可以使用某种计时器吗？

Answer 1

您不应使用点击事件来提交。
由于页面被提交卸载，您需要使用cookie来节省时间并隐藏提交按钮:

例如

test page

<style>
#subbut { display:none }
</style>
<script>
window.onload=function() { // when the page loads
  var time = getCookie("lastSubmitted"),diff=0;
  if (time) { // we had a cookie
    time = +time; // convert to number
    diff = new Date().getTime()-time;
  }
  diff = 60000-diff;
  if (diff<0) diff=0;
  setTimeout(function() { // show in diff milliseconds
    document.getElementById("subbut").style.display="block";//show it
  },diff);
  document.getElementById("myForm").onsubmit=function() { 
    document.getElementById("subbut").style.display="none";
    var now = new Date().getTime();
    setCookie("lastSubmitted",now);
    return false; // REMOVE THIS WHEN TESTED
  }
}

</script>

<form id="myForm" ...
        <td colspan="2" style="text-align: center">
            <button type="submit" id="subbut">Submit</button>
        </td>

如果您需要，这里有一个 cookie 脚本

// from quirksmode
function setCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}

function getCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

Javascript - 提交后一分钟无法提交的表单

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