我一直在尝试一切尝试自己解决这个问题，但在谷歌上找不到任何解决方案，或者我的初学者 php 技能无法胜任这项任务。所以请有人告诉我如何让表格只有在人们写了 15 个或更多的时候才提交。任何建议将不胜感激。以下是 css、javascript 和 html。
#container {
background: #ededed;
border: 1px solid #ddd;
margin: 0 auto;
padding: 10px;
position: relative;
width: 638px;
}
.error { color: #f00; }
ol.forms { list-style: none; overflow: hidden; }
ol.forms li { float: left; margin-bottom: 12px; width: 100%; }
ol.forms label { cursor: pointer; display: block; }
ol.forms textarea {
border: 1px solid #ddd;
float: left;
font: 14px/1.5em Georgia, Times, serif;
height: 120px;
margin-right: 5px;
overflow-y: auto;
padding: 5px;
width: 500px;
}
ol.forms textarea:focus { border: 1px solid #000; }
ol.forms div.wordCount { float: left; font-size: 20px; line-height: 30px; }
#quick50 {
background: #fff;
border: 1px solid #ddd;
font-size: 11px;
left: 5px;
padding: 5px;
position: fixed;
width: 188px;
}
$(document).ready(function() {
$("[class^='count[']").each(function() {
var elClass = $(this).attr('class');
var description = 0;
var maxWords = 0;
var countControl = elClass.substring((elClass.indexOf('['))+1, elClass.lastIndexOf(']')).split(',');
if(countControl.length > 1) {
description = countControl[0];
maxWords = countControl[1];
} else {
maxWords = countControl[0];
}
$(this).after('<div class="wordCount"><strong>0</strong> Words</div>');
if(description > 0) {
$(this).siblings('.wordCount').addClass('error');
}
$(this).bind('keyup click blur focus change paste', function() {
var text = jQuery.trim($(this).val()).replace(/\s+/g," ");
var numWords = text.split(' ').length;
if($(this).val() === '') {
numWords = 0;
}
$(this).siblings('.wordCount').children('strong').text(numWords);
if(numWords < description || (numWords > maxWords && maxWords != 0)) {
$(this).siblings('.wordCount').addClass('error');
} else {
$(this).siblings('.wordCount').removeClass('error');
}
});
});
});
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>jQuery Word Count</title>
<link href="wordcount.css" type="text/css" rel="stylesheet" media="screen,projection" />
<script type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="wordcount.js"></script>
</head>
<body>
<div id="container">
<h1>jQuery Word Count</h1>
<div class="quickContain">
<div id="quick50">
<h2>50 words for quick copying</h2>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam leo orci, porta eget, tincidunt sit amet, sagittis id, turpis. Aenean sed metus at leo ullamcorper dapibus. Duis vitae risus dignissim lectus dapibus faucibus! In porttitor, ante non adipiscing ultricies, magna velit blandit dui, a tempus ligula dolor eu orci? Sed.</p>
</div>
</div>
<ol class="forms">
<form action="submitcontent.php" method="post">
<li><label for="minWord">Min Word Textarea <em class="help">(15 words or more)</em></label>
<textarea onkeyup="limitWords(this,5);" name="minWord" class="count[15,0]" id="minWord"></textarea>
</li>
<input type="submit" value="Submit Content" onclick="return doSubmit()" />
</form>
</ol>
</div>
</body>
</html>
最佳答案
在我的脑海中，像这样的东西？
<textarea id="some-textarea" onkeypress="activateSubmit();">
</textarea>
<input type="submit" value="Submit" id="submit-button" disabled="disabled">
相应的地方:
<script>
function activateSubmit(){
var len = $('#some-textarea').val().split(" ").length;
if(len >= 15){ //15 words, hardcoded, probably change this to maxwords, or whatever.
$('#submit-button').removeAttr('disabled');
}
else{
$('#submit-button').attr('disabled', 'disabled');
}
}
</script>
关于JavaScript 字数统计表单验证，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/5364572/