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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>轻量级输入字数提示jQuery插件-B5教程网 www.bcty365.com</title>
<script type="text/javascript" src="js/jquery-1.3.2.min.js"></script>
<script type="text/javascript" src="js/jQuery.artTxtCount.js"></script>
<script>
// demo
jQuery(function(){ // 批量
$('.autoTxtCount').each(function(){
$(this).find('.text').artTxtCount($(this).find('.tips'), 140);
}); // 单个
$('#test').artTxtCount($('#test_tips'), 10); });
</script>
<style>
/* demo */ body {
font-size: 75%;
font-family: '微软雅黑';
}
#demo {
width: 500px;
margin: 0px auto;
}
#demo .help, #demo .help a {
color: #999;
}
#demo form {
margin: 20px 0;
padding: 8px;
background: #F4F4F4;
border: 1px solid #EDEDED;
}
#demo .tips {
color: #999;
padding: 0 5px;
}
#demo .tips strong {
color: #1E9300;
}
#demo .tips .js_txtFull strong {
color: #F00;
}
#demo textarea.text {
width: 474px;
}
</style>
</head> <body>
<div id="demo">
<h1>artTxtCount - 轻量级输入字数提示插</h1>
<p class="help">$('#text').artTxtCount($('#text_tips'), 10);</p>
<form class="autoTxtCount" action="" method="get">
<div>
<textarea class="text" name="" cols="50" rows="3"></textarea>
</div>
<div>
<button type="submit">提交</button>
<span class="tips"></span> </div>
</form>
<form class="autoTxtCount" action="" method="get">
<div>
<textarea class="text" name="" cols="50" rows="3"></textarea>
</div>
<div>
<button type="submit">提交</button>
<span class="tips"></span> </div>
</form>
<form action="" method="get">
<input class="text" id="test" name="" type="text">
<span id="test_tips" class="tips"></span><br>
<button type="submit">提交</button>
</form>
</div>
</body>
</html>
/* tangbin - http://www.planeArt.cn - MIT Licensed */
(function($){
// tipWrap: 提示消息的容器
// maxNumber: 最大输入字符
$.fn.artTxtCount = function(tipWrap, maxNumber){
var countClass = 'js_txtCount', // 定义内部容器的CSS类名
fullClass = 'js_txtFull', // 定义超出字符的CSS类名
disabledClass = 'disabled'; // 定义不可用提交按钮CSS类名 // 统计字数
var count = function(){
var btn = $(this).closest('form').find(':submit'),
val = $(this).val().length, // 是否禁用提交按钮
disabled = {
on: function(){
btn.removeAttr('disabled').removeClass(disabledClass);
},
off: function(){
btn.attr('disabled', 'disabled').addClass(disabledClass);
}
}; if (val == 0) disabled.off();
if(val <= maxNumber){
if (val > 0) disabled.on();
tipWrap.html('<span class="' + countClass + '">\u8FD8\u80FD\u8F93\u5165 <strong>' + (maxNumber - val) + '</strong> \u4E2A\u5B57</span>');
}else{
disabled.off();
tipWrap.html('<span class="' + countClass + ' ' + fullClass + '">\u5DF2\u7ECF\u8D85\u51FA <strong>' + (val - maxNumber) + '</strong> \u4E2A\u5B57</span>');
};
};
$(this).bind('keyup change', count); return this;
};
})(jQuery);