本文實例講述了jQuery實現統計輸入文字個數的方法。分享給大家供大家參考。具體如下：
jQuery統計輸入文字個數可以使用在統計回復字數，標題字數長度提示，增加友好度提高用戶體驗。代碼如下：
復制代碼代碼如下:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery統計文字個數</title>
<script type="text/javascript" src="js/jquery.js"></script>
</head>
<body>
<ul>
<li>
<span>新聞標題:</span>
<span><input id="news_title" name="news_title" type="text" size="60" onkeyup="title_len();" onclick="title_len();" maxlength="80"/>
<span id="titlelen">0/80</span>
</li>
</ul>
</body>
<script language="javascript" type="text/javascript">
function title_len(){
var value = $('#news_title').val().length;
if(value == 80){
var string = "<span style=/"color:#FF0000/">"+value+"/80</span>";
}else{
var string = "<span style=/"color:#FF0000/">"+value+"</span>/80";
}
$('#titlelen').html(string);
}
</script>
</html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery統計文字個數</title>
<script type="text/javascript" src="js/jquery.js"></script>
</head>
<body>
<ul>
<li>
<span>新聞標題:</span>
<span><input id="news_title" name="news_title" type="text" size="60" onkeyup="title_len();" onclick="title_len();" maxlength="80"/>
<span id="titlelen">0/80</span>
</li>
</ul>
</body>
<script language="javascript" type="text/javascript">
function title_len(){
var value = $('#news_title').val().length;
if(value == 80){
var string = "<span style=/"color:#FF0000/">"+value+"/80</span>";
}else{
var string = "<span style=/"color:#FF0000/">"+value+"</span>/80";
}
$('#titlelen').html(string);
}
</script>
</html>
希望本文所述對大家的jQuery程序設計有所幫助。
