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一種
<INPUT onblur="if (value ==''){value='輸入文字'}"
onclick="if(this.value=='輸入文字')this.value=''" maxLength=40 size=16 value=輸入文字
name=ss_name>
另一種
此功能主要是給用戶在搜索輸入關(guān)鍵字的時(shí)候，給用戶一個(gè)友好的提示。很實(shí)用的代碼，主要是onclick(點(diǎn)擊)和onblur(失去焦點(diǎn))兩個(gè)事件.具體代碼如下：(注意：js代碼要放到頁(yè)面的最下面)
<html>
<head>
<meta http-equiv="Content-Type"
content="text/html; charset=gb2312" />
</head>
<body>
<form action="users.asp" method="post" name="so" id="so" style="margin:0
">
<input name="values" type="text" id="values" size="15"
maxlength="20" value="請(qǐng)輸入用戶名" style="color:#CCCCCC; ">
<input
type="submit" name="Submit2" value="提交">
<input name="flag"
type="hidden" id="flag" value="username">
</form>
</body>
</html>
<script language="JavaScript"
type="text/javascript">
function addListener(element,e,fn){
if(element.addEventListener){
element.addEventListener(e,fn,false);
} else {
element.attachEvent("on" + e,fn);
}
}
var values = document.getElementById("values");
addListener(values,"click",function(){
values.value = "";
})
addListener(values,"blur",function(){
if (values.value ==''){values.value
= "請(qǐng)輸入用戶名";}
})
</script>
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