利用javascript判斷前端密碼輸入是否一致

來源:互聯網
上載者:User

 

 

<!--判斷使用者輸入的兩次密碼是否相等-->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"/>
<meta http-equiv="x-ua-compatible" content="ie=7"/>
<title>標題:密碼檢查</title>
<meta name="description" content="描述:密碼檢查"/>
<meta name="keywords" content="關鍵字:密碼"/>
</head>

<script type="text/javascript">
function Check() {
var passwd1=document.my_form.pwd1.value;
var passwd2=document.my_form.pwd2.value;

if (passwd1 =="") {
document.my_form.explain1.innerText="密碼空,請輸入";
document.my_form.explain2.innerText="";
return;
}
if (passwd1 != passwd2) {
document.my_form.explain1.innerText="";
document.my_form.explain2.innerText="密碼不一致,請重輸入";
document.my_form.pwd1.innerText="";
document.my_form.pwd2.innerText="";
} else {
document.my_form.explain1.innerText="";
document.my_form.explain2.innerText="";
}
}
</script>

<form name="my_form">
<table width="900" cellpadding="3">
<tr>
<td align="right" width="200">使用者密碼:</td>
<td width="200">&nbsp;<input type="password" name="pwd1"/></td>
<td width="500"><input width=500 type="text" style= "color: red; border-style: solid; border-width:0" name="explain1" readonly/></td>
</tr>
<tr>
<td align="right" width="200">確認密碼:</td>
<td width="200">&nbsp;<input type="password" name="pwd2" onBlur="Check()"/></td>
<td width="500"><input width=500 type="text" style= "color: red; border-style: solid; border-width:0" name="explain2" readonly/></td>
</tr>
</table>
</form>
</html>
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