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我已經在html中創建了一個表單,我必須使用JavaScript驗證它.First Name和Father的名字不應該超過20個字符,所以我已經爲它們放置了檢查,但是他們在工作。這是我的代碼在JavaScript中的表單驗證(事件處理)
<html>
<head>
<script type="text/javascript">
function validate()
{
var firstName=document.f1.firname.value;
var fatherName=document.f1.fname.value;
var address=document.f1.add.value;
var phoneNumber=document.f1.ph.value;
var cnic=document.f1.cnic.value;
var email=document.f1.email.value;
var cgpa=document.f1.fname.value;
var sem=document.f1.sem.value;
var id=document.f1.cid.value;
if(firstName.length>20)
{
alert("Value can't exceed 20");
}
if(fatherName.length>20)
{
alert("Value can't exceed 20");
}
}
</script>
</head>
<body>
<form name="f1">
Name : <input type="text",name="firname"> <br>
Father's Name: <input type="text",name="fname"> <br>
Address: <input type="text",name="add"> <br>
Phone No.:<input type="text",name="ph"> <br>
CNIC:<input type="text",name="cnic"> <br>
Email:<input type="text",name="email"> <br>
City :<br> <input type="radio" name="city" value="lhr"> Lahore <br>
<input type="radio" name="city" value="karachi"> Karachi <br>
<input type="radio" name="city" value="isl"> Islamabad <br>
<select name="country">
<option value="pakistan">Pakistan</option>
<option value="india">India</option>
<option value="china">China</option>
</select> <br>
Cgpa:<input type="text",name="cgpa"> <br>
Department:<input type="text",name="dpt"> <br>
<select name="degree">
<option value="se">SE</option>
<option value="cs">CS</option>
<option value="it">IT</option>
</select> <br>
Semester:<input type="text",name="sem"> <br>
CollegeId:<input type="text",name="cid"> <br>
<input type="Submit", value="Submit" ,onsubmit="validate()">
</form>
</body>
什麼似乎是問題?
不應該有分離在HTML屬性,這''應'<輸入類型的任何逗號= 「提交」值=「提交」onsubmit =「驗證()」> – MichaelJames
警報彈出仍然沒有出現.. – Ahmed