Form Validation in Java Script:
Form Validation in Java Script:
HTML 5 adds some attributes that allow form validation.
Example: the required attribute can be added to an input field to make it mandatory to fill in.
The form element has an onsubmit event that can be handled to perform validation.
<form onsubmit = “return validate()” method = “post”>
Number: <input type = “text” name = “num1″id = “num1″/>
<br/>
Repeat: <input type = “text” name=”num2″ id = “num2″/>
<br/>
<input type = “submit” value = “submit”/>
</form>
Validation with JavaScript:
function validate
var n1 = document.getElementById(“num1”);
var n2 = document.getElementById(“num2”);
if(n1.value != ” ” && n2.value != “”){
if(n1.value == n2.value){
return true;
}
}
alert(the values should be equal and not blank”);
return false;
}
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