JavaScript Validation code in asp.net .

Here I have  write some validation code in asp.net for  required field , range validator, email validator ,phone validator etc.

Below all codes are given :

Write this code in header :

<script>

    function val() {

        c = /^[a-zA-Z]*$/;

        if (document.getElementById("TextBox1").value.match(c) == null) {

            alert("please enter your uname and in proper formate.");

            return false;

        }

        if (document.getElementById("TextBox2").value == "") {

            alert("please enter your first name.");

            return false;

        }

        if (document.getElementById("TextBox3").value == "") {

            alert("please enter your last name.");

            return false;

        }

        if (document.getElementById("TextBox4").value == "") {

            alert("please inter your email id.");

            return false;

        }

        e = /^[a-z A-Z 0-9_\.\-]\+@(([a-z A-Z 0-9\-])+\.)+([a-z A-Z 0-9]{2,4})+$/;

        if (document.getElementById("TextBox4").value.match(e) == null) {

            alert("please inter your email id in proper formate.");

            return false;

        }

        if (document.getElementById("TextBox5").value == "") {

            alert("please enter your password");

            return false;

        }

        if (document.getElementById("TextBox6").value == "") {

            alert("please enter your cpass");

            return false;

        }

        if (document.getElementById("TextBox7").value == "") {

            alert("please enter your mobile no.");

            return false;

        }

        p = document.getElementById("TextBox7").value;

        if (isNaN(p)) {

            alert("please enter your mobile no in digit.");

            return false;

        }

        if (document.getElementById("TextBox7").value.length < 10) {

            alert("mobile no must be ten digit no.");

            return false;

        }

        if (document.getElementById("TextBox7").value.length > 10) {

            alert("mobile no must be ten digit no.");

            return false;

        }

        if (document.getElementById("TextBox8").value == "") {

            alert("please enter your date of birth.");

            return false;

        }

        if (document.getElementById("RadioButtonList1").value == "") {

            alert("please enter your cpass");

            return false;

        }

    }

</script>

After this you can call this function  on control where you want .

For example:

<asp:TextBox ID="TextBox1" runat="server" onkeyup="reurn val();"></asp:TextBox>

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