how to add validation expression in this code

Question

1.00/5 (1 vote)

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C#

var name, reg;
Name = document.getElementById("txt_name").value;
           regno = document.getElementById("txt_reg_no").value;
           if (Name == '' && regno == '') {
               alert("Enter All Fields");
               return false;
           }
           if (Name == '') {
               alert("Please Enter Name");
               return false;
           }
           if (regno == '') {
               alert("Please Enter Reg. no ");
               return false;
           }

here i want result like
1. field name sholud accept only characters
2. field two accept only characters and numbers.

i want such a kind of validation expression

plz help me

Posted 19-Jun-14 18:46pm

sanjaysgh

Updated 19-Jun-14 19:01pm

v2

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Comments

Sergey Alexandrovich Kryukov 20-Jun-14 0:53am

Not clear. It all depends on what you want to achieve, what to validate, to what criteria...
—SA

_Asif_ 20-Jun-14 0:59am

What do you mean by Validation Expression?

Namith Krishnan E 20-Jun-14 1:06am

Are u using asp.net?

sanjaysgh 20-Jun-14 1:18am

yes

2 solutions

Solution 2

U can use regular expression validator in ASP.NET for this

Posted 19-Jun-14 20:57pm

Namith Krishnan E

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DamithSL · Accepted Answer · 2014-06-19T19:28:00

Solution 1

try with RegExp

JavaScript

var reg1 = new RegExp('^[a-zA-Z]+$');
if (!reg1.test(Name)) {
    alert("Invalid Name");
    return false;
}

var reg2 = new RegExp('^[a-zA-Z0-9]+$');
if (!reg2.test(regno)) {
    alert("Invalid regno");
    return false;
}

DEMO[^]

Posted 19-Jun-14 19:28pm

DamithSL

Updated 19-Jun-14 19:39pm

v3