Restrict user to enter numeric value in textbox using javascript

Due to some reasons (like don’t allow to enter chars in Price TextBox), we restrict users to enter chars in TextBox. We can implement this functionality by using below method. To learn more about handling such cases and other JavaScript techniques, you can enroll in a Free Online JavaScript Course and enhance your skills!

 <script type="text/javascript">
 function checkNumeric(event) {
var kCode = event.keyCode || event.charCode; // for cross browser check

//FF and Safari use e.charCode, while IE use e.keyCode that returns the ASCII value 
if ((kCode > 57 || kCode < 48) && (kCode != 46 && kCode != 45)) {
//code for IE
 if (window.ActiveXObject) {
 event.keyCode = 0
 return false;
 }
else
{
 event.charCode= 0
}
 }
}
</script>

<asp:TextBox ID="TextBox1" runat="server" onkeypress="return checkNumeric(event); ></asp:TextBox> 

Read More: 50+ Javascript Interview Questions and Answers

Read More: Javascript Developer Salary in India

Take our Javascript skill challenge to evaluate yourself!

In less than 5 minutes, with our skill challenge, you can identify your knowledge gaps and strengths in a given skill.

GET FREE CHALLENGE