Menu
In my form I want to allow typing of integer values only in a textbox. How to do that?
562
By default, HTML 5 input field has attribute type=”number” that is used to get input in numeric format. Now forcing input field type=”text” to accept numeric values only by using Javascript or jQuery. You can also set type=”tel” attribute in the input field that will popup numeric keyboard on mobile devices.
In our webpage with the definition of textbox we can add an onkeypress event for accepting only numbers. It will not show any message but it will prevent you from wrong input. It worked for me, user could not enter anything except number.
You can use RegularExpressionValidator for this. below is the sample code:
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" ControlToValidate="TextBox1" runat="server" ErrorMessage="Only Numbers allowed" ValidationExpression="\d+"> </asp:RegularExpressionValidator> above TextBox only allowed integer to be entered because in RegularExpressionValidator has field called ValidationExpression, which validate the TextBox. However, you can modify as per your requirement.
You can see more example in MVC and Jquery here.
136
<HTML> <HEAD> <SCRIPT language=Javascript> function isNumberKey(evt) { var charCode = (evt.which) ? evt.which : evt.keyCode; if (charCode > 31 && (charCode < 48 || charCode > 57)) return false; return true; } </SCRIPT> </HEAD> <BODY> <INPUT id="txtChar" onkeypress="return isNumberKey(event)" type="text" name="txtChar"> </BODY> </HTML> If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
