Javascript validation enter only numbers

Question

Dear guys How to validate text box enter only numbers in key press event text box only allow digits. send me client side validation coding.

Senthilkumar · Answer

Hi Place this function in your script tag. function validate() { var ddlCountry = document.getElementById(' '); if(ddlCountry.value==0) { alert(Not Selected..!); ddlParameter.focus(); return false; } return true; } If it is selected other than default value then it will not throw error other wise it will show the error. You can see the server side validation also: http://www.ezineasp.net/post/ASP-Net-DropDownList-Validation-using-JavaScript.aspx

selvi subramanian · Answer

hi senthil i need javascript validation for dropdownlist in asp.net

Senthilkumar · Answer

Please see the code: Place the control: Place the script in header tag: // function to only allow numeric key presses in a textbox // this doesn't stop pasting of non numeric values function numeric_only( e ) { // deal with unicode character sets var unicode = e.charCode ? e.charCode : e.keyCode; // if the key is backspace tab or numeric if( unicode == 8 || unicode == 9 || ( unicode >= 48 && unicode { // we allow the key press return true; } else { // otherwise we don't return false; } }