Convert lowercase letter to upper case in javascript

Question

I have a code that will convert lower case letters to uppercase but it works only with IE and not in Crome or Firefox.

function ChangeToUpper()
  {         
         


        

Answer 1

separate javascript from your HTML

window.onload = function(){
        var textBx = document.getElementById ( "txt1" );

        textBx.onblur = function() {
            this.value = this.value.toUpperCase();
        };
    };

If the textbox is inside a naming container then use something like this

var textBx = document.getElementById ("<%= txt1.ClientID %>");

            textBx.onblur = function() {
                this.value = this.value.toUpperCase();
            };)