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Backspace, Del, Arrow keys, Tab not working in Firefox when applying validation

  • 2 प्रत्युत्तर
  • 20
  • 1 view
  • के द्वारा अंतिम प्रतियुतर shitiz13

shitiz13
shitiz13
more options

Hi,

I am developing a webpage with some textboxes requiring only alphabets or alphanumeric text to be accepted. I am using DevExpress controls and following is the javascript code that executes on keypress

function fn_allowAlphabetspace(s, e) { 

           var theEvent = e.htmlEvent || window.event;
           var key = theEvent.keyCode || theEvent.which;

           debugger;
           key = String.fromCharCode(key);
           var regex = /[a-zA-Z ]/;

           if (!regex.test(key)) {
               theEvent.returnValue = false;
               if (theEvent.preventDefault)
                   theEvent.preventDefault();
           }
       }

All the browsers except firefox allow Backspace, Del, Tab, Arrow keys, Home, End key to work perfectly. Firefox does not allow any of these to work on the textboxes.

Thanks Shitiz

Hi, I am developing a webpage with some textboxes requiring only alphabets or alphanumeric text to be accepted. I am using DevExpress controls and following is the javascript code that executes on keypress function fn_allowAlphabetspace(s, e) { var theEvent = e.htmlEvent || window.event; var key = theEvent.keyCode || theEvent.which; debugger; key = String.fromCharCode(key); var regex = /[a-zA-Z ]/; if (!regex.test(key)) { theEvent.returnValue = false; if (theEvent.preventDefault) theEvent.preventDefault(); } } All the browsers except firefox allow Backspace, Del, Tab, Arrow keys, Home, End key to work perfectly. Firefox does not allow any of these to work on the textboxes. Thanks Shitiz

चुने गए समाधान

Hi,

I tried to solve it by debugging the javascript and found the below code to be working for firefox as well as on other browsers IE10, Chrome and Safari without any issues

//validation function to allow only alphabets and space 

       function fn_allowAlphabetspace(s, e) {
           var searchSpecial = '$Backspace$Del$Home$Tab$Left$Right$Up$Down$End$';
           if (searchSpecial.indexOf('$' + e.htmlEvent.key + '$') < 0) {
               var theEvent = e.htmlEvent || window.event;
               var key = theEvent.keyCode || theEvent.which;
               key = String.fromCharCode(key);
               var regex = /[a-zA-Z ]/;

               if (!regex.test(key)) {
                   theEvent.returnValue = false;
                   if (theEvent.preventDefault)
                       theEvent.preventDefault();
               }
           }
       }

Please not that parameter e passed in the function provide the details of the keypress function. I am using DevExpress ASPxTextBoxes. Anybody who wants to use this function need to make changes in the above code as per the control used

Thanks Shitiz

संदर्भ में यह जवाब पढ़ें 👍 0

All Replies (2)

shitiz13
shitiz13 प्रश्नकर्ता
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Forgot to mention, DevExpress is a third party tool that I am using.

shitiz13 द्वारा सम्पादित

shitiz13
shitiz13 प्रश्नकर्ता
more options

चयनित समाधान

Hi,

I tried to solve it by debugging the javascript and found the below code to be working for firefox as well as on other browsers IE10, Chrome and Safari without any issues

//validation function to allow only alphabets and space 

       function fn_allowAlphabetspace(s, e) {
           var searchSpecial = '$Backspace$Del$Home$Tab$Left$Right$Up$Down$End$';
           if (searchSpecial.indexOf('$' + e.htmlEvent.key + '$') < 0) {
               var theEvent = e.htmlEvent || window.event;
               var key = theEvent.keyCode || theEvent.which;
               key = String.fromCharCode(key);
               var regex = /[a-zA-Z ]/;

               if (!regex.test(key)) {
                   theEvent.returnValue = false;
                   if (theEvent.preventDefault)
                       theEvent.preventDefault();
               }
           }
       }

Please not that parameter e passed in the function provide the details of the keypress function. I am using DevExpress ASPxTextBoxes. Anybody who wants to use this function need to make changes in the above code as per the control used

Thanks Shitiz