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javascriptvalidationasciifromcharcode

Block typing in any other alphabet than english

I know the JavaScript that restricts entering some special characters or number, etc using charcode and ascii value.

Is there anyway that I can block people entering any other language (I mean alphabet) expect English? More specifically how can I block people entering Chinese or some other non English alphabet name in the textbox and make them strictly enter only English alphabet name?

Thanks

Solution

  • I use this function to remove special characters from input

    function removeSpecials(evt) {
var input = document.getElementById("myinput");
var patt = /[^\u0000-\u007F ]+/;
setTimeout(function() {
     var value = input.value;
     input.value = value.replace(patt,"");
 },100);

    }

    The point is: I create a pattern to detect all special characters

    var patt = /[^\u0000-\u007F ]+/;;

    and I replace the input value

    value.replace(patt,"");

    Here is a FIDDLE