如何使用jQuery检测何时按下回车键？

Question

I am trying to detect what key is pressed and based on that I want to fire click() event.

My code work for all the key except for the enter.

for some reason when I press "enter" I do not get any messages on the screen as if the enter button was not pressed.

Here is my code

    $(function(){
        $(document).keypress(function(e) {
            handleKeyPress(e);
        });

        function handleKeyPress( e ){

            var key = e.which;

            alert(key);

            if( getIcwsTabIndex() != 1){
                return;
            }

            if( key >= 48 && key <= 57){
                var k = key - 48;
                $('#icwsDialerNumber' + k).click();
            }

            if( key == 8){
                e.preventDefault();
                $('#icwsDialerScreenDel').click();

            }

            if( key == 13){
                e.preventDefault();
                $('#icwsDialerNumberDial').click();
            }
        }
    });

what am I doing wrong here?

Answer 1

tested your code, it works on chrome besides the not defined getIcwsTabIndex

so verify it is ok on your side

here is a fiddle check the console

 $(function(){
        $(document).keypress(function(e) {
            handleKeyPress(e);
        });

        function handleKeyPress( e ){

            var key = e.which;
            console.log(key);


    //            if( getIcwsTabIndex() != 1){
    //                return;
    //            }

            if( key >= 48 && key <= 57){
                var k = key - 48;

                $('#icwsDialerNumber' + k).click();
            }

            if( key == 8){
                e.preventDefault();
                $('#icwsDialerScreenDel').click();

            }

            if( key == 13){
                e.preventDefault();
                console.log(key);
                $('#icwsDialerNumberDial').click();
            }
        }
    });

Answer 2

The problem with your code is that is not cross-browser. It should be:

var key = e.charCode || e.keyCode || 0;