jQuery-keydown/keypress/keyup ENTERKEY检测? [英] jQuery - keydown / keypress /keyup ENTERKEY detection?

问题描述

试图让jQuery检测Enter输入，但是检测到空格和其他键，但未检测到enter.以下是什么问题:

Trying to get jQuery to detect enter input, but space and other keys are detected, enter isn't detected. What's wrong below:

$("#entersomething").keyup(function(e) {
    alert("up");
    var code = (e.keyCode ? e.keyCode : e.which);
    if (code==13) {
        e.preventDefault();
    }

    if (code == 32 || code == 13 || code == 188 || code == 186) {
        $("#displaysomething").html($(this).val());
});

<input id="entersomething" />
<div id="displaysomething"&gt;&lt;/div&gt;

http://jsfiddle.net/zeRrv/

推荐答案

JavaScript/jQuery

JavaScript/jQuery

$("#entersomething").keyup(function(e){ 
    var code = e.which; // recommended to use e.which, it's normalized across browsers
    if(code==13)e.preventDefault();
    if(code==32||code==13||code==188||code==186){
        $("#displaysomething").html($(this).val());
    } // missing closing if brace
});

HTML

<input id="entersomething" type="text" /> <!-- put a type attribute in -->
<div id="displaysomething"></div>

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