jQuery - keydown/keypress/keyup ENTERKEY 检测？

Question

尝试让 jQuery 检测 Enter 输入，但检测到空格和其他键，未检测到 Enter。下面有什么问题:

$("#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/

Answer 1

JavaScript/jQuery

$("#entersomething").keyup(function(e){ 
    var code = e.key; // recommended to use e.key, it's normalized across devices and languages
    if(code==="Enter") e.preventDefault();
    if(code===" " || code==="Enter" || code===","|| code===";"){
        $("#displaysomething").html($(this).val());
    } // missing closing if brace
});

HTML

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