Jquery到javascript keypress事件

Question

我在jquery代码中有以下内容:

$(document).keypress(function (e) {
    if (e.keyCode == 13) {

    }
});

我如何将其变成javascript所以我不需要加载jquery everyime？

Answer 1

document.onkeypress = function (e) {
    if (!e) var e = window.event;
    var keyCode = e.keyCode || e.which;
    if(keyCode == 13) {

    }
    ...
}

读:

• http://www.quirksmode.org/js/introevents.html