JS定义回车事件(实现代码)

$(function () {
            //定义回车事件
            if (document.addEventListener) {//如果是Firefox
                document.addEventListener("keypress", fireFoxHandler, true);
            }
            else {
                document.attachEvent("onkeypress", ieHandler);
            }

            function fireFoxHandler(evt) {
                if (evt.keyCode == 13) {
                    $("#btnLogin")[0].click();
                }
            }
            function ieHandler(evt) {
                if (evt.keyCode == 13) {
                    $("#btnLogin")[0].click();
                }
            }
        });

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