js表单提交enter触发提交

<div><label for="username">用户名：</label><input type="text" id="username" value="123"></div><div><label for="password">密 码：</label><input type="password" id="password" value="123"></div><button id="sousou">提交</button>

var e =e|| window.event;document.onkeydown = function(e){if ((e.keyCode || e.which) == 13){var data={username:$("#username").val(),password:$("#password").val()}console.log(data);}}