阻止回车提交

 $("#addClassName").keydown(function(e) {
        if (e.keyCode == 13) {
            e.stopPropagation(); //阻止事件冒泡
            e.preventDefault();
        }     
        }).keyup(function(e) {
            if (e.keyCode == 13) {
                $("#addClassBtn").click();
            }
        });

转载于:https://www.cnblogs.com/jianshao810/archive/2010/06/29/1767316.html