layui 表单提交为什么有两次-木庄网络博客

本文摘自PHP中文网，作者angryTom，侵删。

(1) 一般用layui导致提交两次，会想到的是在绑定on sumit的时候没有return false，导致没有把常规提交方式拦截下来，再次访问了action

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form.on('submit(formDemo)', function (data) {
            var fd = new FormData($('form')[0]);
            $.ajax({
                type: "POST",
                url: '/admin/adduser.do',
                data: fd,
                async: false,
                cache: false,
                contentType: false,
                processData: false,
                success: function (res) {
                    if (res.status == 200) {
                        layer.msg(res.msg, {time: 2000});
                         var url = "/admin/views/users.html"; // 跳转
                         setTimeout(function () {
                             window.location.href = url
                         },2000);
                    } else {
                        layer.msg(res.msg, {time: 2000});
                    }
                }
            });
            return false; // 这段很关键
        });