$(".form_box h4").on("click", function() { var name = $(".name").val(); var email = $(".email").val(); var content = $(".content").val(); msgclick(name, email, content); }) function validate(str) {  const reg = /^[a-za-z0-9_-]+@[a-za-z0-9_-]+(\.[a-za-z0-9_-]+)+$/;  return reg.test(str) } function msgclick(name, email, content) { var data = { "name": name, "email": email, "content": content, }; var url = "/home/index/adddata"; if (name != "" && validate(email) && content != "") { $.ajax({ url: url, //请求的url地址 datatype: "json", //返回格式为json async: true, //请求是否异步,默认为异步,这也是ajax重要特性 data: data, //参数值 type: "post", //请求方式 success: function(reg) { console.log(reg); if (reg == '1') { $(".form_box input").val(""); $(".form_box textarea").val(""); alert("信息已提交,稍后会有工作人员与您联系"); } else { alert("请检查信息是否正确!!!"); } }, error: function(response) { console.log(response); } }); } else { alert("请检查信息是否正确!!!"); } }