拥有一个属于自己的javascript表单验证插件

.failvalid{ border: solid 2px red !important;}

/*** 验证插件*/SimpoValidate = { //验证规则 rules: { int: /^[1-9]/d*$/, number: /^[+-]?/d*/.?/d+$/ }, //初始化 init: function () { $("span[class*='valid']").each(function () { //遍历span var validSpan = $(this); var to = validSpan.attr("to"); var target; if (to) { target = $("input[name='" + to + "'],select[name='" + to + "'],textarea[name='" + to + "']"); } else { var target = validSpan.prev(); } if (target) { target.blur(function () {  SimpoValidate.validOne(target, validSpan); }); } }); }, //验证全部，验证成功返回true valid: function () { var bl = true; $("span[class*='valid']").each(function () { //遍历span var validSpan = $(this); var to = validSpan.attr("to"); var target; if (to) { target = $("input[name='" + to + "'],select[name='" + to + "'],textarea[name='" + to + "']"); } else { target = validSpan.prev(); } if (target) { if (!SimpoValidate.validOne(target, validSpan)) {  bl = false; } } }); return bl; }, //单个验证，验证成功返回true validOne: function (target, validSpan) { SimpoValidate.removehilight(target, msg); var rule = SimpoValidate.getRule(validSpan); var msg = validSpan.attr("msg"); var nullable = validSpan.attr("class").indexOf("nullable") == -1 ? false : true; //是否可为空 var to = validSpan.attr("to"); if (target) { //checkbox或radio if (target[0].tagName.toLowerCase() == "input" && target.attr("type") && (target.attr("type").toLowerCase() == "checkbox" || target.attr("type").toLowerCase() == "radio")) { var checkedInput = $("input[name='" + to + "']:checked"); if (!nullable) {  if (checkedInput.length == 0) {  SimpoValidate.hilight(target, msg);  return false;  } } } //input或select if (target[0].tagName.toLowerCase() == "input" || target[0].tagName.toLowerCase() == "select") { var val = target.val(); if (!nullable) {  if ($.trim(val) == "") {  SimpoValidate.hilight(target, msg);  return false;  } } else {  if ($.trim(val) == "") {  SimpoValidate.removehilight(target, msg);  return true;  } } if (rule) {  var reg = new RegExp(rule);  if (!reg.test(val)) {  SimpoValidate.hilight(target, msg);  return false;  } } } else if (target[0].tagName.toLowerCase() == "textarea") { var val = target.text(); if (!nullable) {  if ($.trim(val) == "") {  SimpoValidate.hilight(target, msg);  return false;  } } else {  if ($.trim(val) == "") {  SimpoValidate.removehilight(target, msg);  return true;  } } if (rule) {  var reg = new RegExp(rule);  if (!reg.test(val)) {  SimpoValidate.hilight(target, msg);  return false;  } } } } return true; }, //获取验证规则 getRule: function (validSpan) { var rule = validSpan.attr("rule"); switch ($.trim(rule)) { case "int": return this.rules.int; case "number": return this.rules.number; default: return rule; break; } }, //红边框及错误提示 hilight: function (target, msg) { target.addClass("failvalid"); target.bind("mouseover", function (e) { SimpoValidate.tips(target, msg, e); }); target.bind("mouseout", function () { SimpoValidate.removetips(); }); }, //取消红边框及错误提示 removehilight: function (target) { target.unbind("mouseover"); target.unbind("mouseout"); target.removeClass("failvalid"); SimpoValidate.removetips(); }, //显示提示 tips: function (target, text, e) { var divtipsstyle = "position: absolute; left: 0; top: 0; background-color: #dceaf2; padding: 3px; border: solid 1px #6dbde4; visibility: hidden; line-height:20px; "; $("body").append("<div class='div-tips' style='" + divtipsstyle + "'>" + text + "</div>"); var divtips = $(".div-tips"); divtips.css("visibility", "visible"); var top = e.clientY + $(window).scrollTop() - divtips.height() - 18; var left = e.clientX; divtips.css("top", top); divtips.css("left", left); $(target).mousemove(function (e) { var top = e.clientY + $(window).scrollTop() - divtips.height() - 18; var left = e.clientX; divtips.css("top", top); divtips.css("left", left); }); }, //移除提示 removetips: function () { $(".div-tips").remove(); }};$(function () { SimpoValidate.init();});

<link type="text/css" href="~/Scripts/SimpoValidate.css" rel="stylesheet" /><script type="text/javascript" src="~/Scripts/jquery-1.8.2.js"></script><script type="text/javascript" src="~/Scripts/ValidateUtil.js"></script>

<table class="table-test" cellpadding="0" cellspacing="0" style="border-collapse: collapse; width: 100%;"> <tr> <td> <input name="c" value="" type="text" /> <span class="valid nullable" rule="int" msg="可为空，请填写正整数"></span> </td> </tr> <tr> <td> <input name="d" value="" type="text" /> <span class="valid" rule="number" msg="必填，请填写数字"></span> </td> </tr> <tr> <td> <select> <option value="-1">==请选择==</option> <option value="1">是</option> <option value="2">否</option> </select> <span class="valid" rule="^(?!-1$).+$" msg="必选"></span> </td> </tr> <tr> <td> <input name="a" value="1" type="checkbox" /> <span>多</span> <input name="a" value="2" type="checkbox" /> <span>少</span> <span class="valid" rule="" msg="必选" to="a"></span> </td> </tr> <tr> <td> <input name="b" value="1" type="radio" /> <span>狗</span> <input name="b" value="2" type="radio" /> <span>猫</span> <span class="valid" rule="" msg="必选" to="b"></span> </td> </tr> <tr> <td> <textarea cols="20" rows="5" style="height: 50px; width: 300px;"></textarea> <span class="valid nullable" rule="^(.|/n){5,100}$" msg="可为空，长度必须大于等于5小于等于100"></span> </td> </tr></table>

//保存数据function save() { if (SimpoValidate.valid()) { //执行验证 $("#frm").submit(); //提交表单 }}