verjs是一款原生js代码编写的表单验证插件，提供了常用的10种表单验证方式，包括身份证号码验证、手机电话号码、电子邮箱验证、必填字段验证、正则自定义验证、多次对比验证、最大值/最小值验证……
html代码：
verJs
VerJs.js里面的代码：
window.VerJs = (function () {
var ver = function () {
this.form;
this.messages = {
required: "当前选项不能为空！",
min: 0,
max: 0,
minlength: 0,
maxlength: 0,
rule: "",
equal: "",
mobile: "请输入有效的手机号码",
email: "请输入规则的电子邮箱",
idcard: "请输入有效的身份证号码"
};
this.func = {
required: this.data_required,
min: this.data_min_value,
max: this.data_max_value,
minlength: this.data_min_length,
maxlength: this.data_max_length,
rule: this.data_rule,
equal: this.data_equal,
mobile: this.data_mobile,
email: this.data_email,
idcard: this.data_id_card
};
this.change;
this.error = function (errorMessage, target) {
this.clear_error(target);
target.classList.add("ver-error-input");
var errorTag = document.createElement("span");
errorTag.className = "ver-errors";
var iconCarets = document.createElement("i");
iconCarets.className = "verJsFont ver-icon-carets ver-error-caret";
errorTag.appendChild(iconCarets);
var iconInfo = document.createElement("i");
iconInfo.className = "verJsFont icon-info-o";
errorTag.appendChild(iconInfo);
var span = document.createElement("span");
span.innerText = errorMessage;
errorTag.appendChild(span);
this.insertAfter(errorTag, target);
};
this.insertAfter = function (newElement, targentElement) {
var parent = targentElement.parentNode;
if (parent.lastChild == targentElement) {
parent.appendChild(newElement);
} else {
parent.insertBefore(newElement, targentElement.nextSibling);
}
};
this.styles = function () {
var css = document.createElement("link"),
icon = document.createElement("link");
css.href = "asset/need/common.css?v=1.0.2&$_=" + Math.random();
icon.href = "asset/need/vericon.css?v=1.0.2&$_=" + Math.random();
css.rel = icon.rel = "stylesheet";
css.type = icon.type = "text/css";
var link = document.getElementsByTagName("head")[0];
link.appendChild(css);
link.appendChild(icon);
};
this.success = function (data) {
alert("提交成功！")
}
this.fail = function (data) {
alert("提交失败！");
}
};
ver.prototype = {
init: function (params) {
var _self = this;
this.styles();
this.form = document.querySelector(params.form);
if (!this.form) this.form = document.querySelector("form");
this.change = params.change ? params.change : "default";
this._sef_data(params.data, params.message);
this.form.onsubmit = function () {
return _self.submit();
};
if (params.success) {
this.success = params.success;
}
if (params.fail) {
this.fail = params.fail;
}
},
submit: function () {
this.verification();
var error = this.form.querySelectorAll(".ver-error-input").length;
if (error > 0) {
this.form.querySelector(".ver-error-input").focus();
return false;
}
var form = this.form.getAttribute("data-form");
if (form == "ajax") {
this.ajax();
return false;
}
return true;
},
_sef_data: function (data, message) {
var _self = this;
if (data) {
for (var i in data) {
var names = document.getElementsByName(i);
names.forEach(function (item) {
for (var j in data[i]) {
var messages = message && message[i] && message[i][j] ? message[i][j] : _self.messages[j];
if (j != "min" && j != "max" && j != "minlength" && j != "maxlength" && j != "rule" && j != "equal") {
item.setAttribute("data-" + j, messages);
} else if (j == "rule") {
item.setAttribute("data-rule", data[i][j]);
item.setAttribute("data-rule-message", messages);
} else {
item.setAttribute("data-" + j, data[i][j]);
}
}
})
}
}
//判断标记中是否有data验证的数据标记
for (var i in this.messages) {
var names = this.form.querySelectorAll("[data-" + i + "]");
names.forEach(function (items) {
var val = items.getAttribute("data-" + i);
if (val == "true" || val == "false") {
items.setAttribute("data-" + i, _self.messages[i]);
}
items.onblur = function () {
_self.query(this);
};
items.change = function () {
_self.query(this);
};
items.onfocus = function () {
_self.clear_error(this);
};
if (_self.change == "keyup") {
items.onkeyup = function () {
_self.query(this);
}
}
})
}
},
verification: function () {
var _self = this;
for (var i in this.func) {
var names = this.form.querySelectorAll("[data-" + i + "]");
if (names.length > 0) {
names.forEach(function (items) {
_self.func[i](items, _self);
})
}
}
},
query: function (objects) {
for (var i in this.func) {
if (objects.getAttribute("data-" + i)) {
this.func[i](objects, this);
}
}
},
clear_error: function (objects) {
var parent = objects.parentNode,
errorTag = parent.querySelector(".ver-errors");
if (errorTag) {
parent.removeChild(errorTag);
}
objects.classList.remove("ver-error-input");
},
data_required: function (objects, _self) {
var value = objects.value,
errorMessage = objects.getAttribute("data-required");
if (value == '' || value == null) {
_self.error(errorMessage, objects);
return false;
}
return true;
},
data_min_value: function (objects, _self) {
var value = (objects.value),
min = parseInt(objects.getAttribute("data-min"));
if (value) {
value == parseInt(value);
if (isNaN(value) || min > value) {
_self.error("最小值为：" + min, objects);
return false;
}
}
return true;
},
data_max_value: function (objects, _self) {
var value = (objects.value),
min = parseInt(objects.getAttribute("data-max"));
if (value) {
value = parseInt(value);
if (isNaN(value) || min < value) {
_self.error("最大值为：" + min, objects);
return false;
}
}
return true;
},
data_min_length: function (objects, _self) {
var value = objects.value.length,
min = parseInt(objects.getAttribute("data-minlength"));
if (value < min) {
_self.error("最少输入" + min + "个字符", objects);
return false;
}
return true;
},
data_max_length: function (objects, _self) {
var value = objects.value.length,
min = parseInt(objects.getAttribute("data-maxlength"));
if (value > min) {
_self.error("最多输入" + min + "个字符", objects);
return false;
}
return true;
},
data_rule: function (objects, _self) {
var value = objects.value,
rule = objects.getAttribute("data-rule"),
errorMessage = objects.getAttribute("data-rule-message");
if (!errorMessage) errorMessage = "格式错误!";
rule = new RegExp(rule);
if (value) {
if (!rule.test(value)) {
_self.error(errorMessage, objects);
return false;
}
}
return true;
},
data_equal: function (objects, _self) {
var value = objects.value,
equal = document.querySelector(objects.getAttribute("data-equal")).value,
errorMessage = "两次输入内容不一致";
if (value != equal) {
_self.error(errorMessage, objects);
return false;
}
return true;
},
data_mobile: function (object, _self) {
var value = object.value,
rule_tel = /^(0\d{2,3}\d{7,8}|0\d{2,3}-)\d{7,8}$/,
rule_phone = /^(13[0-9]|14[579]|15[0-3,5-9]|16[6]|17[0135678]|18[0-9]|19[89])\d{8}$/,
errorMessage = object.getAttribute("data-mobile");
if (value && !rule_phone.test(value) && !rule_tel.test(value)) {
_self.error(errorMessage, object);
return false;
}
return true;
},
data_email: function (object, _self) {
var value = object.value,
rule_email = /^([0-9A-Za-z\-_\.]+)@([0-9a-z]+\.[a-z]{2,3}(\.[a-z]{2})?)$/g,
errorMessage = object.getAttribute("data-email");
if (value && !rule_email.test(value)) {
_self.error(errorMessage, object);
return false;
}
return true;
},
data_id_card: function (object, _self) {
var value = object.value,
rule_email = /^([1-9]\d{5}[1]\d{3}(0[1-9]|1[0-2])(0[1-9]|[1-2]\d|3[0-1])\d{3}[0-9xX]|[1-9]\d{5}\d{2}(0[1-9]|1[0-2])(0[1-9]|[1-2]\d|3[0-1])\d{3})$/,
errorMessage = object.getAttribute("data-idcard");
if (value && !rule_email.test(value)) {
_self.error(errorMessage, object);
return false;
}
return true;
},
ajax: function () {
var _self = this;
var data = this.formData();
var xhr = new XMLHttpRequest();
xhr.open(this.form.method, this.form.action, true);
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.onreadystatechange = function () {
if (xhr.readyState == 4) {
if (xhr.status == 200 || xhr.status == 304) {
_self.success(xhr.responseText);
} else {
_self.fail(xhr.responseText);
}
}
};
xhr.send(data);
},
formData: function () {
var ele = [],
inputs = this.form.querySelectorAll("input"),
select = this.form.querySelectorAll("select"),
text = this.form.querySelectorAll("textarea");
if (inputs.length > 0) {
inputs.forEach(function (items) {
// ele.push(items);
var type = items.type.toLowerCase(),
value = "";
if (type !== 'checkbox' && type != "radio") {
value = items.name + "=" + items.value;
} else {
if (items.checked) {
value = items.name + "=" + items.value;
}
}
if (value) {
ele.push(value);
}
});
}
if (select.length > 0) {
select.forEach(function (items) {
ele.push(items.name + "=" + items.value);
})
}
if (text.length > 0) {
text.forEach(function (items) {
ele.push(items.name + "=" + items.value);
})
}
return encodeURI(ele.join("&"));
}
};
return ver;
})();