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159 lines
4.3 KiB
159 lines
4.3 KiB
/**
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* 表单插件，使用方法：
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* var myform = layui.Form('formId');
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* myform.setData({...})
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*
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* var data = myform.getData();
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*
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* var name = myform.getData('name')
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*/
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layui.define(function (exports) {
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/**
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* form = new Form('formId');
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* @param formId
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* @constructor
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*/
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var Form = function (formId) {
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this.$form = $('#' + formId);
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this.parseForm(this.$form);
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}
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Form.prototype = {
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fire: function (eventName, data) {
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var handler = this['on' + eventName];
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handler && handler(data);
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}
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, opt: function (attr) {
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return this[attr];
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}
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/**
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* @private
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*/
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, parseForm: function ($form) {
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var that = this;
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this.form = $form[0];
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}
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, getEls: function () {
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return this.$form.find('input,select,textarea');
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}
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/**
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* 同load(data)
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*/
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, setData: function (data) {
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this.loadData(data);
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}
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/**
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* @private
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*/
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, loadData: function (data) {
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this.reset();
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for (var name in data) {
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var val = data[name];
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var $el = this.$form.find('[name="' + name + '"]');
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$el.each(function () {
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var _$el = $(this);
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if (_$el.is(':radio') || _$el.is(':checkbox')) {
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_$el.prop('checked', false);
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var elVal = _$el.val();
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if ($.isArray(val)) {
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for (var i = 0, len = val.length; i < len; i++) {
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if (elVal == val[i]) {
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_$el.prop('checked', true);
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}
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}
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} else {
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_$el.prop('checked', elVal == val);
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}
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} else {
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_$el.val(val);
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}
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});
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}
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}
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/**
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* 清除表单中的值,清除错误信息
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*/
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, clear: function () {
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this.getEls().each(function () {
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var _$el = $(this);
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if (_$el.is(':radio') || _$el.is(':checkbox')) {
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this.checked = false;
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} else {
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this.value = '';
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}
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var msg = _$el.data('msg');
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if (msg) {
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msg.text('');
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}
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});
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}
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/**
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* 重置表单
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*/
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, reset: function () {
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var form = this.form;
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if (form && form.reset) {
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form.reset();
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} else {
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this.clear();
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}
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}
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/**
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* 获取表单数据,如果有fieldName参数则返回表单对应的值<br>
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* var id = form.getData('id') 等同于 var id = form.getData().id;
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* @param {String} fieldName
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* @return {Object} 返回JSON对象,如果有fieldName参数,则返回对应的值
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*/
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, getData: function (fieldName) {
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var that = this;
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var data = {};
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this.getEls().each(function () {
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var value = that._getInputVal($(this));
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if (value) {
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var name = this.name;
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var dataValue = data[name];
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if (dataValue) {
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if ($.isArray(dataValue)) {
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dataValue.push(value);
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} else {
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data[name] = [dataValue, value];
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}
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} else {
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data[name] = value;
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}
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}
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});
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if (typeof fieldName === 'string') {
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return data[fieldName];
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}
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return data;
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}
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, _getInputVal: function ($input) {
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if ($input.is(":radio") || $input.is(":checkbox")) {
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if ($input.is(':checked')) {
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return $input.val();
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}
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} else {
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return $input.val();
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}
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}
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}
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exports('Form', function (formId) {
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return new Form(formId);
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});
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}); |