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48× 385× 385× 321× 64× 64× 48× 1× 1× 1× 1× 3× 1× 2× 1× 1× 1× 1× 1× 1× 1× 4× 4× 2× 4× 4× 4× 1× 3× 4× 1× 2× 2× 1× 2× 4× 7× 7× 3× 4× 2× 1× 4× 4× 4× 6× 4× 6× 4× 1× 4× 4× 1× 3× 3× 7× 4× 4× 1× 3× 3× 9× 6× 3× 3× 1× 1× 2× 4× 1× 15× 4× 15× 15× 1× 14× 15× 1× 5× 5× 5× 5× 5× 1× 4× 1× 3× 3× 5× 1× 1× 1× 1× 1× 7× 7× 7× 7× 7× 1× 9× 9× 9× 9× 9× 4× 4× 5× 1× 4× 4× 9× 1× 6× 6× 6× 1× 100× 100× 100× 100× 100× 1× 416× 221× 195× 195× 93× 93× 24× 102× 23× 23× 23× 23× 20× 20× 20× 3× 3× 23× 7× 79× 46× 118× 1× 29× 1× 28× 1× 21× 8× 13× 13× 27× 27× 10× 27× 27× 13× 3× 10× 1× 100× 100× 875× 875× 187× 187× 688× 688× 688× 1× 100× 100× 875× 875× 187× 688× 331× 331× 357× 333× 329× 329× 329× 4× 353× 353× 225× 1× 688× 688× 688× 333× 333× 333× 355× 355× 13× 13× 355× 355× 355× 355× 24× 355× 355× 355× 491× 491× 491× 491× 6× 6× 485× 485× 355× 1× 491× 491× 491× 716× 716× 491× 225× 491× 491× 4516× 4516× 486× 4030× 491× 491× 1× 491× 6× 485× 485× 485× 485× 2× 483× 483× 483× 483× 483× 2953× 2953× 483× 2470× 483× 483× 1× 311× 311× 311× 311× 3640× 3421× 219× 4× 4× 215× 105× 215× 311× 311× 311× 311× 311× 1× 49× 49× 49× 49× 6638× 6000× 638× 325× 72× 325× 638× 313× 313× 49× 1× 49× 1× 45× 1× 44× 44× 44× 49× 49× 49× 49× 49× 454× 454× 17× 17× 454× 49× 49× 49× 44× 1× 114× 3× 111× 468× 1× | /** * PickerJS * * @file HTML分析工具 * @author Brian Li(lbxxlht@163.com) * 主要工作将HTML文本建立成虚拟DOM，然后提供一些与jQuery中类似的操作接口 * HTML语法比较灵活，有很多自闭和标签影响解析，本工具属于轻量级模板操作工具，建议使用XHTML规范 */ var define = typeof define === 'function' && define.amd ? define : function (factory) { typeof module === 'object' ? (module.exports = factory(require)) : ''; }; define(function (require) { /** * 构造函数 * * @constructor * @param {string | Array.<string>} arr XHTML串或数组 */ function Picker(arr) { var source = []; if (typeof arr === 'string') { source = this._html2array(arr); } else if (arr instanceof Array) { source = this._html2array(arr.join('')); } else { arr = ''; } this._init(source); } /** * 导出操作结果，并刷新所有内部结构 * * @param {boolean} dontUpdate 是否不刷新原始数据 * @return {Array.<string>} 模板数组 */ Picker.prototype.export = function (dontUpdate) { var result = []; var remove = -1; for (var i = 0; i < this._treesource.length; i++) { if (i <= remove) { continue; } var dom = this._treesource[i]; if (dom == null) { result.push(this._datasource[i]); continue; } if (dom._removed) { remove = dom._end; continue; } Iif (dom._removeInner) { result = result.concat(this._dom2str(dom)); remove = dom._end - 1; continue; } result = result.concat(this._dom2str(dom)); } Eif (!dontUpdate) { this._init(result); } return result; }; /** * 获取操作集中制定元素 * * @param {number} i 元素索引 * @return {?Object} 操作集中的虚拟dom，如果没有返回null */ Picker.prototype.at = function (i) { if (isNaN(i) || i < 0 || i > this._operatesource.length) { return null; } return this._operatesource[i]; }; /** * 遍历操作空间里的所有dom并执行回调 * 此方法支持链式操作 * * @param {Function} callback 针对每个DOM的要做的回调 * @return {Object} Picker实例 */ Picker.prototype.each = function (callback) { this._each(this._operatesource, callback); return this; }; /** * 筛选器接口 * 此接口支持链式操作 * * @param {string} filters 筛选器序列，此序列将被由右向左解析 * @return {Object} Picker实例，筛选器结果保存在_operatesource中 */ Picker.prototype.find = function (filters) { this._operatesource = []; var group = this._filters2array(filters); if (group == null || group.length === 0) { return this; } // 分组筛选 var finalResult = []; var me = this; while (group.length > 0) { filters = group.shift(); var result = this._treesource; var lastProcessor = filterDOM; while (filters.length > 0) { var item = filters[0]; if (item === '>') { lastProcessor = filterFather; filters.shift(); continue; } if (item === ' ') { lastProcessor = filterAncestors; filters.shift(); continue; } result = lastProcessor(item, result); filters.shift(); } finalResult = finalResult.concat(result); } // 过滤去重 var nonRepeat = []; var hash = {}; for (var i = 0; i < finalResult.length; i++) { var obj = finalResult[i]; if (hash[obj._index] === true) { continue; } hash[obj._index] = true; nonRepeat.push(obj); } // 保存结果，返回操作链 this._operatesource = nonRepeat; return this; /** * 从optArr数组中筛选出祖先符合条件的DOM * 本操作结束后，会刷新optArr中所有对象的_workspace为原先的ancestors * * @param {string} filter 筛选条件 * @param {Array.<Object>} optArr 操作集 * @return {Array.<Object>} 本轮筛选完毕的结果集 */ function filterAncestors(filter, optArr) { if (optArr.length === 0) { return []; } var result = []; me._each(optArr, function (dom) { var workspace = dom._workspace; var newspace = []; for (var j = 0; j < workspace.length; j++) { var item = me._ancestors(filter, workspace[j]); if (item == null) { return; } newspace = newspace.concat(item); } Eif (newspace.length > 0) { dom._workspace = newspace; result.push(dom); } }); return result; } /** * 从optArr数组中筛选出父级符合条件的DOM * 本操作结束后，会刷新optArr中所有对象的_workspace为原先的father * * @param {string} filter 筛选条件 * @param {Array.<Object>} optArr 操作集 * @return {Array.<Object>} 本轮筛选完毕的结果集 */ function filterFather(filter, optArr) { if (optArr.length === 0) { return []; } var result = []; me._each(optArr, function (dom) { var workspace = dom._workspace; var newspace = []; for (var j = 0; j < workspace.length; j++) { var item = me._father(filter, workspace[j]); if (item == null) { return; } newspace.push(item[0]); } Eif (newspace.length > 0) { dom._workspace = newspace; result.push(dom); } }); return result; } /** * 筛选出原始符合条件的DOM * * @param {string} filter 本轮筛选条件 * @param {Array.<Object>} optArr 操作集 * @return {Array.<Object>} 本轮筛选完毕的结果集 */ function filterDOM(filter, optArr) { if (optArr.length === 0) { return []; } var result = []; me._each(optArr, function (dom) { var item = me._filter(filter, dom); if (item == null) { return; } item[0]._workspace = [item[0]]; result.push(item[0]); }); return result; } }; /** * 过滤当前操作集 * 此接口支持链式操作 * * @param {string} filter 过滤条件 * @return {Object} Picker实例，筛选器结果保存在_operatesource中 */ Picker.prototype.filter = function (filter) { var result = []; var me = this; this._each(this._operatesource, function (dom) { if (me._filter(filter, dom) == null) { return; } result.push(dom); }); this._operatesource = result; return this; }; /** * 删除DOM * 此接口支持链式操作 * * @return {Object} Picker实例，筛选器结果保存在_operatesource中 */ Picker.prototype.remove = function () { this._each(this._operatesource, function (dom) { dom._removed = true; }); return this; }; /** * 增加属性 * 此接口支持链式操作 * * @param {string | Object} key 属性键值或属性hash * @param {?string} value 属性值，如果key为hash此参数将被忽略、 * @return {Object} Picker实例对象 */ Picker.prototype.attr = function (key, value) { var atts = typeof key === 'object' ? key : {}; if (typeof key === 'string') { atts[key] = value + ''; } this._each(this._operatesource, function (dom) { for (var key in atts) { if (!atts.hasOwnProperty(key) || key.indexOf('_') === 0) { continue; } dom[key] = atts[key] + ''; } }); return this; }; /** * 删除属性 * 此接口支持链式操作 * * @param {string | Array.<string>} key 属性键（组） * @return {Object} Picker实例对象 */ Picker.prototype.removeAttr = function (key) { var keys = (key instanceof Array) ? key : []; if (typeof key === 'string') { keys.push(key); } this._each(this._operatesource, function (dom) { for (var i = 0; i < keys.length; i++) { key = keys[i]; if (key.indexOf('_') === 0 || !dom.hasOwnProperty(key)) { continue; } delete dom[key]; } }); return this; }; /** * 添加类 * 此接口支持链式操作 * * @param {Array.<string> | string} className 类名称（数组） * @return {Object} Picker实例对象 */ Picker.prototype.addClass = function (className) { Eif (typeof className === 'string') { className = [className]; } this._each(this._operatesource, function (dom) { if (!dom.hasOwnProperty('class') || !(dom.class instanceof Array)) { dom.class = []; } dom.class = dom.class.concat(className); }); return this; }; /** * 移除类 * 此接口支持链式操作 * * @param {Array.<string> | string} className 类名称（数组） * @return {Object} Picker实例对象 */ Picker.prototype.removeClass = function (className) { var remove = {}; if (typeof className === 'string') { remove[className] = true; } else Eif (className instanceof Array) { for (var i = 0; i < className.length; i++) { remove[className[i]] = true; } } this._each(this._operatesource, function (dom) { if (!dom.hasOwnProperty('class') || !(dom.class instanceof Array)) { return; } var result = []; for (var j = 0; j < dom.class.length; j++) { if (remove[dom.class[j]]) { continue; } result.push(dom.class[j]); } if (result.length === 0) { delete dom.class; return; } dom.class = result; }); return this; }; /** * DOM头部插入内容（与before的区别是before在外面，head在里面） * 此接口支持链式操作 * * @param {string | Array.<string>} content 待插入的内容 * @return {Object} Picker实例对象 */ Picker.prototype.head = function (content) { if (!(content instanceof Array)) { content = [String(content)]; } this._each(this._operatesource, function (dom) { if (dom._pos === 'single') { return; } dom._suff = dom._suff.concat(content); }); return this; }; /** * DOM尾部插入内容 * * @param {string | Array.<string>} content 待插入的内容 * @return {Object} Picker实例对象 */ Picker.prototype.foot = function (content) { Eif (!(content instanceof Array)) { content = [String(content)]; } var me = this; this._each(this._operatesource, function (dom) { if (dom._pos === 'single') { return; } if (dom._end < 0 || dom._end >= me._treesource.length) { return; } dom = me._treesource[dom._end]; dom._pref = dom._pref.concat(content); }); return this; }; /** * DOM内包内容 * 此接口支持链式操作 * * @param {string | Array.<string>} contentBefore DOM前插入的内容 * @param {string | Array.<string>} contentAfter DOM后插入的内容 * @return {Object} Picker实例对象 */ Picker.prototype.wrapinner = function (contentBefore, contentAfter) { this.head(contentBefore); this.foot(contentAfter); return this; }; /** * DOM前插入内容 * 此接口支持链式操作 * * @param {string | Array.<string>} content 待插入的内容 * @return {Object} Picker实例对象 */ Picker.prototype.before = function (content) { Eif (!(content instanceof Array)) { content = [String(content)]; } this._each(this._operatesource, function (dom) { dom._pref = dom._pref.concat(content); }); return this; }; /** * DOM后插内容 * 此接口支持链式操作 * * @param {string | Array.<string>} content 待插入的内容 * @return {Object} Picker实例对象 */ Picker.prototype.after = function (content) { Eif (!(content instanceof Array)) { content = [String(content)]; } var me = this; this._each(this._operatesource, function (dom) { if (dom._pos === 'single') { dom._suff = dom._suff.concat(content); return; } if (dom._end < 0 || dom._end >= me._treesource.length) { return; } dom = me._treesource[dom._end]; dom._suff = dom._suff.concat(content); }); return this; }; /** * DOM外包内容 * 此接口支持链式操作 * * @param {string | Array.<string>} contentBefore DOM前插入的内容 * @param {string | Array.<string>} contentAfter DOM后插入的内容 * @return {Object} Picker实例对象 */ Picker.prototype.wrap = function (contentBefore, contentAfter) { this.before(contentBefore); this.after(contentAfter); return this; }; // /////////////////以下为私有方法，但也对外提供接口，不提倡外部调用/////////////////////// /** * 初始化 * * @param {Array.<string>} source 原始模板数组 */ Picker.prototype._init = function (source) { this._datasource = source; this._treesource = []; this._operatesource = []; this._produceDomArray(); this._produceDomTree(); }; /** * dom是否符合条件 * * @param {string} filter 筛选条件 * @param {Object} dom 虚拟dom对象 * @return {Array.<DOM> | null} 如果dom符合filter条件，则返回dom（封装成数组），否则返回null */ Picker.prototype._filter = function (filter, dom) { if (typeof filter !== 'string' || filter.length === 0 || dom == null || dom._pos === 'end') { return null; } filter = filter.trim(); // 类选择器 if (filter.charAt(0) === '.') { filter = filter.slice(1, filter.length); if (dom.class instanceof Array && dom.class.indexOf(filter) > -1) { return [dom]; } } // 属性选择器 else if (filter.charAt(0) === '[' && filter.charAt(filter.length - 1) === ']') { filter = filter.slice(1, filter.length - 1); var key = ''; var value = ''; if (filter.indexOf('=') > -1) { filter = filter.split('='); key = filter[0].trim(); value = filter[1].replace(/"/g, '').trim(); } else { key = filter.trim(); value = true; } if (dom.hasOwnProperty(key) && dom[key] === value) { return [dom]; } } // 标签选择器 else { /* eslint-disable */ if (dom._tagname === filter) { return [dom]; } } return null; }; /** * 检查DOM的父亲是否满足filter条件 * * @param {string} filter 过滤条件 * @param {Object} dom 虚拟dom * @param {Array.<DOM> | null} 如果父节点符合条件则返回父节点，否则返回null */ Picker.prototype._father = function (filter, dom) { if ( typeof filter !== 'string' || !dom || dom._parent == null || typeof dom._parent !== 'number' || dom._parent >= this._treesource.length || this._treesource[dom._parent] == null ) { return null; } return this._filter(filter, this._treesource[dom._parent]); }; /** * 检查DOM的祖先中是否有满足条件的DOM * * @param {string} filter 过滤条件 * @param {Object} dom 虚拟dom * @return {Array.<DOM> | null} 返回DOM祖先链中所有符合条件的DOM，一个都没有就返回null */ Picker.prototype._ancestors = function (filter, dom) { if ( typeof filter !== 'string' || !dom || dom._parent == null || typeof dom._parent !== 'number' || dom._parent >= this._treesource.length || this._treesource[dom._parent] == null ) { return null; } var result = []; while (dom._parent != null) { var is = this._father(filter, dom); if (is != null) { result = result.concat(is); } Iif ( dom._parent == null || typeof dom._parent !== 'number' || dom._parent >= this._treesource.length || this._treesource[dom._parent] == null ) { break; } dom = this._treesource[dom._parent]; } if (result.length === 0) { return null; } return result; }; /** * 将根据源数组生成DOM数组 */ Picker.prototype._produceDomArray = function () { this._treesource = []; for (var n = 0; n < this._datasource.length; n++) { var item = this._datasource[n]; if ( item.length < 3 || item.charAt(0) !== '<' || item.charAt(item.length - 1) !== '>' || item.indexOf('<!') === 0 ) { this._treesource[n] = null; continue; } var dom = this._str2dom(item); dom._index = n; this._treesource[n] = dom; } }; /** * 根据数组生成虚拟DOM树 */ Picker.prototype._produceDomTree = function () { var arr = []; for (var n = 0; n < this._treesource.length; n++) { var item = this._treesource[n]; if (item == null) { continue; } if (item._pos === 'begin') { arr.push(item); continue; } if (item._pos === 'end' && arr.length > 0) { if (item._tagname === arr[arr.length - 1]._tagname) { var endIndex = item._index; item = arr.pop(); item._end = endIndex; } else { continue; } } item._parent = arr.length > 0 ? arr[arr.length - 1]._index : null; if (arr.length > 0) { arr[arr.length - 1]._children.push(item._index); } } }; /** * 将DOM的左标签转成对象 * * @param {string} str dom元素的前标签 * @return {Object} 包含标签信息的对象 */ Picker.prototype._str2dom = function (str) { /* eslint-disable */ var obj = { _tagname: '', // DOM名称，对应tagName _pos: 'begin', // 该节点在DOM中的位置，begin头，end尾，single该DOM自封闭 _parent: null, // DOM的父亲的索引 _children: [], // 该DOM所有孩子的索引 _end: -1, // 该节点对应的封口节点的索引 _index: -1, // 该DOM头节点的索引 _workspace: null, // 判断DOM祖先是否符合条件时，“上一轮”通过筛选的祖先存在这里 _pref: [], // 该节点的前缀 _suff: [], // 该节点的后缀 _removed: false, // 是否已删除 _removeInner: false // 是否删除节点内部所有元素，为true时，导出的内容不包含节点原始内部，但包含节点的head和foot }; var autoCloseTag = ';area;base;basefont;br;embed;hr;img;input;keygen;link;meta;param;track;'; if (str.charAt(1) === '/') { obj._pos = 'end'; obj._tagname = str.replace('</', '').replace('>', '').toLowerCase(); return obj; } var length = str.length - 2; if (str.charAt(str.length - 2) === '/') { obj._pos = 'single'; length--; } str = str.substr(1, length); var arr = str.split(' '); obj._tagname = arr.shift().toLowerCase(); if (autoCloseTag.indexOf(';' + obj._tagname + ';') > -1) { obj._pos = 'single'; } str = arr.join(' '); var index = 0; while (index < str.length) { var key = findKey(str, index); Iif (key == null) { break; } var value = findValue(str, key.index); if (value == null) { obj[key.key] = true; break; } else { obj[key.key] = key.key === 'class' ? value.value.split(' ') : value.value; index = value.index; } } return obj; /** * 从字符串中找到key * * @param {string} str 待分析的串 * @param {number} index 索引开始 * @return {Object} 结果对象，{key: '', index: 0} */ function findKey(str, index) { Iif (index >= str.length) { return null; } var begin = index; while (begin < str.length) { var code = str.charCodeAt(begin); if (code >=97 && code <= 122) { break; } begin++; } var end = begin; while (end < str.length) { var code = str.charCodeAt(end); if ((code < 97 || code > 122) && code !== 45) { break; } end++; } var key = end > begin ? str.substr(begin, end - begin) : null; return { key: key, index: end + 1 }; } /** * 从字符串中过滤value * * @param {string} str 待分析串 * @param {number} index 索引开始 * @return {Object} 结果对象，{value:'', index: 0} */ function findValue(str, index) { if (index >= str.length) { return null; } var begin = index; while (begin < str.length) { var code = str.charCodeAt(begin); if (code >=97 && code <= 122) { return {value: true, index: begin}; } begin++; Eif (code === 34) { break; } } var end = begin + 1; while (end < str.length) { var char = str.charAt(end); if (char === '"') { break; } end++; } var value = end > begin ? str.substr(begin, end - begin) : null; return { value: value, index: end + 1 } } }; /** * 将DOM对象转成字符串 * * @param {Object} dom dom对象 * @return {Array.<string>} 增加了前缀加后缀的节点 */ Picker.prototype._dom2str = function (dom) { Iif (!dom) { return []; } var result = dom._pos === 'end' ? '</' : '<'; result += dom._tagname; for (var key in dom) { if (!dom.hasOwnProperty(key) || key.indexOf('_') === 0) { continue; } if (dom[key] === true) { result += ' ' + key; continue; } else if (key === 'class' && dom.class instanceof Array) { dom.class = dom.class.join(' '); } result += ' ' + key + '="' + dom[key] + '"'; } result += dom._pos === 'single' ? '/>' : '>'; var resultArr = dom._pref; resultArr.push(result); resultArr = resultArr.concat(dom._suff); return resultArr; }; /** * 将html字符串分解成数组 * 左标签一行，右标签一行，标签内容一行，自封闭标签一行 * * @param {string} str html字符串 * @return {Array.<string>} 分割好的html数组 */ Picker.prototype._html2array = function (str) { str = str.replace(/\r|\n/g, ''); var result = []; var begin = 0; for (var n = 0; n < str.length; n++) { if (str.charAt(n) !== '<' && str.charAt(n) !== '>') { continue; } if (str.charAt(n) === '<') { if (n > begin) { result.push(str.substr(begin, n - begin)); } begin = n; } if (str.charAt(n) === '>') { result.push(str.substr(begin, n - begin + 1)); begin = n + 1; } } if (n > begin) { result.push(str.substr(begin, n - begin)); } return result; }; /** * 将filters从右向左分割成操作符与filter间隔的队列 * 返回的队列如果长度大于1，则奇数索引元素必为操作符 * * @param {string} filters 过滤条件队列 * @return {?Array.<Array.<string>>} 分解好的队列，第一维按照逗号分割，第二维按照大于号和空格分割 */ Picker.prototype._filters2array = function (filters) { if (typeof filters !== 'string' || filters.length === 0) { return null; } var finalResult = []; var level1 = filters.split(','); while (level1.length > 0) { var filter = level1.shift().trim(); var tmp = filter.split(/>| /); var result = []; var i = filter.length; while (i > -1) { var char = filter.charAt(i); if (char === ',' || char === '>' || char === ' ') { result.push(tmp.pop()); result.push(char); } i--; } Eif (tmp.length > 0) { result = result.concat(tmp); } finalResult.push(result); } return finalResult; }; /** * 批量操作数组元素 * * @param {Array} arr 数组 * @param {Function} callback 针对每个元素的回调 */ Picker.prototype._each = function (arr, callback) { if (arr.length === 0 || typeof callback !== 'function') { return; } for (var i = 0; i < arr.length; i++) { callback(arr[i]); } }; return Picker; }); |