本文實例講述了JavaScript對表格或元素按文本，數字或日期排序的方法。分享給大家供大家參考。具體實現方法如下：
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 // Sorting table columns correctly by text, number or date. There are other // versions, plugins, etc., for this but they either are restricted to specific // date formats, or require EVERY row-element to be given a sort attribute; mine // can handle many different date and number formats, and even allows for specific // cells that may not conform to the overall date/number format for that column. // My version also enables sorting of element hierarchies: such as a DIV containing // P-paragraphs and SPANs - this could even be an image-gallery containing prices // or dates within spans. Very efficient as well!! // Example: andrew.dx.am/sortgallerydel.html // AddSortToTables(); will make the table headers clickable, to sort columns in // ascending or descending order, for any tables with class="sortIt". // SortTable(tbl, col); will sort the table (tbl is an id or table object) by // the supplied column index (indexed from 0) in ascending or descending order. // AddSortByDate(tbl, col, dateMask); enables sorting of a column by date, // specified by a date-mask such as 'dd-mmm-yy'. // AddSortByNumber(tbl, col); enables sorting of a column by number. This assumes a // period . as the decimal separator (if present); it ignores any other non-numeric // characters. // SortElements(parentEl, childTag, colTag, colIndex); will sort (non-table) // elements in ascending or descending order. For example, an UL containing LIs // and SPANs. colIndex specifies which span to sort; there may be more than one in // the LI (0 indexed). // Example: SortElements('divid', 'p', 'span', 2); // 3rd span within each paragraph. // // AddSortByDate2(parentEl, childTag, colTag, colIndex, dateMask); and // AddSortByNumber2(parentEl, childTag, colTag, colIndex) // provide the same feature-set as AddSortByDate and AddSortByNumber does // for tables, but for element hierarchies. // If there are dates or numbers in a column (or element) which don't meet the // date-mask or number formatting necessary to sort correctly, then these individual // elements can be given the attribute "sort" and they will still sort correctly! // For example, with a date column <td sort="2012/12/20"> will still sort a // cell correctly. (This format 'YYYY/MM/DD' will be converted into a Date() object.) var MonthNames = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]; var DayNames = [ "Sunday", "Monday", "Tueday", "Wednesday", "Thursday", "Friday", "Saturday" ]; var ShortMths = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; var ShortDays = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]; var AddEvent = function (elem, eventType, func) { // Helper function. if ( elem.addEventListener ) AddEvent = function (elem, eventType, func) { elem.addEventListener(eventType, func, false); }; else if ( elem.attachEvent ) AddEvent = function (elem, eventType, func) { elem.attachEvent('on' + eventType, func); }; else AddEvent = function (elem, eventType, func) { elem['on' + eventType] = func; }; AddEvent(elem, eventType, func); }; // Sort methods/algorithms attributed: var SortTable = function (tbl, col) { // could be called directly SortElements(tbl, 'tr', 'td', col); }; var SortElements = function (parentEl, childTag, colTag, colIndex) { // example use: SortElements('table1','tr','td',2) // or SortElements('list1','li') // or SortElements('divName','p','span',3) var i, j, cTags = {}, startAt = 0, childLen, aChild, elem, sortBy, content, elems = [], sortedLen, frag, hdrsLen, hdr; var parent = (typeof parentEl === 'string') ? document.getElementById(parentEl) : parentEl; var AscText = function (a, b) { // sort() by .data as text var x = a.data, y = b.data, xNum = parseFloat(x), yNum = parseFloat(y); // check if each begin with a number.. if ( !isNaN(xNum) && !isNaN(yNum) && (xNum - yNum) ) return xNum - yNum; return ((x < y) ? -1 : ((x > y) ? 1 : 0)); }; var DescText = function (a, b) { // sort() by .data var x = a.data, y = b.data, xNum = parseFloat(x), yNum = parseFloat(y); // check if each begin with a number.. if ( !isNaN(xNum) && !isNaN(yNum) && (yNum - xNum) ) return yNum - xNum; return ((x > y) ? -1 : ((x < y) ? 1 : 0)); }; var AscNum = function (a, b) { // used with dates as well return a.data - b.data; }; var DescNum = function (a, b) { return b.data - a.data; }; if (parent.nodeName.toLowerCase() == 'table') { if ( childTag == 'tr' ) { sortBy = parent.rows[0].cells[colIndex].sortBy || 'text'; } parent = parent.tBodies[0] || parent; if ( parent.rows[0].cells[0].nodeName.toLowerCase() == 'th' ) { startAt = 1; } } cTags = parent.getElementsByTagName(childTag); if ( typeof colIndex == 'undefined' ) { sortBy = 'text'; // sort simple lists or paragraphs as text } for (i = startAt, childLen = cTags.length; i < childLen; i++) { // ..go forward examining each child aChild = cTags[i]; elem = (colTag) ? aChild.getElementsByTagName(colTag)[colIndex] : aChild; if (elem) { if ( !sortBy ) { // sorting non-table columns.. sortBy = (typeof elem.numberValue != 'undefined') ? 'number' : ((typeof elem.dateValue != 'undefined') ? 'date' : 'text'); } switch (sortBy) { // You can supply 'sort' attributes to enable sorting of numbers, etc. // For example, <td sort='2011/02/12'> for a date. case 'text': content = (elem.getAttribute('sort') || elem.firstChild.nodeValue).toLowerCase(); break; case 'number': content = elem.numberValue; break; case 'date': content = elem.dateValue; break; default: content = (elem.getAttribute('sort') || elem.firstChild.nodeValue).toLowerCase(); break; } j = elems.length; if ( !aChild.id ) aChild.id = 'tempSortID' + j; elems[j] = { data: content, tempID: aChild.id }; } } // The following will determine if the table/etc has already been sorted // by the same column or tag. If so, it will sort in ascending or descending // order. It creates custom element properties to the parent element to // remember the previous sort details. if ( typeof colIndex == 'undefined' ) colIndex = 0; if ( parent.prevTag && parent.prevTag == ((typeof colTag == 'undefined') ? childTag : colTag) ) { if (parent.prevCol == colIndex) { // sorting by the same column as previously parent.prevSort = (parent.prevSort == 'asc') ? 'desc' : 'asc'; } else { // sorting by any other column parent.prevCol = colIndex; parent.prevSort = 'asc'; } } else { // sorting for the 1st time or by a different tag parent.prevTag = ((typeof colTag == 'undefined') ? childTag : colTag); parent.prevCol = colIndex; parent.prevSort = 'asc'; } if ( parent.prevSort === 'desc' ) { // 'desc' WILL BE the previous sort order.. switch (sortBy) { case 'text': elems.sort(DescText); break; case 'number': elems.sort(DescNum); break; case 'date': elems.sort(DescNum); break; default: elems.sort(DescText); break; } } else { switch (sortBy) { case 'text': elems.sort(AscText); break; case 'number': elems.sort(AscNum); break; case 'date': elems.sort(AscNum); break; default: elems.sort(AscText); break; } } frag = document.createDocumentFragment(); for (i = 0, sortedLen = elems.length; i < sortedLen; i++) { elem = document.getElementById(elems[i].tempID); frag.appendChild(elem); if ( (elem.id).substr(0,10) == 'tempSortID' ) elem.removeAttribute('id'); } parent.appendChild(frag); elems = null; return parent.prevSort; // not currently used }; var AddSortToTables = function () { // ..if table has class-name 'sortIt' var tables = document.getElementsByTagName('table'), i, j, tblLen, tbl, hdrs, hdrsLen; function PreserveSortScope(a,b,c,d) { return function () { // assign the SortElements fn. to a table header SortElements(a, b, c, d); } } // add sorting to table headers for ( i = 0, tblLen = tables.length; i < tblLen; i++ ) { tbl = tables[i]; if ( tbl.className.indexOf('sortIt') + 1) { hdrs = tbl.getElementsByTagName('th'); if ( hdrs ) { for ( j = 0, hdrsLen = hdrs.length; j < hdrsLen; j++ ) { AddEvent(hdrs[j],'click',PreserveSortScope(tbl,'tr','td',j)); // if there's no title already, add "Click to sort" if ( !hdrs[j].title ) hdrs[j].setAttribute('title', 'Click to sort'); } } } } }; var AddSortByDate = function (tbl, col, dateMask) { // Input: the table name (or object), a column index (or array) // and a date mask ('dd-mmm-yy') // Adds a sortBy = 'date' property to the first row // will ignore the first row, assuming it is a header row var i, rLen, cell; while ( col.length ) AddSortByDate(tbl,col.pop(),dateMask); if ((col instanceof Array) || isNaN(col)) return; var tbl = (typeof tbl === 'string') ? document.getElementById(tbl) : tbl; tbl.rows[0].cells[col].sortBy = 'date'; AddSortByDate2(tbl, 'tr', 'td', col, dateMask); }; var AddSortByDate2 = function (parentEl, childTag, colTag, colIndex, dateMask) { var kids, startAt = 0, i, rLen, cell; var parent = (typeof parentEl === 'string') ? document.getElementById(parentEl) : parentEl; if ( parent.nodeName.toLowerCase() == 'table' ) { parent = parent.tBodies[0] || parent; startAt = ( parent.rows[0].cells[0].nodeName.toLowerCase() == 'th' ) * 1; } kids = parent.getElementsByTagName(childTag); for ( i = startAt, rLen = kids.length; i < rLen; i++) { cell = kids[i].getElementsByTagName(colTag)[colIndex]; if (cell) { if ( typeof cell.numberValue != 'undefined' ) delete cell.numberValue; // the above enables switching from a number to a date sort // (although v. unlikely) if (cell.getAttribute('sort')) { // use sort attribute if present cell.dateValue = new Date(cell.getAttribute('sort')); } else { cell.dateValue = new Date(StringToDate(cell.firstChild.nodeValue, dateMask)); } if (cell.dateValue.toString() == "NaN" || cell.dateValue.toString() == "Invalid Date") { cell.dateValue = 0; } } } }; var AddSortByNumber = function (tbl, col) { // col is a column index or array of indices // will ignore the first row, assuming it is a header row var i, rLen, cell, tempNum; while ( col.length ) AddSortByNumber(tbl,col.pop()); if ((col instanceof Array) || isNaN(col)) return; tbl = (typeof tbl === 'string') ? document.getElementById(tbl) : tbl; tbl.rows[0].cells[col].sortBy = 'number'; AddSortByNumber2(tbl,'tr','td',col); }; var AddSortByNumber2 = function (parentEl, childTag, colTag, colIndex) { var kids, startAt = 0, i, rLen, cell, tempNum; var parent = (typeof parentEl === 'string') ? document.getElementById(parentEl) : parentEl; if ( parent.nodeName.toLowerCase() == 'table' ) { parent = parent.tBodies[0] || parent; startAt = (parent.rows[0].cells[0].nodeName.toLowerCase() == 'th') * 1; } kids = parent.getElementsByTagName(childTag); for (i = startAt, rLen = kids.length; i < rLen; i++) { cell = kids[i].getElementsByTagName(colTag)[colIndex]; if (cell) { if ( typeof cell.dateValue != 'undefined' ) delete cell.dateValue; // the above enables switching from a date to a number sort // (although v. unlikely) tempNum = cell.getAttribute('sort') || cell.firstChild.nodeValue; tempNum = tempNum.replace(/[^0-9.-]/g, ''); cell.numberValue = parseFloat(tempNum); if (isNaN(cell.numberValue)) cell.numberValue = 0.0; } } }; var StringToDate = function (sDate, sFormat, cutOff) { // Input: a date value as a string, it's format as a string e.g. 'dd-mmm-yy' // Optional: a cutoff (integer) for 2 digit years. // If no 'd' appears in the format string then the 1st of the month is assumed. // If the year is 20 and the cut-off is 30 then the value will be converted // to 2020; if the year is 40 then this will be converted to 1940. // If no cut-off is supplied then '20' will be pre-pended to the year (YY). // Output: a string in the format 'YYYY/MM/DD' or '' // Will not attempt to convert certain combinations e.g. DMM, MDD, DDM, YYYYD. var sParsed, fndSingle; // sParsed will be constructed in the format 'YYYY/MM/DD' sDate = sDate.toString().toUpperCase(); sFormat = sFormat.toUpperCase(); if (sFormat.search(/MMMM|MMM/) + 1) { // replace Mar/March with 03, etc. sDate = sDate.replace(new RegExp('(' + ShortMths.join('|') + ')[A-Z]*', 'gi'), function (m) { var i = ShortMths.indexOf(m.charAt(0).toUpperCase() + m.substr(1, 2).toLowerCase()) + 1; return ((i < 10) ? "0" + i : "" + i).toString(); }); sFormat = sFormat.replace(/MMMM|MMM/g, 'MM'); } if (sFormat.search(/DDDD|DDD/) + 1) { // replace Tue/Tuesday, etc. with '' sDate = sDate.replace(new RegExp('(' + ShortDays.join('|') + ')[A-Z]*', 'gi'),''); sFormat = sFormat.replace(/DDDD|DDD/g, ''); } sDate = sDate.replace(/(^|D)(d)(?=D|$)/g, function($0, $1, $2) { // single digits 2 with 02 return $1 + '0' + $2; }); sFormat = sFormat.replace(/(^|[^DMY])(D|M)(?=[^DMY]|$)/g, function($0, $1, $2){ return $1 + $2 + $2; // replace D or M with DD and MM }); // are there still single Ds or Ms? fndSingle = sFormat.search(/(^|[^D])D([^D]|$)|(^|[^M])M([^M]|$)/)+1; if ( fndSingle ) return ''; // do not attempt to parse, for example, 'DMM' sFormat = sFormat.replace(/(^|[^Y])(YY)(?=[^Y]|$)/g, function($0, $1, $2, index) { var tempDate = sDate.substr(0, index + 1); tempDate += (cutOff) ? ((parseInt(sDate.substr(index + 1, 2),10) > cutOff) ? '19' : '20') : '20'; tempDate += sDate.substr(index + 1); sDate = tempDate; return $1 + $2 + $2; }); sParsed = ('YYYY/MM/DD').replace(/YYYY|MM|DD/g, function(m){ return (sFormat.indexOf(m) + 1) ? sDate.substr(sFormat.indexOf(m), m.length) : ''; }); if (sParsed.charAt(0) == '/') { // if no year specified, assume the current year sParsed = (new Date().getFullYear()) + sParsed; } if (sParsed.charAt(sParsed.length - 1) == '/') { // if no date, assume the 1st of the month sParsed += '01'; } // should end up with 10 characters.. return ( sParsed.length == 10 ) ? sParsed : ''; };希望本文所述對大家的javascript程序設計有所幫助。