JavaScript实现表格排序

JavaScript实现表格排序

<SCRIPT LANGUAGE="JavaScript"> var dom = (document.getElementsByTagName) ? true : false; var ie5 = (document.getElementsByTagName && document.all) ? true : false; var arrowUp, arrowDown; if (ie5 || dom) initSortTable(); function initSortTable() { arrowUp = document.createElement("SPAN"); var tn = document.createTextNode("↑"); arrowUp.appendChild(tn); arrowUp.className = "arrow"; arrowDown = document.createElement("SPAN"); var tn = document.createTextNode("↓"); arrowDown.appendChild(tn); arrowDown.className = "arrow"; } function sortTable(tableNode, nCol, bDesc, sType) { var tBody = tableNode.tBodies[0]; var trs = tBody.rows; var trl= trs.length; var a = new Array(); for (var i = 0; i < trl; i++) { a[i] = trs[i]; } var start = new Date; window.status = "Sorting data..."; a.sort(compareByColumn(nCol,bDesc,sType)); window.status = "Sorting data done"; for (var i = 0; i < trl; i++) { tBody.appendChild(a[i]); window.status = "Updating row " + (i + 1) + " of " + trl + " (Time spent: " + (new Date - start) + "ms)"; } // check for onsort if (typeof tableNode.onsort == "string") tableNode.onsort = new Function("", tableNode.onsort); if (typeof tableNode.onsort == "function") tableNode.onsort(); } function CaseInsensitiveString(s) { return String(s).toUpperCase(); } function parseDate(s) { return Date.parse(s.replace(/\-/g, '/')); } function toNumber(s) { return Number(s.replace(/[^0-9\.]/g, "")); } function Percent(s) { return Number(s.replace("%", "")); } function compareByColumn(nCol, bDescending, sType) { var c = nCol; var d = bDescending; var fTypeCast = String; if (sType == "Number") fTypeCast = Number; else if (sType == "Date") fTypeCast = parseDate; else if (sType == "CaseInsensitiveString") fTypeCast = CaseInsensitiveString; else if (sType == "Percent") fTypeCast = Percent; return function (n1, n2) { if (fTypeCast(getInnerText(n1.cells[c])) < fTypeCast(getInnerText(n2.cells[c]))) return d ? -1 : +1; if (fTypeCast(getInnerText(n1.cells[c])) > fTypeCast(getInnerText(n2.cells[c]))) return d ? +1 : -1; return 0; }; } function sortColumnWithHold(e) { var el = ie5 ? e.srcElement : e.target; var table = getParent(el, "TABLE"); var oldCursor = table.style.cursor; var oldClick = table.onclick; table.style.cursor = "wait"; table.onclick = null; var fakeEvent = {srcElement : e.srcElement, target : e.target}; window.setTimeout(function () { sortColumn(fakeEvent); table.style.cursor = oldCursor; table.onclick = oldClick; }, 100); } function sortColumn(e) { var tmp = e.target ? e.target : e.srcElement; var tHeadParent = getParent(tmp, "THEAD"); var el = getParent(tmp, "TD"); if (tHeadParent == null) return; if (el != null) { var p = el.parentNode; var i; el._descending = !Boolean(el._descending); if (tHeadParent.arrow != null) { if (tHeadParent.arrow.parentNode != el) { tHeadParent.arrow.parentNode._descending = null; } tHeadParent.arrow.parentNode.removeChild(tHeadParent.arrow); } if (el._descending) tHeadParent.arrow = arrowUp.cloneNode(true); else tHeadParent.arrow = arrowDown.cloneNode(true); el.appendChild(tHeadParent.arrow); var cells = p.cells; var l = cells.length; for (i = 0; i < l; i++) { if (cells[i] == el) break; } var table = getParent(el, "TABLE"); sortTable(table,i,el._descending, el.getAttribute("type")); } } function getInnerText(el) { if (ie5) return el.innerText; var str = ""; var cs = el.childNodes; var l = cs.length; for (var i = 0; i < l; i++) { switch (cs[i].nodeType) { case 1: str += getInnerText(cs[i]); break; case 3: str += cs[i].nodeValue; break; } } return str; } function getParent(el, pTagName) { if (el == null) return null; else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase()) return el; else return getParent(el.parentNode, pTagName); } </SCRIPT>

使用实例：

<table cellspacing="0" onclick="sortColumn(event)"> <thead> <tr> <td style="width: 60px;" type="String">String</td> <td style="width: 60px;" type="CaseInsensitiveString" title="CaseInsensitiveString">String</td> <td style="width: 60px;" type="Number">Number</td> <td style="width: 60px;" type="Date">Date</td> </tr> </thead> <tbody> <tr> <td>apple</td> <td>Strawberry</td> <td style="text-align: right;" mce_style="text-align: right;">45</td> <td>2001-03-13</td> </tr> <tr> <td>Banana</td> <td>orange</td> <td style="text-align: right;" mce_style="text-align: right;">7698</td> <td>1789-07-14</td> </tr> <tr> <td>orange</td> <td>Banana</td> <td style="text-align: right;" mce_style="text-align: right;">4546</td> <td>1949-07-04</td> </tr> <tr> <td>Strawberry</td> <td>apple</td> <td style="text-align: right;" mce_style="text-align: right;">987</td> <td>1975-08-19</td> </tr> <tr> <td>Pear</td> <td>blueberry</td> <td style="text-align: right;" mce_style="text-align: right;">98743</td> <td>2001-01-01</td> </tr> <tr> <td>blueberry</td> <td>Pear</td> <td style="text-align: right;" mce_style="text-align: right;">4</td> <td>2001-04-18</td> </tr> </tbody> </table>