js操作table中tr的順序，實現上移下移一行的效果
阿新 • • 發佈：2018-11-21
總體思路是在table外部加個div，修改div的innerHtml實現改變tr順序的效果
具體思路是
獲取當前要移動tr行的rowIndex，在table中刪除掉，然後迴圈table的rows，到了目標行再直接加進去，最後把整體的html賦值給div完成效果
js程式碼如下
//使行向上一行 function setRowUp(obj) { if (obj.parentNode.parentNode.rowIndex != 1) { var tab = obj.parentNode.parentNode.parentNode;var nowNodeInnerHtml = obj.parentNode.parentNode.innerHTML; var nowNowIndex = obj.parentNode.parentNode.rowIndex; tab.deleteRow(nowNowIndex); var newHtml = "<table cellpadding=\"5\" cellspacing=\"0\">"; newHtml += ("<TR style='font-weight: bold; text-align: center;'>" + tab.rows[0].innerHTML + "</TR>");for (i = 1; i < tab.rows.length; i++) { if (i == (nowNowIndex - 1)) { newHtml += ("<TR>" + nowNodeInnerHtml + "</TR>"); } newHtml += ("<TR>" + tab.rows[i].innerHTML + "</TR>"); } newHtml+= "</table>"; document.getElementById("divContent").innerHTML = newHtml; } } //使行向下一行 function setRowDown(obj) { if (obj.parentNode.parentNode.rowIndex != (document.getElementById("divContent").childNodes[0].rows.length - 1)) { var tab = obj.parentNode.parentNode.parentNode; var nowNodeInnerHtml = obj.parentNode.parentNode.innerHTML; var nowNowIndex = obj.parentNode.parentNode.rowIndex; tab.deleteRow(nowNowIndex); var newHtml = "<table cellpadding=\"5\" cellspacing=\"0\">"; newHtml += ("<TR style='font-weight: bold; text-align: center;'>" + tab.rows[0].innerHTML + "</TR>"); for (i = 1; i < tab.rows.length; i++) { if (i == (nowNowIndex + 1)) { newHtml += ("<TR>" + nowNodeInnerHtml + "</TR>"); } newHtml += ("<TR>" + tab.rows[i].innerHTML + "</TR>"); } //向下可能到表格現有行數外 額外處理 if (tab.rows.length == (nowNowIndex + 1)) { newHtml += ("<TR>" + nowNodeInnerHtml + "</TR>"); } newHtml += "</table>"; document.getElementById("divContent").innerHTML = newHtml; } }
測試html程式碼如下
<body> <div id="divContent"> <table cellpadding="5" cellspacing="0"> <tr style='font-weight: bold; text-align: center;'><td>工號</td><td>姓名</td></tr> <tr><td>0001 <input type="button" value="↑" onclick="setRowUp(this)" /> <input type="button" value="↓" onclick="setRowDown(this)" /> </td><td>姓名01</td></tr> <tr><td>0002 <input type="button" value="↑" onclick="setRowUp(this)" /> <input type="button" value="↓" onclick="setRowDown(this)" /> </td><td>姓名02</td></tr> <tr><td>0003 <input type="button" value="↑" onclick="setRowUp(this)" /> <input type="button" value="↓" onclick="setRowDown(this)" /> </td><td>姓名03</td></tr> <tr><td>0004 <input type="button" value="↑" onclick="setRowUp(this)" /> <input type="button" value="↓" onclick="setRowDown(this)" /> </td><td>姓名04</td></tr> <tr><td>0005 <input type="button" value="↑" onclick="setRowUp(this)" /> <input type="button" value="↓" onclick="setRowDown(this)" /> </td><td>姓名05</td></tr> </table> </div> </body>