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js動態的合併table的單元格

//多級次動態合併表格行 function checkArray(arr1,arr2){ for (var i = 0; i < arr1.length; i++) { if (arr1[i].innerText===arr2[i].innerText) { }else{ return false; } } return true; } function
dynamicMergeTableRow(tableId){
var tb = document.getElementById(tableId); var obj1; var obj2; var objtemp1 = []; var objtemp2 = []; var rowCount = tb.rows.length; console.info(rowCount); var colCount = tb.rows[0
].cells.length; console.info(rowCount); var colLength = 4; //命名(表頭除外) for (var i = 1; i < rowCount; i++) { for (var j = 0; j < colCount; j++) { tb.rows[i].cells[j].id = "tb_" + i.toString() + "_" + j.toString(); } } //從後往前檢查,進行逐列檢查合併,開始列為colLength-1
for (var col = colLength -1; col >= 0; col--) { //當col>0時有前方的單元格 if (col > 0) { //objtemp1為obj1左側所有單元格集合,初始objtemp1及obj1均從第二行開始(tb_1_) for (var l = 0; l < col; l++) { objtemp1[l] = document.getElementById("tb_1_" + l.toString()); } } obj1 = document.getElementById("tb_1_" + col.toString()); //obj2為obj1下方單元格,obj1從第二行開始,則obj2從第三行開始,遍歷以row=2為起始值 for (var row = 2; row < rowCount; row++) { //同obj1及objtemp1,col>0:即有前方單元格,此時有objtemp2 if (col > 0) { for (var l = 0; l < col; l++) { objtemp2[l] = document.getElementById("tb_" + row.toString() +"_"+ l.toString()); } } obj2 = document.getElementById("tb_" + row.toString() +"_"+ col.toString()); //定義完obj1/obj2/objtemp1/objtemp2後,開始合併 //第一層判斷:當obj1的值等於obj2時,即同一列的相鄰單元格值相同 if (obj1.innerText == obj2.innerText) { //第二層判斷:obj1/obj2所在列前方還有其他列:即col>0(此步判斷為單元格合併的依賴性提供支援) if (col > 0) { //第三層判斷:obj1/obj2所在列前方還有其他列,且objtemp1,objtemp2值完全相同,可以合併 if (checkArray(objtemp1,objtemp2)) { obj1.rowSpan++; obj2.parentNode.removeChild(obj2); } //第三層判斷:obj1/obj2所在列前方還有其他列,且objtemp1,objtemp2值不同,不可合併,並重新對obj1/objtemp1賦值,令其等於原來的obj2/objtemp2 else{ obj1 = document.getElementById("tb_" + row.toString() +"_"+ col.toString()); for (var l = 0; l < col; l++) { objtemp1[l] = document.getElementById("tb_" + row.toString() +"_"+ l.toString()); } } } //第二層判斷:obj1/obj2所在列為首列,直接合並 else{ obj1.rowSpan++; obj2.parentNode.removeChild(obj2); } } //第一層判斷:當obj1的值不等於obj2時,即同一列的相鄰單元格值不相,此時重新對obj1/objtemp1賦值,令其等於原來的obj2/objtemp2 else{ obj1 = document.getElementById("tb_" + row.toString() +"_"+ col.toString()); for (var l = 0; l < col; l++) { objtemp1[l] = document.getElementById("tb_" + row.toString() +"_"+ l.toString()); } } } objtemp1 = []; objtemp2 = []; } } dynamicMergeTableRow('table1');