复制代码 代码如下:

function hb(){

var tab = document.getElementById("subtable");

var maxCol = 3, val, count, start;

var ys="";

for(var col = maxCol-1; col >= 0 ; col--) {

count = 1;

val = "";

for(var i=0; i<tab.rows.length; i++){

if(val == tab.rows[i].cells[col].innerHTML){

count++;

}else{

if(count > 1){

//合并

start = i - count;

if(ys=="#00FFFF"){

ys="#EEEE00";

}else{

ys="#00FFFF";

}

tab.rows[start].cells[col].rowSpan = count;

tab.rows[start].cells[1].style.backgroundColor=ys;//改变颜色

// ys="#EEEE00";

// tab.rows[i].cells[1].style.backgroundColor="#00FFFF";//改变颜色绿色

for(var j=start+1; j<i; j++){ //

tab.rows[j].cells[col].style.display = "none";

tab.rows[j].removeChild(tab.rows[j].cells[col]);

}

count = 1;

}

val = tab.rows[i].cells[col].innerHTML;

}

}

if(count > 1 ){ //合并，最后几行相同的情况下

start = i - count;

tab.rows[start].cells[col].rowSpan = count;

for(var j=start+1; j<i; j++) {

tab.rows[j].removeChild(tab.rows[j].cells[col]);

}

}

}

}