怎么修改能让这两个表格都实现十字变色

Question

<script>
var tb=document.getElementById("tb1");
var tbtr=tb.getElementsByTagName("tr");
var tbtd=tb.getElementsByTagName("td");
var tbrows=tbtr.length;
var tbcols=tbtr[0].getElementsByTagName("td").length;
var tbtds=tb.getElementsByTagName("td").length;
for(var i=0;i<tbrows;i++){
 for(var j=0;j<tbcols;j++){
  tbtd[(i*tbcols)+j].row=i;
  tbtd[(i*tbcols)+j].col=j;

  tbtd[(i*tbcols)+j].onmouseover=function(){
   for(var k=0;k<tbtds;k++){
    if(tbtd[k].row==this.row||tbtd[k].col==this.col){tbtd[k].style.background="#01a951";tbtd[k].style.color="#fff";}
    }
   }
  tbtd[(i*tbcols)+j].onmouseout=function(){
   for(var k=0;k<tbtds;k++){
    if(tbtd[k].row==this.row||tbtd[k].col==this.col){tbtd[k].style.background="";tbtd[k].style.color="";}
    }
   }
  }
 }
</script>

1	2	3	4	5
1	2	3	4	5
1	2	3	4	5

1	2	3	4	5
1	2	3	4	5
1	2	3	4	5

Answer 1

你这个ID为“tb1”的元素是第一个表格吗？能提供更多信息吗？

Answer 2

Css版

csstr:nth-child(2n)>td:nth-child(2n) {
    color: #333;
    background-color: green;
}

tr:nth-child(2n)>td:nth-child(2n+1) {
    color: #666;
    background-color: blue;
}

tr:nth-child(2n+1)>td:nth-child(2n) {
    color: #666;
    background-color: blue;
}

tr:nth-child(2n+1)>td:nth-child(2n+1) {
    color: #333;
    background-color: green;
}

Scss版

scss@mixin style1 {
    color: #333;
    background-color: green;
}

@mixin style2 {
    color: #666;
    background-color: blue;
}

tr {
    &:nth-child(2n) {
        &>td:nth-child(2n) {
            @include style1;            
        }
        &>td:nth-child(2n+1) {
            @include style2;
        }
    }
    &:nth-chlid(2n+1) {
        &>td:nth-child(2n) {
            @include style2;
        }
        &>td:nth-child(2n+1) {
            @include style1;
        }
    }
}