
上代碼
<style>
.s-bg2{
backgound:#eee;
}
.s-c{
color:bule;
}
</style>
// 根據主題色變換樹的顏色
changeTreeAboutTheme(){
let that = this;
that.$nextTick(function(){
//先獲取節點
let array = document.querySelectorAll('.is-current');
if(array && array.length>0){
for (let i = 0; i < array.length; i++) {
const element = array[i];
//將原來的顏色置為無
const content = element.querySelectorAll('.el-tree-node__content');
content[0].style.background = "none";
// 加類,變更
if(element.className.indexOf('s-bg2') === -1){
element.className += " s-bg2 s-c";
}
}
}
})
},
