我遇到了数组和循环的问题,我想从数组中设置两个属性(yt到task和href到b b_yt),例如:
//from
<div class="task" yt="">
<div class="button">
<a class="b b_yt" href="">
</div>
</div>
<div class="task" yt="">
<div class="button">
<a class="b b_yt" href="">
</div>
</div>
<div class="task" yt="">
<div class="button">
<a class="b b_yt" href="">
</div>
</div>
//to
<div class="task" yt="a">
<div class="button">
<a class="b b_yt" href="a">
</div>
</div>
<div class="task" yt="b">
<div class="button">
<a class="b b_yt" href="b">
</div>
</div>
<div class="task" yt="b">
<div class="button">
<a class="b b_yt" href="b">
</div>
</div>
我的js:
var arr = ['a','b','c'];
var allBtn = document.querySelectorAll('a.but.b_yt');
var allDiv = document.querySelectorAll('div.task');
allDiv.forEach(function(item, i){
item.setAttribute('yt', arr[i]);
});
//This is changing yt attribute in task and it is working
如何从div.task获取yt属性值并在a.but b_yt中将其设置为href,当然是在循环中?
答案 0 :(得分:0)
allDiv.forEach(function(item, i){
$(item).closest("task")[0].setAttribute('yt', arr[i]);
});
使用最近的jquery函数来获取父类名称的父项。