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獲得屬性的循環,我與陣列和環出了問題,我想從陣列設置兩個屬性(YT具體任務和HREF到b b_yt),例如:JQuery的,如何從父
//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
如何獲得YT從div.task屬性值,並在a.but b_yt環路設置在HREF,當然?