<a data-v-84976fe6 href="javascript：;" class=""><span data-v-84976fe6=""></span></a> after using document.createElement ("a") to create a tag, how to add data-v-84976fe6 this attribute
<a data-v-84976fe6 href="javascript：;" class=""><span data-v-84976fe6=""></span></a> after using document.createElement ("a") to create a tag, how to add data-v-84976fe6 this attribute
var tagA = document.createElement("a");
tagA.dataset['v-84976fe6']=""Custom properties of DOM, which can be obtained and set through dataset
var a=document.createElement("a");
a.setAttribute("data-v-84976fe6","new")//getAttribute () method to get
var tag=document.getElementsByTagName ("a");
tag.setAttribute ('data-v-84976fe6', "value");
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