javascript - How can I get the value of 'data-wpid'

Question

(This question already has answers here): question from:https://stackoverflow.com/questions/66052040/how-can-i-get-the-value-of-data-wpid

Answer 1

querySelector is for selecting DOM elements. You've already found the element, it's in the CLASS variable.

The method for getting the value of an attribute is getAttribute(), e.g. CLASS.getAttribute("data-wpid"). But you can use the dataset property to access data-XXX attributes directly.

var CLASS = document.querySelector("[class='buyButtonNoPrice']")
var PID = CLASS.dataset.wpid;
console.log(PID)

<div class="buyButtonNoPrice" data-wpid="3218954"></div>