我在 Javascript 控制台中有一个循环不起作用。 一种

Question

I have a loop that I want to use to print all element with a specific class name from a webpage.

var arr = [];
for (let i = 0; i < 15; i++) {
    document.getElementsByClassName("wM6scouPXXsFDSZmZPHRo DjcdNGtVXPcxG0yiFXIoZ _23wugcdiaj44hdfugIAlnX”)[i].href
}

This code only prints the last element. I have also tried adding a variable and printing it with console.log, it will return an Undefined.

Maybe the URL I am working with is blocking my requests? It only shows the last element and not the one from 1-15.

Answer 1

Run this in developer tools of stackoverflow page. getElementsByClassName will get all the elements with same class. It will be an array of elements, loop over each element and access href.

 const links = document.getElementsByClassName('question-hyperlink'); console.log(links) for (let i = 0; i < links.length; i++) { console.log(links[i].href) }