Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
384 views
in Technique[技术] by (71.8m points)

javascript - Trying to get element by className doesn't seem to be working

Trying to inject a dynamic year into HTML code.

Works fine with getElementById but getElementsByClassName doesn't seem to be working.

Here is my code...

HTML

<p>this year is <span class="year"></span></p>

JAVASCRIPT

document.getElementsByClassName("year").innerHTML = new Date().getFullYear();

Interested to see what I am doing wrong.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

You get an array of elements with this method. To access the first element write this:

document.getElementsByClassName("year")[0].innerHTML = new Date().getFullYear();

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...