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

Categories

I want to check whether an element exists in the whole page or not. Is there any way to know if the element exists in the page through jQuery?

For example:

<html>
     <body>
        <p id="para1" class="para_class"></p>
     </body>
</html>

In the above code, I have to check whether <p> of id para1 exists in the DOM or not. In any case if with the help of the 'class' attribute we can know if the element exists, it also would be helpful.

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…
thumb_up_alt 0 like thumb_down_alt 0 dislike
199 views
Welcome To Ask or Share your Answers For Others

1 Answer

For element IDs:

if($('#para1').length){
  //element with id exists
}

For element class:

if($('.para_class').length){
  //element with class exists
}

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…
thumb_up_alt 0 like thumb_down_alt 0 dislike
Welcome to ShenZhenJia Knowledge Sharing Community for programmer and developer-Open, Learning and Share
...