javascript - Get variable div height and plant var into another css selector - Stack Overflow

admin管理员组

文章数量:1415139

Geniuses, Is this possible? Please help as my jQuery javascripting is bad.

I need to get the height of a div, which is dynamically created (so has auto height by default) - the dynamic tweet content is also generated by javascript, which I hope isnt causing issues.

See my dynamic div...

<div id="tweet-area"></div>

I then need to plant the div#tweet-area height into the script below...

$("#sidebar-wrapper").css({ bottom: " + variable here + " });

So this was my attempt, but not its quite working...

var tweetheight = document.getElementById('tweet-area').offsetHeight;

$("#sidebar-wrapper").css({ bottom: " + tweetheight + " });

Any advice would be hugely helpful thanks.

Josh

---

UPDATE

This is the script that works - loaded after the tweet script

var tweetheight = $("#tweet-area").height();
$("#sidebar-wrapper").css({ bottom: tweetheight});

Thank you all!

Geniuses, Is this possible? Please help as my jQuery javascripting is bad.

I need to get the height of a div, which is dynamically created (so has auto height by default) - the dynamic tweet content is also generated by javascript, which I hope isnt causing issues.

See my dynamic div...

<div id="tweet-area"></div>

I then need to plant the div#tweet-area height into the script below...

$("#sidebar-wrapper").css({ bottom: " + variable here + " });

So this was my attempt, but not its quite working...

var tweetheight = document.getElementById('tweet-area').offsetHeight;

$("#sidebar-wrapper").css({ bottom: " + tweetheight + " });

Any advice would be hugely helpful thanks.

Josh

---

UPDATE

This is the script that works - loaded after the tweet script

var tweetheight = $("#tweet-area").height();
$("#sidebar-wrapper").css({ bottom: tweetheight});

Thank you all!

• javascript
• jquery
• height
• getelementbyid
• var

Share Improve this question Follow edited Nov 17, 2011 at 14:40 Joshc asked Nov 17, 2011 at 14:20 JoshcJoshc 3,8631616 gold badges8181 silver badges125125 bronze badges 5

• 1 $( '#sidebar-wrapper' ).css({ bottom: $( '#tweet-area' ).height() }); – Šime Vidas Commented Nov 17, 2011 at 14:22
• it's not working still? Though I didnt know you could write it that short. I can see it should work. – Joshc Commented Nov 17, 2011 at 14:26
• Also notice that you should run it after your #tweet-area has been populated (with tweets). – Stefan Commented Nov 17, 2011 at 14:28
• Do you execute this AFTER the tweet-area has been added to the DOM? Also are the tweet inside the tweet-area float: left (or right?) If they are you'll need to do a clearfix. You may need to do one anyway. – kasdega Commented Nov 17, 2011 at 14:30
• It works thanks - I added the script after the tweet area has been added to the DOM. Thanks for all the helpful advice! – Joshc Commented Nov 17, 2011 at 14:39

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 2

maybe $("#sidebar-wrapper").css("bottom", tweetheight); would do it?

var tweetheight = $("#tweet-area").height();

Has worked for me in getting the height of an element ^

Why are you putting a variable name in quotes? That makes it a string. Try this:

var tweetheight = document.getElementById('tweet-area').offsetHeight;
$("#sidebar-wrapper").css({ bottom: tweetheight});

I'd remend not using jQuery unless necessary, though. The CSS properties could easily be changed without jQuery like this:

document.getElementById('sidebar-wrapper').style.bottom = tweetheight + 'px';

本文标签： javascriptGet variable div height and plant var into another css selectorStack Overflow