Set DIV Height to 100% of Its Parent Using jQuery

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In this jQuery tutorial, you’ll learn how to set the height of a DIV to 100% of its parent. You’ll learn:

  • how to set variables and target selectors
  • how to get and set div height using height()
  • how to target multiple selectors at once

Watch the tutorial below:

Links mentioned in the video:

Here’s the code I used in the video:

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John Morris

JOHN MORRIS

I’m a 15-year veteran of freelance web development. I’ve worked with bestselling authors and average Joe’s next door. These days, I focus on helping other freelancers build their freelance business and their lifestyles.

This Post Has 2 Comments

  1. How would I make it say 75% of the height?

    I am using a YouTube video as a background header. The issue I have is that a lot of the video is hidden off the page, and this is happening because the section is set to be the height of the screen. Instead of being the height of the screen, I’d like to set the header to be full width, but the height automatically the correct height for the aspect ratio of the YouTube video (which is 1920 x 1080 px), how would I do this?

    I see I can make the height a percentage height of the screen, but what I think I need to do is use some CSS (or maybe CSS and jquery) to make the height of the div a percentage of the width of the div.

    1. You could change line 20 to:

      var container_height = parseInt($(‘.container’).height()) * .75;

      The .75 can, of course, be whatever percentage you want.

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