Getting the actual, floating-point width of an element

by

If you already have a reference to the DOM element, element.getBoundingClientRect will get you the values you want.

The method has existed since Internet Explorer 4, and so it’s safe to use everywhere. However, the width and height attributes exist only in IE9+. You have to calculate them if you support IE8 and below:

var rect = $("#a")[0].getBoundingClientRect();

var width;
if (rect.width) {
  // `width` is available for IE9+
  width = rect.width;
} else {
  // Calculate width for IE8 and below
  width = rect.right - rect.left;
}

getBoundingClientRect is 70% faster than window.getComputedStyle in Chrome 28, and the differences are greater in Firefox: http://jsperf.com/getcomputedstyle-vs-getboundingclientrect

More Related Contents:

  1. Is it possible to use jQuery to get the width of an element in percent or pixels, based on what the developer specified with CSS?
  2. jQuery Adding new option to select element doesn't pick up the string [closed]
  3. Slide down button to show text HTML CSS
  4. Bootstrap 3 Collapse show state with Chevron icon
  5. Add and remove a class on click using jQuery?
  6. css width: calc(100% -100px); alternative using jquery
  7. Number nested ordered lists in HTML
  8. Use jQuery/CSS to find the tallest of all elements [duplicate]
  9. How do I auto-hide placeholder text upon focus using css or jquery?
  10. Set width of a “Position: fixed” div relative to parent div
  11. How to make a hover effect for pseudo elements?
  12. What CSS3 selectors does jQuery really support, e.g. :nth-last-child()?
  13. Exporting PDF with jspdf not rendering CSS
  14. How to take id as selector when used hash?
  15. Get height of div with no height set in css
  16. auto resize text (font size) when resizing window?
  17. Mobile site – force landscape only / no auto-rotate
  18. Check, using jQuery, if an element is ‘display:none’ or block on click
  19. How can I tell if a particular CSS property is inherited with jQuery?
  20. Change button text jquery mobile
  21. Bootstrap 4 with remote Modal
  22. Animate an element’s width from 0 to 100%, with it and it’s wrapper being only as wide as they need to be, without a pre-set width, in CSS3 or jQuery
  23. CSS for the “down arrow” on a element?
  24. How to create a diagonal line within a table cell?
  25. Show/ Hide Table Column with colspan using jQuery
  26. Overriding CSS styles of the jQuery UI Tooltip widget
  27. JQuery search in static HTML page with highlighting of found word
  28. The .fadeOut() method to use visibility property instead of display property
  29. Bootstrap Carousel showing next and previous image
  30. Possible to have a floating horizontal scrollbar?

Leave a Comment