JavaScript Reference
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Quick Reference

The window.outerWidth property returns the outer width of the browser window, including all interface elements such as toolbars and scrollbars.

<!-- html element to place output -->
<p id="my_output"></p>

Either of the following two methods works.

// variable
let my_width = window.outerWidth;

// output to HTML my_element
document.getElementById('my_output').innerHTML = my_width;
// variable
let my_width = outerWidth;

// output to HTML my_element
document.getElementById('my_output').innerHTML = my_width;

Output

1728

Syntax

window.outerWidth

// or

outerWidth

JavaScript Notes:

  • When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • JavaScript is a case-sensitive language; firstName is NOT the same as firstname
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
  • JavaScript variables must begin with a letter, $, or _
  • JavaScript variables are case sensitive (x is not the same as X)
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