Page sizes

If you want to get the total Height and Width of the page content in JavaScript, you can use this code:
// gets the total height of the page content
var page_height = document.body.offsetHeight ? document.body.offsetHeight : document.height;

// gets the total width of the page content
var page_width = document.body.offsetWidth ? document.body.offsetWidth : document.width;

// Test
alert('Height: '+ page_height +' px \nWidth: '+ page_width +' px');
- Example:
Click:

Window sizes

This function, getWindowSize(), can be used to get the Height and Width of the browser window, in pixels:
// Returns an Array with the 'height' and 'width' of the browser window, in pixels
function getWindowSize() {
 // from:  https://coursesweb.net/javascript/
  var win_size = new Array;
  if (self.innerHeight) {
    win_size['height'] = self.innerHeight;
    win_size['width'] = self.innerWidth;
  } else if (document.documentElement && document.documentElement.clientHeight) {
    win_size['height'] = document.documentElement.clientHeight;
    win_size['width'] = document.documentElement.Width;
  } else if (document.body) {
    win_size['height'] = document.body.clientHeight;
    win_size['width'] = document.body.clientWidth;
  }
  return win_size;
}

// Test: gets the array with the window sizes
var win_dim = getWindowSize();
alert('Height: '+ win_dim['height'] +' px \nWidth: '+ win_dim['width'] +' px');
- Example:
Click:

Daily Test with Code Example

HTML
CSS
JavaScript
PHP-MySQL
Which meta tag provides a short description of the page?
<meta content="..."> <meta description="..."> <meta http-equiv="...">
<meta name="description" content="70-160 characters that describes the content of the page" />
Which CSS property is used to stop the wrapping effect of the "float"?
clear text-align position
#some_id {
  clear: both;
}
Click on the method which gets an array with all the elements in the document that have a specified tag name.
getElementsByName() getElementById() getElementsByTagName()
var divs = document.getElementsByTagName("div");
var nr_divs = divs.length;
alert(nr_divs);
Indicate the PHP function which returns the number of elements in array.
is_[) count() strlen()
$arr =[7, 8, "abc", 10);
$nri = count($arr);
echo $nri;        // 4
Get the Height and Width of web Page and browser Window

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