AJAX Tutorials

Ajax request when the page is closed
- Simple JavaScript script to make Ajax request when the user closes the page. Register with Ajax and PHP the time users spend on website
Check and Validate input field when loses focus, with PHP via Ajax
- Check and Validate input form field when loses focus, onblur event, with PHP via Ajax
Multiple Select Dropdown List with AJAX
- Multiple Select Dropdown List with AJAX, create triple select option lists with data from MySQL table
Multiple upload files
- Ajax Script, Multiple upload files by adding multiple uploading input fields in the form
Execute JavaScript scripts loaded via AJAX
- Ajax Tutorial - Execute JavaScript scripts loaded via AJAX, response from PHP
Download AJAX resources
- Free Download AJAX resources, pdf ebooks, video courses and tutorials for learning AJAX

Which meta tag provides a short description of the page?

<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