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HTML CSS JavaScript Appendix
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scripts collection

Browser support:
Represents a collection of all script elements in the current document.
The elements in the collection are sorted in source code order.

Syntax:

Properties that reference the object:
•document.scripts
The base interface, through which you can add new functionalities to the scripts collection, is the HTMLCollection interface.

Possible members:

Properties:
length
Returns an integer that specifies the number of elements in the current collection.

This property is read-only.
Methods:
[nameOrIndex]
Returns an element or a collection of elements from the current collection by name or index.

Parameters:

nameOrIndex
Required. A string or a zero-based integer that specifies the element or elements to retrieve.
  • If an integer value is specified, it specifies the index of the element to retrieve.
  • If this parameter is a string, then it specifies a value for the name or id property of the element or elements to retrieve.

Return value:

  • If no match is found, it returns undefined.
  • If exactly one match is found, it returns the matching script element.
  • If more than one match is found, it returns a scripts sub-collection filled with the matching elements. The sub-collection contains the matching elements in source order.
item (nameOrIndex [, subIndex])
Returns an element or a collection of elements from the current collection by name or index.

Parameters:

nameOrIndex
Required. A string or a zero-based integer that specifies the element or elements to retrieve.
  • If an integer value is specified, it specifies the index of the element to retrieve.
  • If this parameter is a string, then it specifies a value for the name or id property of the element or elements to retrieve.
subIndex
Optional. Supported by Internet Explorer only. If more than one matching element is found for the index parameter (possible only if it is a string), the item method creates a scripts sub-collection filled with the matching elements. In that case, the subIndex property specifies the position of the element in the sub-collection to retrieve. In other cases, the subIndex property has no meaning.

Return value:

  • If no match is found, it returns null in Internet Explorer, Firefox and Opera, and returns undefined in Google Chrome and Safari.
  • If exactly one match is found, it returns the matching script element.
  • If more than one match is found, it returns a scripts sub-collection filled with the matching elements. The sub-collection contains the matching elements in source order.
namedItem (name)
Returns an element or a collection of elements from the current collection by name.

Parameters:

name
Required. String that specifies a value for the name or id property of the element or elements to retrieve.

Return value:

  • If no match is found, it returns null in Internet Explorer, Firefox and Opera, and returns undefined in Google Chrome and Safari.
  • If exactly one match is found, it returns the matching script element.
  • If more than one match is found, it returns a scripts sub-collection filled with the matching elements. The sub-collection contains the matching elements in source order.
tags
Returns a NodeList collection that contains all elements from the current collection with the specified tag name.
urns
Returns a NodeList collection that contains all elements to which the specified behavior is attached.

Example HTML code 1:

This example illustrates the use of the scripts collection:
 
<head>
    <script type="text/javascript">
        function GetFirstScript () {
            if ('scripts' in document) {// Internet Explorer, Opera, Google Chrome and Safari
                var scripts = document.scripts;
            }
            else {
                var scripts = document.getElementsByTagName ("script");
            }
            
            alert (scripts[0].text);
        }
    </script> 
</head>
<body>
    <button onclick="GetFirstScript ();">Get the contents of the first script tag!</button>
</body>
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Example HTML code 2:

Recommandation (because all commonly used browsers supports the getElementsByTagName method):
 
<head>
    <script type="text/javascript" id="myScript">
        function GetFirstScript () {
            var scripts = document.getElementsByTagName ("script");
            alert (scripts[0].text);
        }
    </script> 
</head>
<body>
    <button onclick="GetFirstScript ();">Get the contents of the first script tag!</button>
</body>
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External links:

scripts (MSDN)
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