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JavaScript Tutorial
1.Language Basics
2.Operators
3.Statement
4.Development
5.Number Data Type
6.String
7.Function
8.Global
9.Math
10.Form
11.Array
12.Date
13.Dialogs
14.Document
15.Event
16.Location
17.Navigator
18.Screen
19.Window
20.History
21.HTML Tags
22.Style
23.DOM Node
24.Drag Drop
25.Object Oriented
26.Regular Expressions
27.XML
28.GUI Components
29.Dojo toolkit
30.jQuery
31.Animation
32.MS JScript
JavaScript Tutorial » Development » this 




Syntax

this
    this.property

The this keyword refers to the current object and is often used to pass entire objects, such as those contained in Form instances, to functions and methods specified in scripts.

<html>
    <head>
      <title> Using this in passing form information</title>
    <script language="JavaScript">
    <!--
    function displayInfo(form){
      var myWin = open("""","width=450,height=200");
      myWin.document.write("The defaultValue of the text box is: ");

      myWin.document.write(form.myText.defaultValue);

      myWin.document.write("<br>The name of the text area is: ");

      myWin.document.write(form.myTextArea.name);

      myWin.document.write("<br>The value of the button is: ");

      myWin.document.write(form.myButton.value);

      myWin.document.close();
    }
    -->
    </script>
    </head>
    <body>
    <form name="myForm">
      <textarea name="myTextArea" rows=cols=50>
      Here is some text in my text area.
      </textarea>
      <br>
      <input type=TEXT value="Change Me?" name="myText">
      <br>
      <input type=BUTTON value="Display Information" name="myButton" onClick='displayInfo(this.form)'>
    </form>
    </body>
    </html>














4.11.this
4.11.1.this
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