Html dom tutorial 46-JavaScript Boolean object

Html dom tutorial 46-JavaScript Boolean object

 

　　A Boolean object is a basic data type of JavaScript.

　　A Boolean object is a Boolean object that packages a Boolean value.

1: Boolean object Method

Method	Description	FF	N	IE
ToSource ()	Source code of the object	1	4	-
ToString ()	Converts a logical value to a string and returns the result.	1	4	4
ValueOf ()	Returns the original value of a Boolean object.	1	4	4

2: attribute of a Boolean object

Attribute	Description	FF	N	IE
Constructor	A reference to the function that creates this object	1	2	4
Prototype	Allows you to add attributes and methods to an object	1	2	4

 

3: valueOf () method

　　

In this example, we will create a Boolean object and use valueOf () to obtain the original value of this object:

<script type="text/javascript">



var boo = new Boolean(false)

document.write(boo.valueOf())



</script>

Output:

false