JavaScript Boolean Object
The Boolean object is used to convert a non-Boolean value to a Boolean value (true or false).
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Try it Yourself - Examples |
Check Boolean value
Check if a Boolean object is true or false.
Complete Boolean Object Reference
For a complete reference of all the properties and methods that can be used with
the Boolean object, go to our complete Boolean object reference.
The reference contains a brief description and examples of use for each property and method!
Create a Boolean Object
The Boolean object represents two values: "true" or "false".
The following code creates a Boolean object called myBoolean:
| var myBoolean=new Boolean(); |
Note: If the Boolean object has no initial value or if it is 0, -0, null, "", false, undefined,
or NaN, the object is set to false. Otherwise it is true (even with the string "false")!
All the following lines of code create Boolean objects with an initial value of false:
var myBoolean=new Boolean();
var myBoolean=new Boolean(0);
var myBoolean=new Boolean(null);
var myBoolean=new Boolean("");
var myBoolean=new Boolean(false);
var myBoolean=new Boolean(NaN); |
And all the following lines of code create Boolean objects with an initial value of true:
var myBoolean=new Boolean(true);
var myBoolean=new Boolean("true");
var myBoolean=new Boolean("false");
var myBoolean=new Boolean("Richard"); |
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