[JavaScript] JavaScript learns 26 JavaScript Boolean (logical) objects.

A boolean (logical) object is used to convert non-logical values to logical values (true or false ).

Instance

Check logical values

Check whether the logical object is true or false.

Complete Boolean Object Reference Manual

We provideJavascript Boolean Object Reference ManualIncluding all attributes and methods that can be used for array objects.

This Manual contains a detailed description of each attribute and method and related examples.

Boolean object

You can understand a Boolean object as an object wrapper that generates logical values.

A boolean (logical) object is used to convert non-logical values to logical values (true or false ).

Use the keyword new to define a Boolean object. The followingCodeA logical object named myboolean is defined:

VaR myboolean = new Boolean ()
 

Note:If the logical object has no initial value or its value is 0,-0, null, "", false, undefined, Or Nan, the object value is false. Otherwise, the value is true (even when the independent variable is string "false )!

All the following code lines will create a Boolean object whose initial value is 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)
 

All the following code lines will create a Boolean object whose initial value is true:

 
VaR myboolean = new Boolean (true) var myboolean = new Boolean ("true") var myboolean = new Boolean ("false") var myboolean = new Boolean ("Richar ")D ")