A summary of javascript Learning (Boolean object) and javascriptboolean every day

A summary of javascript Learning (Boolean object) and javascriptboolean every day

Syntax for creating a Boolean object:
New Boolean (value); // Constructor
Boolean (value); // Conversion Function
The parameter value is the value stored by a Boolean object or converted to a Boolean value.
Return Value
When called as a constructor (with the new operator), Boolean () converts its parameters into a Boolean value and returns a Boolean object containing the value.
When called as a function (without the new operator), Boolean () only converts its parameters into an original Boolean value and returns this value.
Note: If the value parameter is omitted or set to 0,-0, null, "", false, undefined, Or NaN, the object is set to false. Otherwise, set it to true (even if the value parameter is a string "false ").

  var falseObject = new Boolean(false);  var result = falseObject && true;  alert(result); //true  var falseValue = false;  result = falseValue && true;  alert(result); //false    alert(typeof falseObject); //object  alert(typeof falseValue); //boolean  alert(falseObject instanceof Boolean); //true  alert(falseValue instanceof Boolean); //false

Boolean Object Description
In JavaScript, a Boolean value is a basic data type. A Boolean object is a Boolean object that packs a Boolean value. A Boolean object is mainly used to convert a Boolean value to a string's toString () method.
When the toString () method is called to convert a Boolean value to a string (usually called implicitly by JavaScript), JavaScript internally converts the Boolean value to a temporary Boolean object, then, call the toString () method of this object.

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