Operators of JScript

js|jscript| operations

JScript has a full range of operators, including arithmetic, logic, bits, assignments, and some other operators.

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Calculated	logical	bit Operations	Assigning values	Miscellaneous
Describe	Symbol	Describe	Symbol	Describe	Symbol	Describe	Symbol	Describe	Symbol
negative value		logic not	!	bitwise reverse	~	Assignment	=	delete	delete
increment		less than	<	bitwise left	<<	op assignment	OP =	typeof operator	typeof
descending		greater than	>	bitwise right-shift	>>	&NBSP;	&NBSP;	void	void
multiplication			<=	unsigned right-move	>>>	&NBSP;	&NBSP;	instanceof
Division		is greater than or equal to	>=	bitwise AND	&	&NBSP;	&NBSP;	new	new
modulo operation		equals		bitwise XOR or	^	&NBSP;	&NBSP;	in	in
addition		does not equal	!=	bitwise OR	|	&NBSP;	&NBSP;		&NBSP;
subtraction		Logic and	&&	&NBSP;	&NBSP;		&NBSP;	&NBSP;	&NBSP
&NBSP;	&NBSP;	logical OR	| |	&NBSP;	&NBSP;	&NBSP;	&NBSP;	&NBSP;	&NBSP;
&NBSP;	&NBSP;	condition (ternary operator)			&NBSP;	&NBSP;		&NBSP;	&NBSP;
&NBSP;	&NBSP;	comma			&NBSP;	&NBSP;		&NBSP;	&NBSP;
&NBSP;	&NBSP;	strictly equal		&NBSP;	&NBSP;		&NBSP;	&NBSP;
		Not strictly equal	!==

For example, the identity pair of the string "1" and the value 1 will result in a comparison of true. Strict equality does not cast different types of values, so it thinks that the string "1" is not the same as the value 1.

The basic string, numeric, and Boolean values are compared by value. If their values are the same, the comparison results are equal. Objects (including Array,Function,String,number,Boolean,Error, Date , and RegExp object) is compared by reference. Even if the two variables of these types have the same value, the comparison results are true only if they are exactly the same object.

For example:

Two basic strings with the same value. var string1 = "Hello";var string2 = "Hello"; Two objects with the same value  . var StringObject1 = new String(string1);var StringObject2 = new String(string2); The comparison result is  true . if (string1 == string2)       executes certain commands (that will be run). The comparison result is  false . if (StringObject1 == StringObject2)     // executes some commands (does not run). to compare  the value of an object,   or by using a   method. if (StringObject1.valueOf() == StringObject2)      // executes certain commands (that will be run).