JavaScript Operators

Operators are the symbols that perform any specific operation.

As you Know in Mathematics when you have to add 2 numbers then you have to use (+) addition operator in between numbers to add them.

Same thing happens in Javascript.

There are Many Types of Operators.

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var x = 59;
var y = x % 5;
console.log(y);
Note :

Here,

x has the value of 59

y has the value of x % 5 i.e 59 % 5

59 % 5 ⇒ when 59 is divided by 5 its gives quotient 11 and remainder 4

So, value of y will be 4 i.e remainder

console.log(y) will print the value of y in console tab.

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var x = 50;
x += 5;
console.log(x);
Note :

Here,

x has the value of 50

x : x += 5 i.e x = 50 + 5

So, value of x will be 55

console.log(x) will print the value of x in console tab.

We use String operators to perform actions on String.

Example 1 :

var firstName ="java";
var lastName = "script";
var fullName = firstName + lastName;
console.log(fullName);

Here,

fullName is firstName + lastName

i.e. fullName is "java" + "script"

Output will be "javascript"

Example 2 :

var string ="Hello ";
var string2 = "World";
string += string2;
console.log(string);

Here,

string is "Hello " and string2 = " World"

string = string + string2

i.e. string is "Hello " + "World"

Output will be "Hello World"

Note :

You can also add numbers to the string

For Example :

var name = "Javascript";
var age = 25;
var description = "Hi my name is " + name + " and i am " + age + " years old.";
console.log(description);

Here,

Output will be : "Hi my name is Javascript and i am 25 years old."

We will be Studing about Comparison, Logical, Type and Bitwise Operators in their Respective Chapters.

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