Comparison Equal-to Operator

Comparison Equal-to

comparison equal-to operator takes two operands, returns true if left and right operands are equal in value, or false if not

== symbol is used for comparison equal-to operator

a == 5  //returns true if a has a value of 5
a == b  //returns true if a and b has same value

equal-to operator does not check if the operands are of same data type, but only checks if they have same value

a = 5    //a has a value of 5
a == '5' //returns true
a == 5   //returns true

1. check if value of a is equal to 5

var a = 5;
if (a == 5) {
    console.log('value of a is 5');
} else {
    console.log('value of a is not 5');
}

2. check if values in a and b are equal to each other

var a = 5;
var b = 7;
if (a == b) {
    console.log('a and b are equal in value');
} else {
    console.log('a and b are not equal in value');
}

3. check if value in a is equal to 5

var a = '5';
if (a == 5) {
    console.log('value of a is 5');
} else {
    console.log('value of a is not 5');
}

a is assigned with a string type value. comparison equal-to operator does not check the type, but only value