JavaScript Comma Operator
Last Updated : 23 Nov, 2024
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JavaScript Comma Operator mainly evaluates its operands from left to right sequentially and returns the value of the rightmost operand.
let x = (1, 2, 3);
console.log(x);
Output
3
Here is another example to show that all expressions are actually executed.
let a = 1, b = 2, c = 3;
let res = (a++, b++, c++);
console.log(res);
console.log(a, b, c);
Output
3 2 3 4
Here is an example with function calls.
function Func1() {
console.log('one');
return 'one';
}
function Func2() {
console.log('two');
return 'two';
}
function Func3() {
console.log('three');
return 'three';
}
// Three expressions are
// given at one place
let x = (Func1(), Func2(), Func3());
console.log(x);
Output
one two three three
