difference between = == === in javascript code example
Example 1: difference between == and === in javascript
0 == false // true
0 === false // false, because they are of a different type
1 == "1" // true, automatic type conversion for value only
1 === "1" // false, because they are of a different type
null == undefined // true
null === undefined // false
'0' == false // true
'0' === false // false
Example 2: javascript == vs ===
var one = 1;
var one_again = 1;
var one_string = "1"; // note: this is string
console.log(one == one_again); // true
console.log(one === one_again); // true
console.log(one == one_string); // true.
console.log(one === one_string); // false.