Booleans are the "true" and "false" values
20 > 2; // true
2 >= 2; // true
5 < 5; // false
5 <= 10; // true
20 == 20; // true
'john' == 'johnny' // false
'a' == 'A' // false
20 === "20"; // false - same value but different types
20 != 10; // true
10 != 10; // false
"10" !== 10; // true - type is different
/*
Be careful when using greater than and less than operators with different data types.
That can lead to unexpected results
*/
Booleans可進行判斷式
var orderValue = 2800;
if( orderValue >= 1000 ) {
console.log("You are eligible to finance your order.");
} else {
console.log("Finance options are not available for orders below US$1000");
}