console.log('[] == []是：'+([] == [])); //false
console.log('[] === []是：'+([] === [])); //false
console.log('{} == {}是：'+({} == {})); //false
console.log('{} === {}是：'+({} === {})); //false
//true
console.log( '[] == !{}是：'+([] == !{} )); /*!{}是個布爾值，為false，因此我們比較的是 [] == 0*/
var n0 = 123;
var n1 = new Number(123);
var n2 = new Number(123);
var n3 = Number(123);
var n4 = Number(123);
console.log('n0 == n1是：'+(n0 == n1)); //true
console.log('n0 == n3是：'+(n0 == n3)); //true
console.log('n0 === n1是：'+(n0 === n1)); //false
console.log('n0 === n3是：'+(n0 === n3)); //true
console.log('n1 == n2是：'+(n1 == n2)); //false
console.log('n1 === n2是：'+(n1 === n2)); //false
console.log('n1 == n3是：'+(n1 == n3)); //true
console.log('n1 === n3是：'+(n1 === n3)); //false
console.log('n3 == n4是：'+(n3 == n4)); //true
console.log('n3 === n4是：'+(n3 === n4)); //true
輸出截圖：
原文：http://www.ido321.com/1427.html
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