console.log(‘[] == []是：‘+([] == [])); //falseconsole.log(‘[] === []是：‘+([] === [])); //falseconsole.log(‘{} == {}是：‘+({} == {})); //falseconsole.log(‘{} === {}是：‘+({} === {})); //false
//trueconsole.log( ‘[] == !{}是：‘+([] == !{} )); /*!{}是个布尔值，为false，因此我们比较的是 [] == 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)); //trueconsole.log(‘n0 == n3是：‘+(n0 == n3)); //trueconsole.log(‘n0 === n1是：‘+(n0 === n1)); //falseconsole.log(‘n0 === n3是：‘+(n0 === n3)); //trueconsole.log(‘n1 == n2是：‘+(n1 == n2)); //falseconsole.log(‘n1 === n2是：‘+(n1 === n2)); //falseconsole.log(‘n1 == n3是：‘+(n1 == n3)); //trueconsole.log(‘n1 === n3是：‘+(n1 === n3)); //falseconsole.log(‘n3 == n4是：‘+(n3 == n4)); //trueconsole.log(‘n3 === n4是：‘+(n3 === n4)); //true
输出截图：
原文：http://www.ido321.com/1427.html
原文：http://my.oschina.net/461147874/blog/383221