var x = {}; console.log(x + 0 == x - 0) var x = []; console.log(x + 0 == x - 0) var x = (function(){}); console.log(x + 0 == x - 0) var x = null; console.log(x + 0 == x - 0) var x = undefined; console.log(x + 0 == x - 0) var x = Infinity; console.log(x + 0 == x - 0) var x = Array; console.log(x + 0 == x - 0) var x = 0; console.log(x + 0 == x - 0) var x = false; console.log(x + 0 == x - 0) var x =