"Milk Powder " +
+ " for kids" ==
"Milk Powder NaN"
true + true > true
true + true <= true
true - true == true
"string" instanceof String
9999999999999999 == 10000000000000000
[]+{} == "[object Object]"
2 / false + 3 == Infinity
true == undefined == false
Number(true - false) == +false