练习题:
1 console.log([0] == true); //false 2 console.log(0 == false); //true 3 console.log(undefined == null); //true 4 console.log(‘0‘ == undefinded); //false
js—双等号引起的类型转换过程
原文:http://www.cnblogs.com/happy1992/p/7140617.html