isEqual
_.isEqual(object, other)
执行两个对象之间的优化深度比较，确定他们是否应被视为相等。
var stooge = {name: 'moe', luckyNumbers: [13, 27, 34]};var clone = {name: 'moe', luckyNumbers: [13, 27, 34]};stooge == clone;=> false_.isEqual(stooge, clone);=> true_.isEqual(object, other)
执行两个对象之间的优化深度比较，确定他们是否应被视为相等。
var stooge = {name: 'moe', luckyNumbers: [13, 27, 34]};var clone = {name: 'moe', luckyNumbers: [13, 27, 34]};stooge == clone;=> false_.isEqual(stooge, clone);=> true