How to implement deep copy in Javascript

In actual project development, you may encounter the problem of copying objects. The following describes how to copy objects and arrays in an object:

Function clone (o) {var K, ret = O, B; If (O & (B = (O instanceof array) | o instanceof object )) {ret = B? []: {}; For (K in O) {If (O. hasownproperty (k) {RET [k] = clone (O [k]) ;}} return ret ;}

The above "Deep copy" application:

VaR carobj = {color: ['red']}; var carobj1 = clone (carobj); carobj. color. Push ('blue ');

Continue to study "original type inheritance" of Douglas crockford in Chapter 4th of JavaScript design patterns ".