JS copies the properties of all object s to object R

This article mainly introduces the method of copying all object S's attribute to object R in JS, the native Js+jquery realizes

Native writing: Code as follows:/** * Copies all s properties to R * @param r {Object} * @param s {object} * @param is_overwrite {Boolean} as specified as False, no existing value is overwritten, other values * include undefined, which means that an attribute with the same name in S will overwrite the value in R/Mix:function (R, S, is_overwrite) {//todo:if      (!s | |!r) return r; For (var p in s) {if (Is_overwrite!== false | |!) (     P in R)) {R[p] = s[p];   } return R; jquery is too handy to write. Copy code code as follows: Var a={aa:1, ab:2};       var b={ba:1, bb:2};     $.extend (A,B); Console.info (a);