JS對象數組的深度拷貝

直接=是淺拷貝,對于想完全複制可以這樣:

途徑1  let arrObj2=JSON.parse(JSON.stringify(arrObj1));

途徑2 

var objDeepCopy = function (source) {

    var sourceCopy = source instanceof Array ? [] : {};

    for (var item in source) {

        sourceCopy[item] = typeof source[item] === 'object' ? objDeepCopy(source[item]) : source[item];

    }

    return sourceCopy;

}

var objCopy = objDeepCopy(obj);

objCopy[0].a.a1[1] = "a13";

objCopy[1][1].e = "6";

obj   // => [{ "a": { "a1": ["a11", "a12"], "a2": 1 }, "b": 2 }, ["c", { "d": 4, "e": 5 }]]

objCopy   // => [{ "a": { "a1": ["a11", "a13"], "a2": 1 }, "b": 2 }, ["c", { "d": 4, "e": 6 }]]