10 examples of 'javascript copy object without reference' in JavaScript

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221function copyObject(l,r)
222{var m={};extend(m,l);extend(m,r);return m;}
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134function copy_object(dest, src)
135{
136 for (var k in src) {
137 var getter = src.__lookupGetter__(k);
138 var setter = src.__lookupSetter__(k);
139
140 if (getter || setter) {
141 if (getter)
142 dest.__defineGetter__(k, getter);
143 if (setter)
144 dest.__defineSetter__(k, setter);
145 } else {
146 dest[k] = src[k];
147 }
148 }
149 if (src.prototype != undefined) {
150 dest.prototype = src.prototype;
151 } else {
152 delete dest.prototype;
153 }
154}
12function copy(obj) {
13 const type = typeOf(obj);
14 let daCopy;
15 if (type === 'array') {
16 daCopy = [];
17 } else if (type === 'object') {
18 daCopy = {};
19 } else {
20 return obj;
21 }
22 each(obj, (val, key) => {
23 daCopy[key] = val; // cannot single-line this because we don't want to abort the each
24 });
25 return daCopy;
26}
111function _deepCopy(target) {
112 if ((typeof target !== 'object') || !target) {
113 return target;
114 }
115 for (let i = 0; i < copyed_objs.length; i++) {
116 if (copyed_objs[i].target === target) {
117 return copyed_objs[i].copyTarget;
118 }
119 }
120 let obj = {};
121 if (Array.isArray(target)) {
122 obj = []; //处理target是数组的情况
123 }
124 copyed_objs.push({
125 target: target,
126 copyTarget: obj
127 })
128 Object.keys(target).forEach(key => {
129 if (obj[key]) {
130 return;
131 }
132 obj[key] = _deepCopy(target[key]);
133 });
134 return obj;
135}
71export function copy(object, deep) {
72 let result = object
73 if (is.array(object)) {
74 result = [ ]
75 array.each(
76 object,
77 function (item, index) {
78 result[index] = deep ? copy(item) : item
79 }
80 )
81 }
82 else if (is.object(object)) {
83 result = { }
84 each(
85 object,
86 function (value, key) {
87 result[key] = deep ? copy(value) : value
88 }
89 )
90 }
91 return result
92}
42function cloneJSObject(object)
43{
44 var keys = Object.keys(object);
45 var result = { };
46
47 for (var i = 0, length = keys.length; i < length; i++) {
48 var key = keys[i];
49 result[key] = object[key];
50 }
51
52 return result;
53}
389function copy(obj) {
390 return obj === undefined ? undefined : JSON.parse(JSON.stringify(obj));
391}
27copy: function copy_object (object) {
28 var result = {};
29 for (var prop in object) {
30 result[prop] = object[prop];
31 }
32 return result;
33},
659function copyArray(array) {
660 let newArray = [];
661 for (let item of array) {
662 newArray.push(copyObject(item));
663 }
664 return newArray;
665}
83function copyObject(from, to, validations, strict, decode) {
84 var extras = {};
85 if (from) {
86 for (var key in from) {
87 if (from.hasOwnProperty(key) && (!validations || strict || validations.hasOwnProperty(key))) {
88 try {
89 to[key] = (decode && typeof(from[key]) === 'string') ? decodeURIComponent(from[key]) : from[key];
90 } catch (err) {
91 to[key] = from[key];
92 }
93 } else {
94 try {
95 extras[key] = (decode && typeof(from[key]) === 'string') ? decodeURIComponent(from[key]) : from[key];
96 } catch (err) {
97 extras[key] = from[key];
98 }
99 }
100 }
101 }
102
103 return extras;
104}

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