Create JS深拷贝的实现.js

JS深拷贝的实现.js

@@ -0,0 +1,47 @@
+// 1
+function deepClone(origin, target) {
+    var target = target || {};
+    for(var key in origin) {
+        if(origin.hasOwnProperty(key)) {
+            if(Array.isArray(origin[key])) {
+                target[key] = [];
+                deepClone(origin[key], target[key]);
+            } else if (typeof origin[key] === 'object' && origin[key] !== null) {
+                target[key] = {};
+                deepClone(origin[key], target[key]);
+            }
+            target[key] = origin[key];
+        }
+    }
+    return target;
+}
+// 2
+function type(obj) {
+	var typeString = Object.prototype.toString.call(obj);
+	return typeString.slice(8, typeString.length - 1);
+}
+function deepClone(origin, target) {
+    var target = target || {};
+    for(var key in origin) {
+        if(origin.hasOwnProperty(key)) {
+            target[key] = type(origin[key]) === 'Array' ?
+              deepClone(origin[key], []) :
+              type(origin[key]) === 'Object' ? deepClone(origin[key], {}) : origin[key];
+        }
+    }
+    return target;
+}
+// 3
+function deeoClone(origin, target) {
+  return Object.assign(target, JSON.parse(JSON.stringify(origin)));
+}
+
+var origin = {
+	'a': [1,2,3],
+	'b': {
+		'c': 123,
+		'd': undefined
+    }
+}
+var target = {'e': 'Rainy', 'f': {}}
+deepClone(origin, target);