init

src/iview/utils/deepClone.js

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+
+/**
+ * 深度克隆对象
+ * 
+ * @param {*} obj 要克隆的对象
+ * @returns 克隆后的对象
+ */
+export function deepClone(obj) {
+  const cache = new Map();
+  function _deepClone(obj) {
+    if (typeof obj !== 'object' || obj === null) {
+      return obj;
+    }
+    if (cache.has(obj)) {
+      return cache.get(obj);
+    }
+    const result = Array.isArray(obj) ? [] : {};
+    cache.set(obj, result);
+    for (const key in obj) {
+      result[key] = _deepClone(obj[key]);
+    }
+    return result;
+  }
+  return _deepClone(obj);
+}
+