js 递归实现深度克隆与浅克隆

2021-01-22 20:15

阅读：494

标签：vararg force alt axios 深度 hat ORC cts param

直接看代码吧，浅显易懂并配有英文注解，


	/**
	 * Iterate over an Array or an Object invoking a function for each item.
	 *
	 * If `obj` is an Array callback will be called passing
	 * the value, index, and complete array for each item.
	 *
	 * If ‘obj‘ is an Object callback will be called passing
	 * the value, key, and complete object for each property.
	 *
	 * @param {Object|Array} obj The object to iterate
	 * @param {Function} fn The callback to invoke for each item
	 */
	function forEach(obj, fn) {
	  // Don‘t bother if no value provided
	  if (obj === null || typeof obj === ‘undefined‘) {
	    return;
	  }
	
	  // Force an array if not already something iterable
	  if (typeof obj !== ‘object‘) {
	    /*eslint no-param-reassign:0*/
	    obj = [obj];
	  }
	
	  if (isArray(obj)) {
	    // Iterate over array values
	    for (var i = 0, l = obj.length; i

代码来源注释：作者在看axios源码时看到的片段。
技术图片