数组的值传递

var num = 100; var num1 = num; num1 = 300; console.log('num', num);//100 300 console.log('num1', num1);// 300 var arr = ['李白', '张艺兴', '孙楠', '蔡旭坤']; var arr1 = arr; arr1[0] = '李冰冰'; console.log('arr'

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