1 <!DOCTYPE html> 2 <html> 3 <head lang="en"> 4 <meta charset="UTF-8"> 5 <title></title> 6 </head> 7 <body> 8 <script> 9 10 //定义1（字面量定义） 11 var array1 = [1,2,3]; 12 var array2 = []; 13 console.log(typeof array1); 14 console.log(array1); 15 16 17 //定义2（对象创建） 18 var arr1 = new Array(); //空数组 19 var arr2 = new Array("关羽","张飞","刘备"); 20 var arr3 = new Array(1,2,3); 21 var arr3 = new Array(3); 22 console.log(arr1); 23 console.log(arr2); 24 console.log(arr3); 25 26 27 28 </script> 29 </body> 30 </html>