Run »
<!DOCTYPE html> <html> <head> <title>Javascript 实例化空数组，以清空数组</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <div>arr2 的值：</div> <div id="result"></div> <script> var arr1 = ['a','b','c','d','e','f']; var arr2 = arr1; // 变量 arr2 引用 arr1 arr1 = []; console.log(arr2); // 输出 ['a','b','c','d','e','f'] document.getElementById("result").innerHTML = arr2; </script> </body> </html>