JavaScript 数组对象的方法
- <html>
- <head>
- <TITLE>Array object method</TITLE>
- <SCRIPT Language = "JavaScript">
- {
- var s1 = new Array("北京","天津","上海");
- var s2 = new Array("重庆");
- document.write("数组s1为："+s1.valueOf() + "<br>");
- document.write("数组s2为："+s2.valueOf() + "<br>");
- var s3 = s1.concat(s2);
- document.write("数组合并后的数组s3为：<br>" + s3 + "<br>");
- document.write("合并后调用方法join()'[s3.join('-')]'的结果为：<br>" + s3.join('-') + "<br><br>");
- s3.splice(1,2,"济南","太原","郑州");
- document.write("对上面的数组再调用splice(1,2,'济南','太原','郑州')的结果为：<br>" + s3+"<br><br>");
- s4 = s3.slice(1, 4);
- document.write("对上面的数组调用slice（1，4）方法的结果为：<br>" + s4 + "<br><br>");
- document.write("数组s4为：<br>" + s4.valueOf() + "<br><br>");
- s4.push("西安","沈阳");
- document.write("对s4数组调用push('西安','沈阳')方法的结果为：<br>" + s4 + "<br><br>");
- s4.pop();
- document.write("对s4数组调用pop()方法的结果为：<br>" + s4 + "<br><br>");
- s4.pop();
- document.write("对s4数组再调用pop()方法的结果为：<br>" + s4 + "<br><br>");
- s4.unshift("西安","沈阳");
- document.write("对s4数组调用unshift('西安','沈阳')方法的结果为：<br>" + s4 + "<br><br>");
- s4.shift();
- document.write("对s4数组调用shift()方法的结果为：<br>" + s4 + "<br><br>");
- s4.shift();
- document.write("对s4数组调用shift()方法的结果为：<br>" + s4 + "<br><br>");
- document.write("对数组的排序和反转<br><br>");
- var num = new Array(50,20,45,37,68,34,58);
- document.write("数组num的初始值为：" + num.valueOf() + "<br><br>");
- num.sort();
- document.write("对数组num调用sort()方法排序后的结果为：" + num + "<br>");
- num.reverse();
- document.write("对数组num调用reverse()方法后的结果为：" + num + "<br>");
- }
- </SCRIPT>
- </head>
- </html>