javascript 数组部分
<html>
<body>
<script type="text/javascript">
var arr = new Array(6)
arr[0] = "George"
arr[1] = "John"
arr[2] = "Thomas"
arr[3] = "James"
arr[4] = "Adrew"
arr[5] = "Martin"
arr.splice(2,1)//从下标为2的开始删除 删除一个元素
document.write(arr + "<br />")
arr.splice(3,0,"lisa")//从下标为3的删除 删除0个元素 添加一个元素lisa
document.write(arr + "<br />")
arr.push("adam")//在数组末尾添加元素adam
document.write(arr + "<br />")
arr.unshift("russel")//在数组开头添加元素russel
document.write(arr + "<br />")
</script>
</body>
</html>
<html>
<body>
<script type="text/javascript">
var x
var mycars = new Array()
mycars[0] = "Saab"
mycars[1] = "Volvo"
mycars[2] = "BMW"
document.write("</br>"+mycars.sort());//按照首字母和首个数字的顺序排序
document.write("</br>"+mycars.pop())//删除并显示最后一个
document.write("</br>"+mycars.shift())//删除并显示第一个
document.write("</br>")
x=mycars.join(":")//join() 方法用于把数组中的所有元素放入一个字符串。
document.write(x)
document.write("</br>"+mycars.reverse())//反向数组中的顺序
document.write("</br>"+mycars.length)//输出数组的长度
</script>
</body>
</html>
<html>
<body>
<script type="text/javascript">
function sortNumber(a, b)
{
return a - b
}
var arr = new Array(6)
arr[0] = "10"
arr[1] = "5"
arr[2] = "40"
arr[3] = "25"
arr[4] = "1000"
arr[5] = "1"
document.write(arr + "<br />")
arr.sort()
document.write(arr + "<br />")
document.write(arr.sort(sortNumber))
</script>
</body>
</html>
数组中数字排序
