代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
var arr=[];
console.log(typeof (arr));
var arr1=[1,2,3,4,5];
console.log(arr1);
console.log("arr1的元素个数是："+arr1.length);
arr1.length=0;
console.log(arr1);
var arr2=["lin1","lin2","lin3","lin4"];
console.log(arr2[0]);
for(var i=0;i<arr2.length;i++){
console.log(arr2[i]);
}
arr2[0]="linzi1";
console.log(arr2[0]);
arr2[4]="lin5";
console.log(arr2);
console.log(arr2.pop());
console.log(arr2);
arr2.push("linzi4");
console.log(arr2);
arr2.splice(0,2,'xiaolinzi');
console.log(arr2);
</script>
</body>
</html>