<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>常用的方法</title>
</head>
<body>
<script type="text/javascript">
var arr = [1,23,100,4,5,6,76];
var arr2 = ['a','b','c','d'];
var arr3 = ['!','@#','#','$#'];
//连接数组
var res = arr.concat(arr2, arr3);
//p拼接字符串
var res = arr.join('---');
//数组反转
// arr.reverse();
//数组元素的截取操作
// var res = arr.slice(2, 6);
//数组的排序
var res = arr.sort(function(a,b){
if(a>b){
return -1;
} else if(a==b) {
return 0;
} else {
return 1;
}
});
console.log(res);
</script>
</body>
</html>
