<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script>
var my_array_1 = new Array(1,3,5,6,7,true)
console.log(my_array_1)
var my_array_2 = [7,8,9,0,'t']
console.log(my_array_2)
console.log(my_array_2.length,my_array_1.length)
console.log(my_array_1[1])
my_array_1.push('啦啦')
console.log('my_array_1 添加一个元素后:',my_array_1)
my_array_2.pop();
console.log(my_array_2);
my_array_1.splice(0,1)
my_array_1.splice(0,1,'呵呵')
console.log(my_array_1)
</script>
</head>
<body>
</body>
</html>