var hege = ["Cecilie", "Lone"];
var stale = ["Emil", "Tobias", "Linus"];
var children = hege.concat(stale);
document.write(children);
2、用数组的元素组成字符串 - join()
function myFunction(){
var fruits = ["Banana", "Orange", "Apple", "Mango"];
var x=document.getElementById("demo");
x.innerHTML=fruits.join();
}
3、删除数组的最后一个元素 - pop()
var fruits = ["Banana", "Orange", "Apple", "Mango"];
function myFunction(){
fruits.pop();
var x=document.getElementById("demo");
x.innerHTML=fruits;
}
4、数组的末尾添加新的元素 - push()
var fruits = ["Banana", "Orange", "Apple", "Mango"];
function myFunction(){
fruits.push("Kiwi")
var x=document.getElementById("demo");
x.innerHTML=fruits;
}
5、将一个数组中的元素的顺序反转排序 - reverse()
var fruits = ["Banana", "Orange", "Apple", "Mango"];
function myFunction(){
fruits.reverse();
var x=document.getElementById("demo");
x.innerHTML=fruits;
}
6、删除数组的第一个元素 - shift()
var fruits = ["Banana", "Orange", "Apple", "Mango"];
function myFunction(){
var delell = fruits.shift();
var x=document.getElementById("demo");
x.innerHTML= '删除后数组为：' + fruits;
document.getElementById("demo2").innerHTML= '删除的元素是：' + delell;
}
7、从一个数组中选择元素 - slice()
function myFunction(){
var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];
var citrus = fruits.slice(1,3);
var x=document.getElementById("demo");
x.innerHTML=citrus;
}
8、数组排序（按字母顺序升序）- sort()
function myFunction(){
var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.sort();
var x=document.getElementById("demo");
x.innerHTML=fruits;
}
8、在数组的第2位置添加一个元素 - splice()
function myFunction(){
var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.splice(2,0,"Lemon","Kiwi");
var x=document.getElementById("demo");
x.innerHTML=fruits;
}
9、转换数组到字符串 -toString()
function myFunction(){
var fruits = ["Banana", "Orange", "Apple", "Mango"];
var str = fruits.toString();
var x=document.getElementById("demo");
x.innerHTML= str;
}
10、在数组的开头添加新元素 - unshift()
function myFunction(){
var fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.unshift("Lemon","Pineapple");
var x=document.getElementById("demo");
x.innerHTML=fruits;
}
11、如何使用 max() 来返回两个给定的数中的较大的数。
function myFunction(){
document.getElementById("demo").innerHTML=Math.max(5,10);
}
12、setInterval() - 间隔指定的毫秒数不停地执行指定的代码。
var myVar=setInterval(function(){myTimer()},1000);
function myTimer(){
var d=new Date();
var t=d.toLocaleTimeString();
document.getElementById("demo").innerHTML=t;
}
function myStopFunction(){
clearInterval(myVar);
}
setTimeout() - 在指定的毫秒数后执行指定代码。
var myVar;
function myFunction(){
myVar=setTimeout(function(){alert("Hello")},3000);
}
function myStopFunction(){
clearTimeout(myVar);
}
13、Prototype
Prototype 是一种库，提供用于执行常见 web 任务的简单 API。
API 是应用程序编程接口（Application Programming Interface）的缩写。它是包含属性和方法的库，用于操作 HTML DOM。