信鸽网

JavaScript中数组的合并以及排序实现示例

  作者：bea

合并两个数组 - concat() 源代码: <!DOCTYPE html><html><body>​<p id="demo">点击按钮合并数组。</p>​<button onclick="myFunction()">点我</button>​<script>function myFunction(){var hege = ["Cecilie", "Lone"];var stal

合并两个数组 - concat()
源代码:




<!DOCTYPE html>

<html>

<body>

​

<p id="demo">点击按钮合并数组。</p>

​

<button onclick="myFunction()">点我</button>

​

<script>

function myFunction()

{

var hege = ["Cecilie", "Lone"];

var stale = ["Emil", "Tobias", "Linus"];

var children = hege.concat(stale);

var x=document.getElementById("demo");

x.innerHTML=children;

}

</script>

​

</body>

</html>


测试结果:




Cecilie,Lone,Emil,Tobias,Linus



合并三个数组 - concat()
源代码:




<!DOCTYPE html>

<html>

<body>



<script>



var parents = ["Jani", "Tove"];

var brothers = ["Stale", "Kai Jim", "Borge"];

var children = ["Cecilie", "Lone"];

var family = parents.concat(brothers, children);

document.write(family);



</script>



</body>

</html>


测试结果:




Jani,Tove,Stale,Kai Jim,Borge,Cecilie,Lone



数组排序（按字母顺序升序）- sort()
源代码:




<!DOCTYPE html>

<html>

<body>

​

<p id="demo">Click the button to sort the array.</p>

​

<button onclick="myFunction()">Try it</button>

​

<script>

function myFunction()

{

var fruits = ["Banana", "Orange", "Apple", "Mango"];

fruits.sort();

var x=document.getElementById("demo");

x.innerHTML=fruits;

}

</script>

​

</body>

</html>


测试结果:




Apple,Banana,Mango,Orange


数字排序（按数字顺序升序）- sort()
源代码:




<!DOCTYPE html>

<html>

<body>

​

<p id="demo">Click the button to sort the array.</p>

​

<button onclick="myFunction()">Try it</button>

​

<script>

function myFunction()

{

var points = [40,100,1,5,25,10];

points.sort(function(a,b){return a-b});

var x=document.getElementById("demo");

x.innerHTML=points;

}

</script>

​

</body>

</html>


测试结果:




1,5,10,25,40,100


数字排序（按数字顺序降序）- sort()
源代码:




<!DOCTYPE html>

<html>

<body>

​

<p id="demo">Click the button to sort the array.</p>

​

<button onclick="myFunction()">Try it</button>

​

<script>

function myFunction()

{

var points = [40,100,1,5,25,10];

points.sort(function(a,b){return b-a});

var x=document.getElementById("demo");

x.innerHTML=points;

}

</script>

​

</body>

</html>


测试结果:




100,40,25,10,5,1



将一个数组中的元素的顺序反转排序 - reverse()
源代码:




<!DOCTYPE html>

<html>

<body>

​

<p id="demo">Click the button to reverse the order of the elements in the array.</p>

​

<button onclick="myFunction()">Try it</button>

​

<script>

var fruits = ["Banana", "Orange", "Apple", "Mango"];

​

function myFunction()

{

fruits.reverse();

var x=document.getElementById("demo");

x.innerHTML=fruits;

}

</script>

​

</body>

</html>


测试结果:




Mango,Apple,Orange,Banana





有用  |  无用

猜你喜欢

您可能感兴趣的文章: