JavaScript中數組的合并以及排序實現示例

2024-05-06 16:24:51

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這篇文章主要介紹了JavaScript中數組的合并以及排序實現示例,是JavaScript入門學習中的基礎知識,需要的朋友可以參考下

合并兩個數組 - concat()

源代碼:

<!DOCTYPE html>

<html>

<body>

?

<p id="demo">點擊按鈕合并數組。</p>

?

<button onclick="myFunction()">點我</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>

測試結果:

Cecilie,Lone,Emil,Tobias,Linus

合并三個數組 - concat()

源代碼:

<!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>

測試結果:

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

數組排序（按字母順序升序）- sort()

源代碼:

<!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>

測試結果:

Apple,Banana,Mango,Orange

數字排序（按數字順序升序）- sort()

源代碼:

<!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>

測試結果:

1,5,10,25,40,100

數字排序（按數字順序降序）- sort()

源代碼:

<!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>

測試結果:

100,40,25,10,5,1

將一個數組中的元素的順序反轉排序 - reverse()

源代碼:

<!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>