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JavaScript中數組的合併以及排序實例詳解

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發布： 2017-07-07 15:05:51

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這篇文章主要介紹了JavaScript中陣列的合併以及排序實作範例,是JavaScript入門學習中的基礎知識,需要的朋友可以參考下

合併兩個陣列- concat()
原始碼:

<!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>

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測試結果:

Cecilie,Lone,Emil,Tobias,Linus

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合併三個陣列- concat()
原始碼:

<!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>

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測試結果:

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

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#陣列排序（按字母順序升序）- sort()
#原始碼:

<!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>

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測試結果:

Apple,Banana,Mango,Orange

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數字排序（以數字順序升序）- sort()
原始碼:

<!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>

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測試結果:

1,5,10,25,40,100

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數字排序（以數字順序降序）- sort()
原始碼:

<!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>

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測試結果:

100,40,25,10,5,1

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將一個陣列中的元素的順序反轉排序- reverse()
#原始碼:

<!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>

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測試結果: