JavaScript中數組的合并以及排序實現示例

2019-11-20 11:24:30

字體：大中小

來源：轉載

供稿：網友

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>

測試結果: