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JavaScript中数组的合并以及排序实现示例

2019-11-20 11:24:30
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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

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