首先來看一下從一個數組中選擇元素的方法slice()：
源代碼:
<!DOCTYPE html><html><body><p id="demo">Click the button to extract the second and the third elements from the array.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"];var citrus = fruits.slice(1,3);var x=document.getElementById("demo");x.innerHTML=citrus;}</script></body></html> 測試結果:
Orange,Lemon
我們可以用數組的元素組成字符串，相關的join()方法使用例子：
源代碼:
<!DOCTYPE html><html><body><p id="demo">Click the button to join the array elements into a string.</p><button onclick="myFunction()">Try it</button><script>function myFunction(){var fruits = ["Banana", "Orange", "Apple", "Mango"];var x=document.getElementById("demo");x.innerHTML=fruits.join();}</script></body></html> 測試結果：
Banana,Orange,Apple,Mango
直接轉換數組到字符串則可以用toString()方法：
源代碼:
<!DOCTYPE html><html><body><p id="demo">點擊按鈕將數組轉為字符串并返回。</p><button onclick="myFunction()">點我</button><script>function myFunction(){ var fruits = ["Banana", "Orange", "Apple", "Mango"]; var str = fruits.toString(); var x=document.getElementById("demo"); x.innerHTML= str;}</script></body></html>測試結果:
Banana,Orange,Apple,Mango
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