這篇文章主要介紹了JavaScript中將數組元素轉換為字符串的方法,是JS入門學習中的基礎知識,需要的朋友可以參考下
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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