这篇文章主要介绍了JavaScript中将数组元素转换为字符串的方法,是JS入门学习中的基础知识,需要的朋友可以参考下
首先来看一下从一个数组中选择元素的方法slice():
源代码:
- <!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>
测试结果:
- Orange,Lemon
我们可以用数组的元素组成字符串,相关的join()方法使用例子:
源代码:
- <!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>
测试结果:
- Banana,Orange,Apple,Mango
直接转换数组到字符串则可以用toString()方法:
源代码:
- <!DOCTYPE html>
- <html>
- <body>
-
- <p id="demo">点击按钮将数组转为字符串并返回。</p>
-
- <button onclick="myFunction()">点我</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>
测试结果:
- Banana,Orange,Apple,Mango
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