举例讲解JavaScript中将数组元素转换为字符串的方法

作者：bea

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</butt

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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举例讲解JavaScript中将数组元素转换为字符串的方法

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