舉例說明JavaScript中將陣列元素轉換為字串的方法_基礎知識
- WBOY原創
- 2016-05-16 15:35:061151瀏覽
先來看看從一個陣列中選擇元素的方法slice()：
原始碼:
<!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
我們可以用陣列的元素組成字串，相關的join()方法使用範例：
原始碼:
<!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
直接轉換陣列到字串則可以用toString()方法：
原始碼:
<!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>
測試結果:
Banana,Orange,Apple,Mango
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