​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>JavaScript 字符串</h1>
​
<h2>concat() 方法</h2>
​
<p>concat() 方法连接两个或多个字符串。</p>
​
<p>连接 "Hello" 和 "Kitty"，中间有空格：</p>
​
<p id="demo"></p>
​
<script>
let text1 = "Hello";
let text2 = "world!";
let result = text1.concat(" ", text2);
​
document.getElementById("demo").innerHTML = result;
</script>
​
</body>
​
</html>
​