简单教程
提交运行
代码编辑器:
<p id="demo">单击按钮连接2个字符串形成一个新的字符串</p> <button onclick="myFunction()">点我</button> <script> function myFunction(){ var txt1 = "Hello "; var txt2 = "world!"; var txt3=" Have a nice day!"; var n=txt1.concat(txt2,txt3); document.getElementById("demo").innerHTML=n; } </script>
运行结果: