ES6支持模板字符串，简单写法如下
//html界面 <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> </head> <body> <center> <h1 style="color: red;">测试!!!</h1> </center> <div id="ceshi"> </div> <script type="text/javascript" src="test.js" ></script> </body> </html>
//JS var age = 12 ; var name = '小明' ; var ceshi = document.getElementById('ceshi'); ceshi.innerHTML = ` 我的名字是<h1>${name}</h1>,我今年的年龄是${age-1}周岁，虚岁是${age} `;
