html字符串转换html dom对象

let html="
";
html+=text.toLowerCase();
html+=" "+num+"";
html+="
";

var parser = new DOMParser();
var doc=parser.parseFromString(html,"text/html");
console.log(doc.body,'doc');   //就是我们所需要的dom对象

document.getElementById("divFrame").appendChild(doc.body);