console 命令行工具 X clear

console

window.onload=function(){
   
    var oP=document.createElement("p")
    var otext=document.createTextNode("hi")
    oP.appendChild(otext)
    document.body.appendChild(oP)

     var odiv=document.createElement("div")
     odiv.innerHTML="<p>hhh</p><p> second innerHTML</p>"
     document.body.appendChild(odiv)

    

    var input1=document.createElement("input")
    input1.id="btn"
    input1.type="button"
    input1.value="按钮1"
    document.body.appendChild(input1)

    var div3=document.createElement("div")
    div3.innerHTML='<input id="btn"type="button" value="按钮2"/>'
    document.body.appendChild(div3)
document.body.innerHTML="<div><p>Hi, I'm in body</p><p>Hi, I'm second line</p></div>" 


}

<!DOCTYPE html> 
<html>
    <head>
        <meta charset="utf-8" />
        <title></title>
        <style type="text/css">
            
        </style>
        <script>
        
        </script>
    </head>
    <body>
    </body>
</html>