javascript - How to add Elements to DOM -

i need function creates element , adds text element , adds new element location in dom. noob this. find function don't know how automaticaly specify location can call function , example specify third argument element want append new element.

function appendelement (elemnode,textnode) {             var element = document.createelement(elemnode);             var text = document.createtextnode(textnode);             element.appendchild(text);             document.body.appendchild(element); } appendelement("b","lorem"); 

here's way in 1 line:

function appendelement (elemnode, textcontent, parent) {      parent.appendchild(document.createelement(elemnode)).textcontent = textcontent;  }    appendelement("b","lorem", document.getelementbyid("container"));

div { background-color: aqua }

<div id="container"></div>