how can I controlling in (html element ) by (js)

Answer 1

Stop Ana Top you should have made your question clearer.
try this::
document.getElementById("a").oninput=
function(){
document.getElementById("b").innerHTML=this.value;
}

Answer 2

what do you mean for "controlling"? You have more way to get DOM element references (with document.getElementById, .getElementsByTagName, .querySelector etc)

Answer 3

<input type="button" id="a" value="1">
<input type="text" id="b" >

I wanna if i click in a
write these value in b

Answer 4

See here https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Client-side_web_APIs/Manipulating_documents

P.S. Bookmarks this site... its most useful

Answer 5

thanks