Get userinput in JavaScript [closed]

Question

I want to get user inputs using the tag in HTML and not the prompt function in JavaScript.

I also don't want to have to use another language on top of this like php.

Edit Something like this would be desirable

<form action="demo_form.asp">
  First name: <input type="text" name="fname"><br>
  <input type="submit" value="Submit">
</form>

but without using a .asp

Answer 1

Create an input tag with id attribute

<input type="text" id="a" name="b" />

in javascript, you can get the value of an input field via its id

var x = document.getElementById('a').value;

Answer 2

<input type="text" id="input1" />
<button onclick="myJsFunction()"></button>
<script type="text/javascript">
 function myJsFunction(){
    var text=document.getElementById('input1').value;
 }
</script>