[Solved] take html input from user and out modified html back to the user

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Consider using a prompt like so:

<html>


  <script type="text/javascript">
        function getValue(){
           var retVal = prompt("Enter your name : ", "your name here");

  // You can do something like convert it all to lowercase here:
           document.write("You have entered : " + retVal.toLowerCase());
        }
  </script>

Click the following button to see the result:

  <form>
     <input type="button" value="Click Me" onclick="getValue();" />
  </form>

Thus returning modified user input to the user without posting anything or submitting a form. This is just a simple example, but you can take this and apply it to an input field with a button by adding

onclick="functionToDoSomething()"

as an attribute to the button, and having the function get and alter the value of the input field.

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solved take html input from user and out modified html back to the user