How can I submit value to javascript without submitting onclick [closed]

Answer 1

Is really simple>

    <form action="url.php">
<input type="text" value="some value" name="name_input" />
    </form>

Only you can press ENTER in "name_input" field for send the form data

Answer 2

You can call myFunction(), when demo loses the focus

$('#demo').blur(myFunction);

JSFiddle

and/or when the user presses return

$('#demo').keypress(function(e) {
    if (e.keyCode == 13)
        myFunction();
});

JSFiddle

Answer 3

The most simple way to do this is using jquery

function myfunction()
{
    var val = document.getElementById("demo").value;

    $.post( "test.php", { value: val})
     .done(function( data ) {
      alert( "Value submited");
    });
 }

Call myfunction() on blur event. like this

<input id="demo" type="text" value="1" onblue="myfunction()">

This will send your value to test.php page and you can do the rest. If you want to avoid jquery then do it with simple AJAX with javascript directly.