Printing a JS variable in a value=“” attribute

Question

I\'m trying to implement a Paypal button with a dynamic value. When I enter, for example, value=\"300.00\", the button works fine.

However, if I do it my way, the button

Answer 1

In javascript:

document.write('')

Or better yet

var div = document.createElement('div');
div.innerHTML = '';
document.body.appendChild(div);

DEMO