How to force keyboard with numbers in mobile website in Android

Question

I have a mobile website and it has some HTML input elements in it, like this:

Answer 1

Some browsers igoners sending leading zero to the server when the input type is "number". So I use a mixing of jquery and html to load a numeric keypad and also make sure that the value is sent as a text not as a number:

$(document).ready(function(){
$(".numberonly").focus(function(){$(this).attr("type","number")});
$(".numberonly").blur(function(){$(this).attr("type","text")});
})