Question

How to change the value of <input id="myinput">?

sample:

value - page.html
will be - page\.html

value - abc.php
will be - abc\.php

Answer 1

http://api.jquery.com/val/#val2

$("#elm").val("new value");

and replace contents like this:

var oldval = $("#elm").val();
oldval = oldval.replace(/\./g,"\\.")
$("#elm").val(oldval);