A computer-implemented method for facilitating auto-completion of user data input in a web page. The method includes receiving, during execution time of the web page, first user data input in a first data input field of the web page. The method also includes analyzing, during the execution time, the first user data input to ascertain among plurality of dictionary objects a first dictionary object. The first dictionary object represents a dictionary object from which candidate matches against the first user data input would be presented to a user of the web page. The plurality of dictionary objects are associated with the first data input field during build time of the web page. The method additionally includes matching at least a portion of the first user data input against members of the first dictionary object to obtain a first list of candidate matches. The method further includes presenting the first list of candidate matches to the user of the web page.