Reusing AJAX function multiple times

Question

Currently my AJAX call is set up as such so that when a comma keyup is detected, the AJAX call fires:

$("#selector").on("keyup", function(e) {
    if (e.which === 188) {

        var search = $(this).val();

        function searchTag() {
            return $.ajax({
                cache:      false,
                url:        url,
                dataType:   "json",
                type:       "post",
                data:       {search: search}
            });             
        }

        searchTag().done(function(data) {
            //Success
        });
    }
});

I want to reuse the AJAX call as part of another event listener later in my code:

$("body").on("click", ".tag", function () {
    searchTag();
});

Without rewriting the entire call, how do I make the function independent so that it can be used in both scenarios?

Answer 1

Move the function outside:

function searchTag(data) {
    var url = "yoururl";
    return $.ajax({
        cache:      false,
        url:        url,
        dataType:   "json",
        type:       "post",
        data:       data
    });             
}

$("#selector").on("keyup", function(e) {
    if (e.which === 188) {

        var search = {search: $(this).val()};


        searchTag(search).done(function(data) {
            //Success
        });
    }
});

$("body").on("click", ".tag", function () {
    searchTag({});
});

Answer 2

remove the function from the event, and add as input the search value and url as input:

function searchTag(searchVal, url) {
            return $.ajax({
                cache:      false,
                url:        url,
                dataType:   "json",
                type:       "post",
                data:       {search: searchVal}
            });             
        }

$("body").on("click", ".tag", function () {
    var searchVal = $(this).val();
    var url = document.URL; //use any url here
    searchTag(searchVal, url);
});

you could even use a callback:

function searchTag(searchVal, url, callbck) {
            return $.ajax({
                cache:      false,
                url:        url,
                dataType:   "json",
                type:       "post",
                data:       {search: searchVal}
            }).done(function(){
              callbck();
            });             
        }

$("body").on("click", ".tag", function () {
    var searchVal = $(this).val();
    var url = document.URL; //use any url here
    searchTag(searchVal, url, function(){
        //do something here..
    });
});

Answer 3

What about this:

///tag -> tag to search
///cb  -> callback to executed on success
var searchTag = function(tag, cb) {
    var url = "http://example.com";
    var request = $.ajax({
        cache:      false,
        url:        url,
        dataType:   "json",
        type:       "post",
        data:       {search: tag}
    });          
    request.done(cb);
}

$("#selector").on("keyup", function(e) {
    if (e.which === 188) { 
        var search = $(this).val();
        searchTag(search, function(data) {
            //Success
        });
    }
});

$("body").on("click", ".tag", function () {
     //I don't actually know where the tag to search is stored
     var search = $(this).html();
     searchTag(search);
});