Question

I am making XMLHttpRequest to call Google search API URL. And on getting the response I want to call another result Handling function. But I also want to pass the parameter to it.

request = new XMLHttpRequest();

if(request) {
    var url = "http://localhost:8080/final_project/SearchService";
    url += "?user_query=" + getQueryString();

    request.onreadystatechange = handleSearchResult;
    request.open("GET", url, true);
    request.send(null);
}

Here handleSearchResult is resultHandler and I want to pass parameter to this function. But if I do so the function gets called directly.

What can be done to solve this problem?

Answer 1

Surround it using a closure:

request.onreadystatechange = function() {
  handleSearchResult(yourParameter);
}