I'm new to Sharepoint and jsom and i'm trying to build up a search using JSOM.

and i tried below code snippts 

I FOLLOWED FOLLWING BLOG
http://www.dotnetmafia.com/blogs/dotnettipoftheday/archive/2013/04/18/how-to-query-search-with-the-sharepoint-2013-javascript-client-object-model.aspx

Is there any search.js file i should linked? if so what would be the link??
However these are the links i added


1st step: Create a page and added following HTML


It has search button : #searchButton and text box : #searchTextBox


i linked jquery and abc.js file succesfully

and added this JS code to abc.js file


'use strict';
 
var results;
 
var context = SP.ClientContext.get_current();
var user = context.get_web().get_currentUser();
 

$(document).ready(function () {
 
    $("#searchButton").click(function () {

       alert('check1');
        var keywordQuery = new Microsoft.SharePoint.Client.Search.Query.KeywordQuery(context);
        keywordQuery.set_queryText($("#searchTextBox").val());

       alert('check2');
 
        var searchExecutor = new Microsoft.SharePoint.Client.Search.Query.SearchExecutor(context);
        results = searchExecutor.executeQuery(keywordQuery);
 
        context.executeQueryAsync(onQuerySuccess, onQueryFail)
    });
});
 
 
function onQuerySuccess() {
    $("#resultsDiv").append('<table>');
 
    $.each(results.m_value.ResultTables[0].ResultRows, function () {
        $("#resultsDiv").append('<tr>');
        $("#resultsDiv").append('<td>' + this.Title + '</td>');
        $("#resultsDiv").append('<td>' + this.Author + '</td>');
        $("#resultsDiv").append('<td>' + this.Write + '</td>');
        $("#resultsDiv").append('<td>' + this.Path + '</td>');
        $("#resultsDiv").append('</tr>');
    });
 
    $("#resultsDiv").append('</table>');
}
 
function onQueryFail(sender, args) {
    alert('Query failed. Error:' + args.get_message());
}



In this code check1 alert is coming but not the check2 alert.. Whats the wrong with this..?

Please help me


Thank you very very much