getJsonSecret.js

$(document).ready(function(){
	    function resultCb(res){
    	console.log(res);
        	res.sort(function(a, b){
				if(a < b) return -1;
				if(a > b) return 1;
				return 0;
			});
			$.each(res,function(title){
				$(".news-body").append("<div>" + title+"</div");
			}); 
    }
    $(".button").click(function(){
        var input = $(".secret").val();
        var res=[];
        
        $.getJSON("key.json", function(keyjson) {
		 for(input in keyjson )
        	{
        		$.getJSON("secret_json/"+input+".json", function(json) {
        			res.push(json["news_title"]);
        			if(res.length === 75) resultCb(res);
				});
        	}
		});
    
    });
});