I am having some issues with a class project. Every thing was working fine and dandy up until the current part we are on. Basically, we had to add prototypes and cases to move to each location. Now my code will not work, and the teacher is about as helpful as a pet rock. I have two parts to my code, the html (which has part of the code including items and such) and the .js file that includes the locations.
I have created a repository on Github so it is easily accessible to all who want to help. At this point it is too late to submit to my professor, but I am curious on what I did wrong.
https://github.com/EmeraldX/Project-Help/tree/master
The main and directions.js are the files that I am currently working with.
Thanks!
Update: Okay, so it's still not working, and when I use Chrome's console it just tells me that:
function updateDisplay( message ) {
var textArea = document.getElementById("introduction");
textArea.value = message + "\n\n" + textArea.value;
Cannot read property 'value' of null
I tried opening your html page and js using firefox, and used the firebug consol to see if anything was wrong.
It looks like you have an ) missing in your js:
SyntaxError: missing ) after argument list directions.js:7:145
And it was right:
locations[2] = new Location(2,"Lake","A large lake that is formed by a river flowing from the East.",
new Item(1,"Fish","An old rotting fish.");
is missing a ')'
After correcting it, it appear that you miss this ) line 7, 9, 13 and 14.
Then a new error pop up:
ReferenceError: Item is not defined directions.js:7:2
This can be corrected by calling your direction.js AFTER you js script in main.html.
Hope it can help
Related
first of, I'm a total, utter newbie. I have to work with this, because nobody in my office is even halfway computer literate. The person who wrote the initial script left the company and we can't get ahold of him anymore.
Now, the problem at hand:
I have a script that's a "look for words and highlight them in garish colour" affair. Now I tried to modify it so that it only runs in a
This is the code:
function Find(node){
if(!node)
node=document.getElementsByTagName('div class="listing__top-info"')[0];
this.rootNode=node;
this.hits=0;
this.selected=0;
this.selection=[];
this.build();
Yet when I run this code, I get this in the log:
"TypeError: document.getElementsByClassName(...)[1] is undefined" (I also don't understand why the [0] gets changed to a [1] here.)
The script is already set to run at document-idle.
The version of the script that works, is set to look for "body", and then marks/highlights as intended.
What am I missing?
Try using querySelector instead:
node = document.querySelector('div.listing__top-info');
I am trying to load sounds through the SoundJS sound registration, and getting the following error:
createjs.js:15 Uncaught Error: Type not recognized.
I figure that the soundjs library is having issues either locating my files or having trouble with the file extensions, but I am using .ogg, which is inline with all the examples I've seen.
Here is my code:
createjs.Sound.alternateExtensions = ["mp3", "ogg"];
createjs.Sound.on("fileload", function(event) {
console.log(event);
}, this);
for (var i = 0; i < soundManifest.length; i++) {
soundManifest[i].loaded = false;
console.log("loading " + soundManifest[i].src);
createjs.Sound.registerSound(soundManifest[i].src, soundManifest[i].id)
}
soundManifest is an array of objects with a source item giving the path to the .ogg files, and an id. I've double and triple checked the path names, so pretty sure that's not it. Any ideas? I am developing on Chrome.
Thanks for posting a github link. It was helpful. Fortunately, I have a super simple answer for you.
Rename the "Object" class you made in Main.js, and you should be good to go.
-- The long answer --
I tossed a breakpoint the error that is thrown, and it showed that when SoundJS tries to create a LoadItem, it fails. This is because it should be treating the LoadItem it receives as an Object, but the line below is failing:
} else if (value instanceof Object && value.src) {
// This code should be executed
}
At first I thought there was a bug in SoundJS that we had somehow missed in the last 2 years, but closer inspection showed that object prototypes in your application are messed up. If you open any browser window, and hit the console, this will return true:
({}) instanceof Object
// true
However while running your app, it returns false.
The issue became clear when I removed all your other classes other than CreateJS and main, and then tried this:
new Object();
// Throws an error that includes info about "Victor"
In main.js, you are defining an "Object" class, which extends a CreateJS Shape. It is global because there is no method closure around the code, so it overwrites the global Object class/prototype.
The reason I included this explanation, is because I couldn't figure out what was going on until I had my steps to show that prototypes were broken in the app mostly written out before the reason dawned on me. I thought it might be of some interest :)
I have been looking for a solution to below described issue for a few days but I couldn't find anything helping...
I am using Ace editor on 6 different DIVs on a webpage (so I have 6 editors).
Basically everything works fine, I am able to create them, set them up (language mode, soft tabs, etc.) and manage their content once the user is done.
BUT I keep having the same error message in the console "Uncaught ReferenceError: window is not defined". I get it 6 times, 1 per Ace editor on the page.
Here is the JS I am using. divIdsArray is an array containing the 6 DIVs Ids.
function initAceEditorFields()
{
$(document).ready(function(){
for (var i = 0 ; i < divIdsArray.length ; i++){
var l_arr_splitted = divIdsArray[i].split("_");
var l_str_code = l_arr_splitted[2];//Each div id contains either "js" or "html" which i am retrieving here
var l_ace_editor = ace.edit(divIdsArray[i]);
l_ace_editor.setShowPrintMargin(false);
l_ace_editor.getSession().setUseSoftTabs(false);
l_ace_editor.getSession().setTabSize(4);
l_ace_editor.$blockScrolling = Infinity;
if(l_str_code == "js"){
l_ace_editor.getSession().setMode("ace/mode/javascript");
}else{
l_ace_editor.getSession().setMode("ace/mode/html");
}
}
});
}
I am loading the files: ace.js, mode-javascript.js and mode-html.js from the ace package.
I have tried with ace editor builds: "src-min" and "src-min-noconflict" from the github repo and I tested with Chrome, Mozilla and MS Edge but I always get the same error message.
It is strange as everything seems to be working fine (or at least as I want it too). I just don't want to leave these messages in the console when I go to production.
Any help will be greatly appreciated.
Thank you!
Your ace editor must be using web workers somewhere, then some function called inside a web worker is trying to access "window". The code you've shown us has no references to window. Scrutinize your other interactions with ace to see if you ever pass in a function that references "window" or jquery, or any other dependency in the global scope. If not, then the error in the console is outside your control I suspect.
I work on an app with a javascript/html front-end and a back-end REST service. I mostly work on the back end service, but I'm attempting to add javascript unit tests to the build. I had someone help me with the javascript testing framework setup, using phantomjs, qunit, and jstestrunner, all referenced from Maven.
I wrote a trivial unit test for a module (we'll call it "data.daily.js") that begins like this:
Data.Daily = new Function();
Data.Daily.prototype = {
Just to be clear, this code runs every day in production, and appears to work fine in all major browsers (FF, IE, and Chrome).
The test looks like this:
requirejs.config({ shim: { 'data.daily': ['config'] } });
require(['data.daily'], function() {
'use strict';
module('data.daily');
test('data.daily.test.initialize', function() {
var dataDaily = new Data.Daily();
dataDaily.initialize(Config.AJAX_DAILY_DATA_BASE_URL, Config.MOCKDATA_AJAX_DAILY_DATA_BASE_URL);
deepEqual(dataDaily.getData(), {}, "object is \"" + JSON.stringify(dataDaily.getData()) + "\", but it should be empty object");
});
});
When I run this test, it fails like this:
ReferenceError: Can't find variable: Data, source: http://localhost:9080/data.daily.js:5
[data.daily] data.daily.test.initialize: failed: 1 passed: 0
Died on test #1 at http://localhost:9080/js/qunit.js:425
at http://localhost:9080/js/data.daily.test.js:17
at http://localhost:9080/js/require.js:1682
at http://localhost:9080/js/require.js:983
at http://localhost:9080/js/require.js:1194
at http://localhost:9080/js/require.js:129
at http://localhost:9080/js/require.js:1237
at each (http://localhost:9080/js/require.js:58)
at http://localhost:9080/js/require.js:1238
at http://localhost:9080/js/require.js:1043
at http://localhost:9080/js/require.js:1224
at http://localhost:9080/js/require.js:882
at callGetModule (http://localhost:9080/js/require.js:1249)
at http://localhost:9080/js/require.js:1578
at http://localhost:9080/js/require.js:1703: Can't find variable: Data, source: ReferenceError: Can't find variable: Data
The only way I can find to get this test working is to change "data.daily.js" in this way, adding a line before the existing lines:
var Data = {};
Data.Daily = new Function();
Data.Daily.prototype = {
Now I have to say that this looks logical to me, but the fact remains that the existing code works fine in all the major browsers. This code only started failing when referenced from the test.
Note that I also tried changing the test script instead, adding the "var Data = {}" line before the "var dataDaily = new Data.Daily()" line, but that had no effect.
So, can anyone explain what is going on here? Why does the original code work if it fails in the test. Is there something funky about how "require.js" works that makes this happen? Why didn't the test work by adding the line in the test, instead of the CUT (code under test)?
Ok, I've managed to resolve this.
The assignment is actually present in the existing production code, I just didn't think to look in ".html" files for it before. When I didn't find it in ".js" files, I thought something else was going on.
The reason it didn't work to put the line in the test script instead was because I was putting the line in the wrong place. The error actually occurs at configuration time, not when the test itself is executed, so the assignment had to be before the "requirejs.config()" call. Now the test works, without having to modify the CUT.
In my cappuccino app, I am reading from an RoR backend via JSON and putting the results onto a list. When the app first loads everything is fine, but when I edit an item (and write the edit to the database) there is an error generated when the items list is refreshed.
The error is CPRangeException: -[_CPJavaScriptArray objectAtIndex:]: index (-1) beyond bounds (3).
I get this error even if I edit an item without making any actual changes. The JSON string received by the app remains exactly the same in this case, there are no items added or removed and therefore the array should not be written to out of bounds.
Here is my code:
- (void)connection:(CPRURLConnection)connection didReceiveData:(CPString)data
{
if(connection === listConnection)
{
var results = JSON.parse(data) ;
var posts = [Post initFromJSONObjects:results];
[postListView setContent:posts] ;
// My error occurs at the above line
[postListView setSelectionIndexes:[[CPIndexSet alloc] initWithIndex:0]] ;
}
}
I am not sure if it's an error with my code or if it's some kind of inconsistency with the cappuccino framework. Does anybody know what I can do to fix this?
The rest of the code can be found here
You should probably simply log what's in posts before setting it. CPLog.info('posts: ' + posts); should work, or console.log(posts). Next you can set a 'break on uncaught exception' debug point in Chrome or Safari to stop at the actual error you are seeing. Make sure you run your app using index-debug.html so that you get full method names. Then it should be an easy matter to look at the calling stack to see where things are going wrong. There's a lot of information on debugging a Cappuccino app here.