In my application I have a javascript function like below.
var params = {};
function getMethod(art) {
if (art == 'artwork') {
params['type'] = 'paper art';
}
params['medium'] = 'canvas';
params['entity'] = 'paper';
}
This function is working fine in Firefox. But Its failing in IE and Chrome.
Its breaking on params['type']
giving error params is undefined.
Any idea what mistake I am doing here.
here is how i would use it:
var params = {};
function getMethod(art) {
if (art == 'artwork') {
params.type = 'paper art';
}
params.medium = 'canvas';
params.entity = 'paper';
}
// ... later
getMethod("not art");
// check if it is defined before using it
if (params.type && params.type == 'artwork') {
// do artwork stuff
}
Related
can somebody help me out a little? I am a little stuck.
I am trying to write a signaling process with ajax and a database involved (this is just for learning the basics of WebRTC for now).
I am receiving the SDP fine from the JSON-object as it seems, but then I always get an error "Cannot create answer in stable" when I try to create an answer in get_remote_offer() for pc_partner.
I am pretty sure it is something obvious, but I am pretty new to WebRTC and just can't see what.
I am using Firefox here and just trying to connect two instances of it (one in private mode, one in "normal" mode, but I am trying to make it work for remote users.
This is my code:
var opt;
var video_el_partner;
var video_el_local;
var pc_partner;
var pc_local;
var interval_gro;
var remote_offer_available = false;
var service_url = "https://xyz.de/webrtc";
var pwd = "xxx";
var signaling_url = "https://xyz.de/webrtc/sdp_transfer.php";
function init_stream(video_partner_id, video_local_id, allow_video, allow_audio){
if (location.protocol === 'https:') { // only possible for https!
pc_local = new RTCPeerConnection();
pc_partner = new RTCPeerConnection();
if(document.getElementById(video_partner_id) != null){
video_el_partner = document.getElementById(video_partner_id);
video_el_local = document.getElementById(video_local_id);
if(allow_video == null){
allow_video = true;
}
if(allow_audio == null){
allow_audio = true;
}
opt = { audio: allow_audio, video: allow_video };
if(typeof navigator != 'undefined' && typeof navigator.mediaDevices != 'undefined' && navigator.mediaDevices.getUserMedia != null){
navigator.mediaDevices.getUserMedia(opt).then (
function (this_stream){
// local video directly into video element:
video_el_local.srcObject = this_stream;
// remote one is more insteresting:
pc_local.addStream(this_stream);
pc_local.createOffer().then(
function (this_sdp) {
// sdp (session dependend protocol object) is now available... this would need to go to a server somehow now.
// they use socket.io for that... maybe I can use my own thing to do that?
pc_local.setLocalDescription(this_sdp);
var this_sdp_json = JSON.stringify(this_sdp)
var params_ins = "mode=insert_offer&sdp_con=" + this_sdp_json + "&pass=" + pwd + "&service_url=" + service_url;
ajax_request_simple (
signaling_url,
params_ins,
function (res_ins) {
// insert done. Lets read for another candidate.
console.log('Set Interval!');
interval_gro = window.setInterval('get_remote_offer();', 5000);
}
);
}
);
}
).catch(
function (error) {
console.log('Problem: ');
console.log(error);
}
);
} else {
console.log("navgiator or navigator.mediaDevices is not defined.");
}
}
} else {
console.log('init_stream(): We can only do anything like that on https-connections! Http is not supported by the browser!');
}
}
window.onload = function () {
document.getElementById('button_start_stream').onclick = function () {
init_stream('video_partner', 'video_local', true, false);
}
}
function is_json_str(str) {
try {
JSON.parse(str);
} catch (e) {
return false;
}
return true;
}
function get_remote_offer() {
var params_read = "mode=get_offer&pass=" + pwd + "&service_url=" + service_url;
ajax_request_simple (
signaling_url,
params_read,
function (res_read) {
// done.
if(is_json_str(res_read)){
// seems like we get one now.
// lets use that to connect and stream the video to the remote view.
var partner_offer = res_read;
partner_offer = JSON.parse(partner_offer);
// clear interval if found.
window.clearInterval(interval_gro);
console.log('Cleared Interval. Found!');
pc_local.setRemoteDescription(
new RTCSessionDescription(partner_offer), function(){
// video_el_partner.srcObject = event.stream;
pc_local.onicecandidate = function (e) {
if ( e.candidate != null ) {
pc_partner.addIceCandidate( new RTCIceCandidate(e.candidate) );
}
};
pc_partner.onicecandidate = function (e) {
if ( e.candidate != null ) {
pc_local.addIceCandidate( new RTCIceCandidate(e.candidate) );
}
};
pc_partner.createAnswer(
function (offer) {
pc_local.setRemoteDescription(offer);
pc_partner.setLocalDescription(offer);
}
);
// pc_local.ontrack = function (evt) {
// video_el_local.srcObject = evt.stream;
// };
pc_partner.ontrack = function (evt) {
video_el_partner.srcObject = evt.stream;
};
},
function(e) {
console.log("Problem while doing client-answer: ", e);
}
);
} else {
console.log("Can not parse: ");
console.log(res_read);
}
}
);
}
Sorry for the mix of promises and callbacks... I tried a couple of things out just in case... when it is working I will rewrite the callback parts.
Thank you very much in advance for any hint you can give me :).
Best regards and thanks for reading till now ;).
Fuchur
Hi im using Angularjs for my project, There is nationality search drop down. I want to map which is typing on Input and filter it inside nationality JSON object. This part is working fine in other browsers except IE. There is console error "Object doesn't support property or method 'startsWith'". this is my code, Can i know how to add "String.prototype.startsWith" for this issue for my code.
$scope.searchNationality = function (data) {
var output = [];
if (data != "" && data != undefined) {
$scope.ShowNationalityDropDown = true;
for (var i = 0; i < $scope.nationalityList.length; i++) {
if ($scope.nationalityList[i].content.toLowerCase().startsWith(data.toLowerCase())) {
output.push($scope.nationalityList[i]);
}
}
$scope.nationalityListSearchResults = output;
} else {
$scope.ShowNationalityDropDown = false;
$scope.nationalityListSearchResults = [];
}
};
You can try changing from .startsWith to .indexOf since it is compatible with IE for lower versions. If .indexOf returns 0 then the string is in the first position of the string that calls that function, which can be usable when you are in this kind of situation that you can't use .startsWith().
const str = "Hey this is a sample string!"
console.log(str.indexOf("Hey") === 0)
console.log(str.indexOf("sample") === 0)
$scope.searchNationality = function (data) {
var thereIsData = data != "" && data != undefined;
var output = thereIsData
? $scope.nationalityList.filter(function (nationality) {
return nationality.content.toLowerCase().indexOf(data.toLowerCase())) == 0;
})
: [];
$scope.ShowNationalityDropDown = thereIsData;
}
For a website there is this function under sources with the code:
betSlipView.prototype.stakeOnKeyUp = function(_key) {
var model = ob.slip.getModel(),
defval = ob.cfg.default_bet_amount;
selector = toJqId(["#stake-", _key].join('')),
stake_box = $(selector),
spl = stake_box.val();
if(spl != defval) {
spl = ob.slip.cleanFormatedAmount(spl);
if(spl === '' || isNaN(spl)) {
spl = 0;
$(selector).val('');
}
model.setBetStake(_key, spl);
$(toJqId(['#ob-slip-estimate-', _key].join(''))).html(
model.getBet(_key, 'pretty_returns')
);
} else {
$(selector).val(defval);
model.setBetStake(_key, defval);
$(toJqId(['#ob-slip-estimate-', _key].join(''))).html(
model.getBet(_key, 'pretty_returns')
);
}
//Update bonus amount
try {
var offers = model.getBet(_key, 'offers');
}
catch(err) {
var offers = "";
}
if(offers !== "" && typeof offers['STLWIN'] !== "undefined") {
this._handleAccumulatorBonusElements(_key, offers['STLWIN']);
};
// potential returns for this bet
this.updateTotals();
};
I cannot figure out how to (if possible) call this function directly from the console. Firstly, when I try to write betSlipView in the console, it cannot be found. Consequently if I copy the code to the console to define the function, betSlipView is still not found and if I try to change the function name, there are some names in the function body that cannot be found either. I wish to call this function with certain arguments, is this possible?
The whole code can be found here https://obstatic1.danskespil.dk/static/compressed/js/ob/slip/crunched.pkg.js?ver=0305f181cb96b61490e0fd2adafa3a91
I have a node/express server and I'm trying to get a function from a helper file to my app.js for use. Here is the function in the helper file:
CC.CURRENT.unpack = function(value)
{
var valuesArray = value.split("~");
var valuesArrayLenght = valuesArray.length;
var mask = valuesArray[valuesArrayLenght-1];
var maskInt = parseInt(mask,16);
var unpackedCurrent = {};
var currentField = 0;
for(var property in this.FIELDS)
{
if(this.FIELDS[property] === 0)
{
unpackedCurrent[property] = valuesArray[currentField];
currentField++;
}
else if(maskInt&this.FIELDS[property])
{
//i know this is a hack, for cccagg, future code please don't hate me:(, i did this to avoid
//subscribing to trades as well in order to show the last market
if(property === 'LASTMARKET'){
unpackedCurrent[property] = valuesArray[currentField];
}else{
unpackedCurrent[property] = parseFloat(valuesArray[currentField]);
}
currentField++;
}
}
return unpackedCurrent;
};
At the bottom of that helper file I did a module.export (The helper file is 400 lines long and I don't want to export every function in it):
module.exports = {
unpackMessage: function(value) {
CCC.CURRENT.unpack(value);
}
}
Then in my app.js I called
var helperUtil = require('./helpers/ccc-streamer-utilities.js');
and finally, I called that function in app.js and console.log it:
res = helperUtil.unpackMessage(message);
console.log(res);
The problem is that the console.log gives off an undefined every time, but in this example: https://github.com/cryptoqween/cryptoqween.github.io/tree/master/streamer/current (which is not node.js) it works perfectly. So I think I am importing wrong. All I want to do is use that utility function in my app.js
The unPackMessage(val) call doesn't return anything:
module.exports = {
unpackMessage: function(value) {
CCC.CURRENT.unpack(value);
}
}
you need to return CCC.CURRENT.UNPACK(value);
module.exports = {
unpackMessage: function(value) {
return CCC.CURRENT.unpack(value);
}
}
I am trying to make a firefox extension, and this is my very simple code:
var SlashUnblocker_Button = {
//*************************************
var prefManager = Components.classes["#mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);
var prefs = Components.classes["#mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService);
prefs.QueryInterface(Components.interfaces.nsIPrefBranch2);
var alertsService = Components.classes["#mozilla.org/alerts-service;1"].getService(Components.interfaces.nsIAlertsService);
var urlbar = window.content.location.href;
prefManager.setCharPref("extensions.mf_unblocker.blocker_latest_url",urlbar);
prefManager.setCharPref("extensions.mf_unblocker.blocker_latest_url_title",document.title);
//*************************************
1: function () {
if(prefManager.getCharPref("extensions.mf_unblocker.blocker_user_email") != "a#a.com")
{
gBrowser.selectedTab = gBrowser.addTab("chrome://mf_unblocker/content/1_options.html");
}
else
{
gBrowser.selectedTab = gBrowser.addTab("chrome://mf_unblocker/content/0_register.html");
}
},
test: function () {alert("testing!");}
}
window.addEventListener("load", function (e)
{
SlashUnblocker_Button['test']();
}, false);
Here's the problem, see the part where I marked it with //********* ?
See the code inbetween.
If I put that code above the two functions it throws an error... but if I put it in function 1() then it works fine. The problem is I need to reference variable prefManager from both functions.
What am I doing wrong?
If I'm not mistaking, you are trying to put code into an object.
You should be putting it into a builder.
function SlashUnlockerButton(){
//*************************************
this.prefManager = Components.classes["#mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);
this.prefs = Components.classes["#mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefService);
prefs.QueryInterface(Components.interfaces.nsIPrefBranch2);
this.alertsService = Components.classes["#mozilla.org/alerts-service;1"].getService(Components.interfaces.nsIAlertsService);
this.urlbar = window.content.location.href;
prefManager.setCharPref("extensions.mf_unblocker.blocker_latest_url",urlbar);
prefManager.setCharPref("extensions.mf_unblocker.blocker_latest_url_title",document.title);
//*************************************
this.1 = function () {
if(prefManager.getCharPref("extensions.mf_unblocker.blocker_user_email") != "a#a.com")
{
gBrowser.selectedTab = gBrowser.addTab("chrome://mf_unblocker/content/1_options.html");
}
else
{
gBrowser.selectedTab = gBrowser.addTab("chrome://mf_unblocker/content/0_register.html");
}
};
this.test = function () {alert("testing!");};
}
var SlashUnblocker_Button = new SlashUnlockerButton();
//...
I haven't tested it, but that's the idea.
http://www.w3schools.com/js/js_objects.asp
Have you tried placing the //*** section before var SlashUnblocker_Button?