I am trying to render in canvas the module that I built with SDL2, but I also need to call functions while the module is running and send data there, according to the examples I found it turns out so:
var Module = {
canvas: (function () {
var canvas = document.getElementById('canvas');
canvas.addEventListener('webglcontextlost', e => {
alert('WebGL context lost. You will need to reload the page.');
e.preventDefault();
}, false);
return canvas;
})(),
};
SSE.onmessage = msg => {
Module.onRuntimeInitialized = () => {
Module.ccall('set_num', null, ['number'], [msg]);
};
}
The function was called once, but I need to call it constantly in the event
make with
override CFLAGS += -std=c11\
-Os\
-sUSE_SDL_TTF=2\
-sUSE_SDL_IMAGE=2\
-sSDL2_IMAGE_FORMATS=["png"]\
-sEXPORTED_RUNTIME_METHODS=['ccall','cwrap']\
-sUSE_SDL=2\
-sWASM=1\
-sASSERTIONS\
--preload-file ./res
C
#ifdef __EMSCRIPTEN__
EMSCRIPTEN_KEEPALIVE
#endif
void set_num(int num) { g_obj->num = num; }
Related
The following works fine by assigning Symbol to sayHello.
var sayHello = Symbol('method');
const bar = {
[sayHello] () {
console.log('hello')
}
};
bar[sayHello]();
How to trigger the method inside Symbol if as follow
const bar3 = {
[Symbol('method')] () {
console.log('hello')
}
};
const sym = Object.getOwnPropertySymbols(bar3)[0];
bar3[sym]();
See Object.getOwnPropertySymbols documentation.
I am new to react-native and calling a function inside a fucntion.
I have done as below so far :
Step 1 : Created a function _snapshotToArray to convert the firebase snapshot to Arrray.
_snapshotToArray(snapshot) {
var returnArr = [];
snapshot.forEach(function(childSnapshot) {
var item = childSnapshot.val();
item.key = childSnapshot.key;
returnArr.push(item);
});
return returnArr;
}
Step 2 : Created another function as below and calling _snapshotToArray inside it.
_readUserDataFromFirebaseConsole() {//once and on
firebase.database().ref('Users/').on('value', function (snapshot) {
console.log(this._snapshotToArray(snapshot));
Toast.show(this._snapshotToArray(snapshot),Toast.LONG);
});
}
Talking about this call :
console.log(this._snapshotToArray(snapshot));
When I press CTRL+CLick, it not letting me to navigate to body of the fuction _snapshotToArray.
In Device am getting below error :
_snapshotToArray is not defined
What might be the issue ?
I'm not at my PC right now, so I cannot test it, but from looking at your code, you need to use a different function notation to allow the varibale access of/from parent methods and parent class.
_snapshotToArray = snapshot => {
var returnArr = [];
snapshot.forEach(function(childSnapshot) {
var item = childSnapshot.val();
item.key = childSnapshot.key;
returnArr.push(item);
});
return returnArr;
}
and
_readUserDataFromFirebaseConsole = () => {
firebase.database().ref('Users/').on('value', snapshot => {
console.log(this._snapshotToArray(snapshot));
Toast.show(this._snapshotToArray(snapshot),Toast.LONG);
});
}
I want to reference a google spreadsheet using tabletop for for the data in my d3 visualization. The best solution I can come up with is this, but I know that it's not quite right.
window.onload = function() { init() };
var public_spreadsheet_url = 'https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AmYzu_s7QHsmdDNZUzRlYldnWTZCLXdrMXlYQzVxSFE&output=html';
function init() {
Tabletop.init( { key: public_spreadsheet_url,
callback: showInfo,
simpleSheet: true } )
}
d3.json("showInfo", function(data) {
console.log(data);
});
The data comes as an array already (see output below); and so there is no need to apply d3.json. You can start using the array for your d3 visualization right away.
window.onload = function() { init() };
var public_spreadsheet_url = "https://docs.google.com/spreadsheet/pub?hl=en_US&hl=en_US&key=0AmYzu_s7QHsmdDNZUzRlYldnWTZCLXdrMXlYQzVxSFE&output=html";
function init() {
Tabletop.init( { key: public_spreadsheet_url,
callback: showInfo,
simpleSheet: true } )
}
function showInfo(rows) {
console.log(rows);
// build your d3 vis here..
}
Hi all I have a site developed in cakephp and I would to integrate backbone on it.
For my scope I would to use external js for backbone to reuse the code.
I have write some lines but I can't append results on my element.
I have tried to print the "el" in this modes:
console.log($(this.el));
console.log(this.el);
console.log(this.$el);
But nothing I can't enter into el to make a simple append!
The container #search-results already exist
This is my main view:
<script type="text/javascript">
var search = {};
search.product = {};
search.product.template = "#results-product-template";
search.product.container = "#search-results";
search.product.defaults = {
id:0,
type:"product",
};
$(function(){
var ProductList = new Search.Collections.Products();
var ProductView = new Search.Views.Product({
// new Search.Collections.Products();
collection:ProductList
,el:$("#search-results")
});
function parseResults () {
var json = {
//my data
}
for (var i = json.products.length - 1; i >= 0; i--) {
ProductList.add([new Search.Models.Product(json.products[i])]);
};
updateResults();
}
function updateResults () {
console.log('updateResults: Ritorno il risultato quando hunter riceve una risposta dal server');
if ($('#search-results').length == 0) {
$('div.main > section:first-child').before('<section id="search-results"> <ul id="product-results"> <li>Contenuto</li> </ul> </section>');
}
ProductView.render();
}
// search
$('#search-results .close').on('click', function () {
$('#search-results').animate({height:0}, 500, function () {
$(this).remove();
})
});
});
</script>
And this is my external js with backbone
var Search = {
Models: {},
Collections: {},
Views: {},
Templates:{}
}
Search.Models.Product = Backbone.Model.extend({
defaults: search.product.defaults || {},
toUrl:function (url) {
return url.replace(" ", "-").toLowerCase();
},
initialize:function () {
console.log("initialize Search.Models.Product");
this.on("change", function (){
console.log("chiamato evento change del Model Search.Models.Product");
});
this.on("change:text", function () {
console.log("chiamato evento change:text del Model Search.Models.Product");
});
}
});
Search.Collections.Products = Backbone.Collection.extend({
model: Search.Models.Product,
initialize:function () {
console.log("initialize Search.Collections.Products");
console.log(this);
console.log(this.length);
console.log(this.models);
}
});
Search.Views.Product = Backbone.View.extend({
initialize:function () {
console.log("initialize Search.Views.Product");
console.log($(search.product.template).html());
},
template:function (data) {
if (data == null) {
data = this.collection.toJSON();
}
var template = Handlebars.compile($(search.product.template).html());
template(data);
},
render:function () {
console.log($(this.el));
$(this.el.append("TEST"));
//HERE IS THE PROBLEM
// I have tried this.$el.append("TEST");
return this;
}
});
Does this change anything?
var ProductView = new Search.Views.Product({
// new Search.Collections.Products();
collection:ProductList,
el:$("#search-results")[0]
});
I think backbone can accept both jQuery wrapped or not wrapped object and be fine, but I don't know what Backbone version you are using, see if this works
EDIT: From backbone 1.0 sources, it seems backbone can indeed take either a jQuery wrapped object or a regular dom element, it should still work
this.$el = element instanceof Backbone.$ ? element : Backbone.$(element);
Do you have something online (JSFiddle?) I will be happy to take a look, but this.$el should work and be equal to $("#search-results") from your code in a quick glance.
Have you tried using ProductView.setElement($("#search-results")) instead? it should be the same, but worth a try as well.
function fileSelected() {
// get selected file element
var files = document.getElementById('files[]').files;
for (var i = 0; i < files.length; i++) //for multiple files
{
(function (file) {
var fileObj = {
Size: bytesToSize(file.size),
Type: file.type,
Name: file.name,
Data: null
};
var reader = new window.FileReader();
reader.onload = function (e) {
fileObj.Data = e.target.result;
};
// read selected file as DataURL
reader.readAsDataURL(file);
//Create Item
CreateFileUploadItem(fileObj);
})(files[i]);
}
}
function CreateFileUploadItem (item) {
console.log(item);
$('<li>', {
"class": item.Type,
"data-file": item.Data,
"html": item.Name + ' ' + item.Size
}).appendTo($('#filesForUpload'));
}
So when console.log(item) gets run in the CreateFileUploadItem function it shows the item.Data. YET it won't add it to the data-file of the LI. Why is that?
The call to readAsDataURL is asynchronous. Thus, the function call is likely returning prior to the onload function being called. So, the value of fileObj.Data is still null when you are attempting to use it in CreateFileUploadItem.
To fix it, you should move the call to CreateFileUploadItem into your onload function. As for the console logging the proper value, you can't rely on that being synchronous either. I think using a breakpoint during debugging at that line instead will likely show the true null value.