I'm a newbie to reactjs and trying to test a very basic component, however it seems all my struggle is futile because its not showing up in the browser.
I'm using asp.net MVC 5 app and I've been following along this tutorial https://reactjs.net/getting-started/tutorial_aspnet4.html as the tutorial states you need to add React.Web.Mvc4 Nuget package which have some dependencies.
My simple React component (SimpleComponent.jsx)
var ComponentBox = React.createClass({
render: function() {
return (<div style="background-color:antiquewhite">Hello World ReactJs Component!</div>);
}
});
ReactDOM.render(
<ComponentBox />,
document.getElementById('reactDiv')
);
and my razor view is pretty simple
#{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.3.2/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.3.2/react-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/remarkable/1.7.1/remarkable.min.js"></script>
</head>
<body>
<div id="reactDiv"></div>
<script src="#Url.Content("~/Scripts/SimpleComponent.jsx")"></script>
</body>
</html>
Did I miss something?
The Solution for my problem was to replace the style element in my jsx file as following
var ComponentBox = React.createClass({
render: function () {
return (<div style={{background:'antiquewhite'}}>Hello World ReactJs Component!</div>);
}
});
Based on react docs "using the style attribute as the primary means of styling elements is generally not recommended"
by using javascript object to store the style as properties and I hope this'll help someone.
Related
I need to build a cross platform app with multiple windows. So I would like to know how to use html templates in electron.
Based on a similar question and what I've seen, there's no built in html template language in Electron, which is actually great because it allows you to use any other template language.
I'm currently playing with ejs in Electron.
Below is my index.ejs template file:
<html lang="en">
<head>
<title>The Index Page</title>
</head>
<body>
<h1>Welcome, this is the Index page.</h1>
<% if (user) { %>
<h3>Hello there <%= user.name %></h3>
<% } %>
</body>
</html>
And below is a section of my main.js file where the above template is rendered and loaded onto the BrowserWindow. Note that I've left out most of the boilerplate code:
const ejs = require('ejs');
//... Other code
let win = new BrowserWindow({width: 800, height: 600});
//... Other code
// send the data and options to the ejs template
let data = {user: {name: "Jeff"}};
let options = {root: __dirname};
ejs.renderFile('index.ejs', data, options, function (err, str) {
if (err) {
console.log(err);
}
// Load the rendered HTML to the BrowserWindow.
win.loadURL('data:text/html;charset=utf-8,' + encodeURI(str));
});
I'll give some credit to this gist for helping me find the data:text/html;charset=utf-8 part of the url that can be used to load dynamic content.
UPDATE
I'm actually not using this anymore. It's faster to just load the default html and use the native DOM methods. The Electron Quickstart program shows how to do this nicely.
Another option is to do the templating during your build. Here is a simple example using gulp to add nonces to the CSP meta tag and the inline script.
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'nonce-<%= scriptNonce %>';">
<title>Basic Electron App</title>
</head>
<body>
<div id="app"></div>
<script type="application/javascript" nonce=<%= scriptNonce %>>
require('./index.js');
</script>
</body>
</html>
and in gulfile.js add the following to what you already have and make sure this task is included in your pipeline. You can also just update your current html task with the code below.
const template = require('gulp-template');
const uuidv4 = require('uuid/v4');
gulp.task('copy-html', () => {
// Create nonces during the build and pass them to the template for use with inline scripts and styles
const nonceData = {
scriptNonce: new Buffer(uuidv4()).toString('base64'),
styleNonce: new Buffer(uuidv4()).toString('base64')
};
return gulp.src('src/*.html')
.pipe(template(nonceData))
.pipe(gulp.dest('dist/'));
});
This is a very stripped down example. I have a more complete example at https://github.com/NFabrizio/data-entry-electron-app if anyone is interested, though there is still one warning when running the application because one of the packages I am using pulls in react-beautiful-dnd, which adds inline styles but does not currently accept nonces.
edit: This questions is solved
Stupidly enough, the url /img/images.json is treated differently by the simpleHttpServer used to test the application than by the iOS simulator.
It was a long search why it would show the list in the browser when testing but not in the simulator. Apparently the simpleHttpServer that comes with python will treat a url starting with the / as it's root, for example the www folder. The simulator does not and would appreciate a relative location, starting with no /
The problem seems mostly caused by the rustiness of my web-dev skills ^.^
====================
I am trying to make a simple ionic app, and for some input I am using the Angular Tutorial.
I have a very simple page that should load the contents of a json-file with image data. And all it needs to do for now is showing the image names. At the end it should dump the complete data from the json-file.
This is all based of the blank project created with ionic.
index.html:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
<script src="lib/ionic/js/ionic.bundle.js"></script>
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app.js"></script>
<script src="js/controller.js"></script>
</head>
<body ng-app="phocalsApp">
<ion-pane>
<ion-header-bar class="bar-stable">
<h1 class="title">Ionic Blank Starter</h1>
</ion-header-bar>
<ion-content ng-controller="imageListCtl">
<ul class="imagelist">
<li ng-repeat="image in imagelist" >
{{image.imgName}}
</li>
</ul>
{{imagelist | json}}
</ion-content>
</ion-pane>
</body>
</html>
app.js:
// Ionic Starter App
// angular.module is a global place for creating, registering and retrieving Angular modules
// 'starter' is the name of this angular module example (also set in a <body> attribute in index.html)
// the 2nd parameter is an array of 'requires'
angular.module('phocalsApp', ['ionic', 'phocalsControllers'])
.run(function($ionicPlatform) {
$ionicPlatform.ready(function() {
// Hide the accessory bar by default (remove this to show the accessory bar above the keyboard
// for form inputs)
if(window.cordova && window.cordova.plugins.Keyboard) {
cordova.plugins.Keyboard.hideKeyboardAccessoryBar(true);
}
if(window.StatusBar) {
StatusBar.styleDefault();
}
});
})
controller.js
'use strict';
var phocalsControllers = angular.module('phocalsControllers', []);
phocalsControllers.controller('imageListCtl', ['$scope', '$http',
function($scope, $http) {
$http.get('/img/images.json').success(function(data) {
$scope.imagelist = data;
});
$scope.orderProp = 'imgDate';
}]);
images.json:
[
{
"imgUrl":"",
"imgName":"Nieuwste Foto",
"imgDate":20140525
},
{
"imgUrl":"",
"imgName":"tweede Foto",
"imgDate":20140524
},
{
"imgUrl":"",
"imgName":"derde Foto",
"imgDate":20140523
}
]
Seeing as I pretty much use the same code as the angular example, I would expect this to work, unfortunately all the output I am getting when running in the ios Simulator is an empty page with the header-bar. No errors or nothing. Can anyone tell me what I am doing wrong here?
You are missing some console.log(data) in your controller to check whether the controller is initialized, wether $http actually succeeds etc.
Even after using angular for months, i have to log every step cause there are too many things to go wrong :)
Also you should add an error function to
$http.get('/img/images.json').success(function(data) {
$scope.imagelist = data;
}).error(function(data) ....;
when I tried to run even a blank app, the console output is:
"Error calling js to fire nativeReady event. Did you include cordova.js in your html script tag?"
Doctype is:
<!DOCTYPE html>
And this are script references:
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="format-detection" content="telephone=no" />
<meta name="viewport" content="initial-scale=1, width=device-width, height=device-height" />
<link rel="stylesheet" href="css/jquery.mobile.structure-1.3.0.min.css" />
<link rel="stylesheet" type="text/css" href="css/index.css" />
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type='text/javascript' src='js/angular.min.js'></script>
<script type='text/javascript' src='js/angular-ui.js'></script>
<script type='text/javascript' src='js/jqm-setup.js'></script>
<script type="text/javascript" src="js/jquery.mobile.js"></script>
<script type="text/javascript" src="js/jquery-mobile-angular-adapter.min.js"></script>
<script type="text/javascript" src="cordova-2.5.0.js"></script>
<script type="text/javascript" src="js/index.js"></script>-->
This error disappears only when I remove the jquery mobile stuff...
Thanks in advance.
I would avoid JQuery Mobile in PhoneGap applications. I got to meet Andrew Trice, Adobe PhoneGap Evangelist, at a DC Droid Meet and listened to him present in a few Webinars. I've heard him say more than once that JQuery Mobile has huge performance issues. He recommended using other frameworks if possible. There are many other frameworks out there with good design, widgets, and samples that make them easy to learn. I think he even created his own called AppUI. Just look around and you'll find some really cool ones.
That error is definitely what it says: your cordova.js file is not being included correctly. Fix that first.
To answer your larger question: Angular, jQuery Mobile, and PhoneGap will play together but it comes with some big caveats.
The biggest issue is that the jQuery Angular Mobile adapter is currently abandoned while they invest time in building a better solution: angular-jqm. That means that the adapter only works with outdated versions of the libraries.
Second: those outdated library versions have some issues working with Windows Phone. These are fixable, too, but lock you into an even less maintainable version of them.
So here is the setup:
<script src="javascripts/vendor/jquery-mobile-1.3.1.js"></script>
<!-- this angular-1.0.6 includes a patch to support WP8 URLs: https://github.com/angular/angular.js/issues/2303 -->
<script src="javascripts/vendor/angular-1.0.6.js"></script>
<script src="javascripts/vendor/jquery-angular-mobile-adapter-1.3.2.js"></script>
Unfortunately I was never able to get partials to load via XHR so I included all pages in index.html document.
<body ng-controller="AppController">
<div data-role="page" id="first" ng-controller="FirstController">
<h1>First Page</h1>
<p>{{foo}}</p>
<p>Second Page</p>
</div>
<div data-role="page" id="second" ng-controller="SecondController">
<h2>Second Page</h2>
</div>
</body>
Then you need to switch off a few niceties in the JavaScript and set up your routes:
<script>
var so_example = angular.module('so_example', []).
config(function ($routeProvider, $locationProvider, $compileProvider) {
// turn off html5 mode so that we just navigate around using hashes
$locationProvider.html5Mode(false).hashPrefix("");
// allow for the odd URLs included in Windows Mobile PhoneGap
$compileProvider.urlSanitizationWhitelist(/^\s*(https?|ftp|mailto|file|tel|x-wmapp0):/);
$routeProvider.
when('/second', {
templateUrl: '#second',
jqmOptions: { transition: 'slide' }
}).
when('/', {
templateUrl: "#first"
});
}).
controller("FirstController", function ($scope) {
$scope.foo = "Hello, World!";
}).
controller("SecondController", function ($scope) {
});
</script>
Now you need to leverage the Cordova library before you bootstrap Angular to your HTML:
var app = (function () {
function onDeviceReady() {
angular.bootstrap(document, ['so_example']);
$.mobile.phonegapNavigationEnabled = true;
}
return {
initialize: function() {
document.addEventListener('deviceready', onDeviceReady, false);
}
};
})();
app.initialize();
I am having trouble with using OpenLayers in Gmaps4Rails (Gem version 1.5.2.) When I click on a marker I would like to show the typical callout (Infobox). Unfortunately I get the following JavaScript error:
this.serviceObject is undefined
Firebug calls the line 195 of the file "gmaps4rails.openlayers.js" responsable:
return this.serviceObject.addPopup(popup);
If I use Google Maps as API provider instead, everything works fine. Showing and hiding the infobox works nicely. This is why I assume that the error must be somewhere in "gmaps4rails.openlayers.js"
I tried on the latest FF and Chrome on Mac.
For reproducing the error in a reduced example, I created a simple HTML page in the public folder of my Rails 3.2 app and directly linked the needed JS and CSS files. To create the HTML page I copied the HTML code of my broken Rails app and reduced it.
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<link href="/assets/gmaps4rails.css" media="screen" rel="stylesheet" type="text/css" />
<script src="/assets/gmaps4rails/gmaps4rails.base.js" type="text/javascript"></script>
<script src="/assets/gmaps4rails/gmaps4rails.openlayers.js" type="text/javascript"></script>
</head>
<body>
<div class="map_container">
<div id="map" class="gmaps4rails_map"></div>
</div>
<script src="http://www.openlayers.org/api/OpenLayers.js" type="text/javascript"></script>
<script type="text/javascript" charset="utf-8">
Gmaps.map = new Gmaps4RailsOpenlayers();
Gmaps.load_map = function() {
Gmaps.map.map_options.provider = "openlayers";
Gmaps.map.initialize();
Gmaps.map.markers = [
{"description":"<p>This shall be in in the popup</p>",
"id":117979030,
"lat":39.5715,
"lng":2.64694}
];
Gmaps.map.create_markers();
Gmaps.map.adjustMapToBounds();
Gmaps.map.callback();
};
Gmaps.oldOnload = window.onload;
window.onload = function() {
Gmaps.triggerOldOnload();
Gmaps.loadMaps();
};
</script>
</body>
</html>
Unfortunately I could not find a working example of a successful Gmap4Rails–Openlayers integration on the web. Am I missing a mandatory parameter?
Thanks in advance.
It's a bug.
Replace:
return this.serviceObject.addPopup(popup);
with:
return this.map.addPopup(popup);
I'll push a fix soon, thanks and +1
I must be missing something very basic in the CSS. My jQuery anchor button is functional, but it's rendering as a simple underlined label, not asa rounded-corner UI button. I would be grateful if someone could point out the error in this simple example.
Thanks
!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<HTML LANG="en-US">
<HEAD>
<TITLE>button test</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="Expires" content="Sat, 22 May 2010 00:00:11 GMT">
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css">
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.1/jquery-ui.min.js"></script>
<SCRIPT type="text/javascript">
$(document).ready(
function() {
$('a','.test').click(function(){showIntro();return false;});
});
function showIntro()
{
document.location.href="intro.htm";
}
</script>
<body>
<div class='test'>Button</div>
</body>
</html>
You need to actually make it a button using .button(), like this:
$(function() {
$(".test a").button();
});
You can see the jQuery UI demos here and a demo of your markup working here.
You need to add the proper class to the link, using jQuery or otherwise.
Try:
Button
You do not need to make it a button you just need
$(".test a").click(function(){showIntro();return false;});
What you are trying to do with your selector passing the second paramater is the Scope.
The second paramater is not mean to be a string (selector) it should be a jQuery Object.
So if you wanted to do it your way your would have to say
var test = $('.test');
$('a',test).click...
But the 1st method is prefered over doing it this way.
Sorry to be providing an answer, if not "the" answer, to my own question, but I have discovered a clue as to what's going on, if not the ultimate cause of the behavior. Below is code cut and pasted from the Button example on the jQuery website; take it to jsFiddle and run it: it works. But if you remove this line relating to the input-button:
$("button, input:submit, a", ".demo").button();
then the anchor-button fails to render properly. Why is the anchor-element's rendering dependent on the existence of the input-button?
<script type="text/javascript">
$(function() {
$("button, input:submit, a", ".demo").button();
$("a", ".demo").click(function() { return false; });
});
</script>
<style>
</style>
<div class="demo">
<button>A button element</button>
<input type="submit" value="A submit button">
An anchor
</div><!-- End demo -->
​