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ReactJS Updating Array

javascript,reactjs
I'm currently starting to learn ReactJS and have run into some trouble updating an array. Currently I have a searchable list of contacts which is working fine. But using the input box below the list I am trying to add additional items to the list using the update() function. Sample...

React Rails component: manually triggering a re-render

javascript,jquery,ruby-on-rails,reactjs,react-rails
In Rails, I've got a set of Bootstrap tabs on a page with a React component on each one, ie: <div id="tab-1" class="tab-pane"> ... <%= react_component('PeopleWidget', person_id: @person.id) %> ... </div> <div id="tab-2" class="tab-pane"> ... <%= react_component('ContentWidget', content_id: @content.id) %> ... </div> The components: Do not talk with each other...

Ajax success issue with React and Rails

ruby-on-rails,ajax,reactjs
I've got a form that I am trying to handle with React. This is the ajax method in the handleSubmit function: $.ajax({ data: formData, dataType: "json", url: '/requests', type: "POST", success: function(data, status, xhr) { console.log('SHOW HERE ON RESPONSE'); this.setState({ formSubmitted: true }); } }); When I click on submit,...

jsx command not found on mac terminal

node.js,npm,reactjs,jsx
Problem: I execute the following command from the macintosh terminal: $ jsx --watch src/ build/ I recieve the following output error from the terminal: -bash: jsx: command not found Relevant information: I am following the following tutorial: https://facebook.github.io/react/docs/getting-started.html I executed the following command from the tutorial with positive output: $...

Rx.js React extension testing stream and intermediate results

unit-testing,reactjs,rxjs
I have a module which stores data in this.store and takes keyboard events in this.stream The relationship between this.store and this.stream is as follows this.stream.subscribe(function(keyCode){ this.store.add(100) }); Now I am writing test cases against those events. I want to know when I click the keyboard 3 times respectively what will...

React js css transitions on class removal

twitter-bootstrap,reactjs,css-transitions
I have column that should have different width depending on some flag. I use Bootstrap, so I assign col-xs-12 and col-xs-2 depending on the flag. Now I want it to change width slowly with css transition. I've read official React.js doc about transitions, but it doesn't apply to my case:...

JQuery .animate() not working with ReactJS?

jquery,reactjs
I am trying to highlight a cell when the user click on it by using jQuery .animate() clickHandler: function() { var cell = React.findDOMNode(this.refs.cell); // $(cell).css("background-color", "blue"); // THIS WORK $(cell).animate({ backgroundColor: "blue" }, 1000); // THIS DOESN'T WORK }, I am also using React.addons.CSSTransitionGroup. Maybe there is a conflict...

Why should addChangeListener be in componentDidMount instead of componentWillMount?

javascript,reactjs,reactjs-flux,flux
I saw this line as an answer to another question on here: "componentWillMount should be componentDidMount, or else you'll leak event emitters in node." and I don't really understand it. Can someone explain with more detail? More info: Building a react application with flux, as part of the initial render,...

Passing an element vs. a react class to an optionally displayed modal

reactjs,react-bootstrap
I have a table cell that the user can click on which will launch a react-bootstrap modal that displays additional details. The modal displays a component that has its own state and may trigger an action to pull data from the back-end if the store doesn't have the data it...

how to render through a simple for-loop in Reactjs?

javascript,reactjs,flux
I have a simple react component defined below React.createClass({ generateContent:function(){ for(i = 1;i<=100;i++) if(i%2 == 0) { return <li>Even!</li> } else{ return <li>Odd!</li> } }, render:function(){ return (<ul> {this.generateContent()} </ul>) } }) While Rendering, The component returns the first statement of the for loop(<li>Odd</li>) and then exits. I'd like something...

React/reflux how to do proper async calls

javascript,asynchronous,reactjs,jsx,refluxjs
I recently started to learn ReactJS, but I'm getting confused for async calls. Lets say I have a Login page with user/pass fields and login button. Component looks like: var Login = React.createClass({ getInitialState: function() { return { isLoggedIn: AuthStore.isLoggedIn() }; }, onLoginChange: function(loginState) { this.setState({ isLoggedIn: loginState }); },...

ReactJS localhost Ajax call: No 'Access-Control-Allow-Origin' header

javascript,ajax,node.js,localhost,reactjs
Working on the ReactJS tutorial I spinned up a local server with >npm install -g http-server >http-server -c-1 And got local server working fine located at http://localhost:8080 Though, when I attempted to use an AJAX call within one of my components, I got the following error in my chrome console:...

After scrolling on IPad, some content of my website is hidden behind a white area

javascript,html,ios,css,reactjs
Introduction We're developing a website and on one page we'd like to display some simple charts. Therefore we're using canvas to draw the charts. I konw there are other great libraries therefore, but right know we just need a quick and dirty solution for a first shot. Generally we work...

Events not propagating across react components

javascript,reactjs
I have the following react components: class Button extends React.Component { constructor(props){ super(props); this.state = { disabled: false }; } render() { return <button disabled={this.state.disabled} onClick={this.clicked.bind(this)}>Save</button>; } clicked(event) { this.setState({disabled: true}); } } class Form extends React.Component { contructor(props) { super(props); this.state = { foo: "bar" }; } render() {...

React from NPM cannot be used on the client because 'development' is not defined. The bundle was generated from Webpack

javascript,node.js,npm,reactjs,webpack
I'm creating a React Node.js app and I'm trying to generate a Webpack bundle containing the React source code I loaded from NPM. However, it seems that the React code from NPM cannot be used directly in the client. It triggers this error: Uncaught ReferenceError: development is not defined The...

Better/faster way for changing React array state than cloning it?

reactjs
Whenever a React class has a state object that is or contains an array, updating that state feels awkward. Usually what I do is var newArrayThing = _.clone(this.state.arrayThing); //or slice() newArrayThing[123] = 42; //update stuff this.setState({arrayThing: newArrayThing}); Is there a better or more elegant way of handling this I am...

React select onChange is not working

javascript,reactjs
JsFiddle : https://jsfiddle.net/69z2wepo/9956/ I am returning a select element in the render function in my react.js code. But whenever I change the select value, the function in the onChange is not getting triggered. var Hello = React.createClass({ render: function() { return <select id="data-type" onChange={changeDataType()}> <option selected="selected" value="user" data-type="enum">User</option> <option value="HQ...

Expected corresponding JSX closing tag for input Reactjs

javascript,reactjs,reactjs-flux,react-jsx
While creating a component in Reactjs with input fields error occurs Error: Parse Error: Line 47: Expected corresponding JSX closing tag for input at http://localhost/chat-react/src/script.js:47:20 </div> var Main = React.createClass({ render: function() { return ( <div className="card-action"> <i class="mdi-action-account-circle prefix"></i> <input id="icon_prefix" type="text" class="validate"> </div> ); } }); ...

html Forms inside reactJS

javascript,html,reactjs
I used the (almost) exact syntax for creating an html form in react: var Hello = React.createClass({ render: function() { return <div> <section> <form action="http://localhost:9203/ask"> Text: <input type="text" name="text" value="Text"/> <br/> Focus: <input type="text" name="focus" value="Focus"/> <br/><br/> <input type="submit" value="Submit"/> </form> </section> </div>; } }); React.render(<Hello name="World" />, document.getElementById('container'));...

Jest - How to find rendered DOM component with id?

reactjs,jestjs
I am writing a simple Jest test that verifies that my component rendered. I see that React's TestUtils has functions for finding rendered components by class or by tag, but not by their ID attribute. There is a findAllInRenderedTree function, but the documentation does not explain what the callback should...

Why calling react setState method doesn't mutate the state immediately?

javascript,reactjs,react-jsx
I'm reading Forms section of reactjs documentation and just tried this code to demonstrate onChange usage (JSBIN). var React= require('react'); var ControlledForm= React.createClass({ getInitialState: function() { return { value: "initial value" }; }, handleChange: function(event) { console.log(this.state.value); this.setState({value: event.target.value}); console.log(this.state.value); }, render: function() { return ( <input type="text" value={this.state.value} onChange={this.handleChange}/>...

react.js dynamically grabbing object resulting in undefined

javascript,reactjs
I am learning react.js. I have an object literal and I am trying to dynamically select an object within an object based upon what was chosen from a select input. I am getting undefined, however. I have tried both dot and bracket notation. I am successfully grabbing the value of...

list not ordering well dynamic children

reactjs
My problem is that react is not respecting the order I am giving by the backend. It gives me a warning. Child objects should have non-numeric keys so ordering is preserved I checked the documentation and I don't know where the error is. dynamic children I'm passing the key to...

React issue with updating state during re-render

javascript,reactjs
I have 2 components, a StaticComponent and an InteractiveComponent. The StaticComponent shows the user's information. It has a link to edit the information. That link has an onClick that fires off the handleEditClick function. This replaces the StaticComponent with an InteractiveComponent which has a form. var StaticComponent = React.createClass({ handleEditClick:...

reactjs Uncaught TypeError: Cannot read property 'map' of undefined

javascript,jquery,ajax,reactjs
I have used getInitialState on my BrowseWidgetBox component. Although when passing the data to my MainMenu component, the data remains empty, as if the AJAX call to the api was never run in the BrowseWidgetBox. My question then, is why is this happening? Shouldn't componentDidMount call the ajax api and...

Should I pass all the state in every change from store to component?

javascript,performance,reactjs,reactjs-flux,flux
I am new on React and Flux and I am making an app that will have an input (like the name or the title), and below a list of n things. How should I handle the event listeners? I saw in the TODO example of flux (https://github.com/facebook/flux/blob/master/examples/flux-todomvc/) that they use...

What is the proper way to get the value of a React