React Js Online Test

1. Server side Framework

2. User-interface framework

3. A Library for building interaction interfaces

4. None of These

Correct Answer : C

1. Module

2. Component

3. Package

4. Class

Correct Answer : B

1. setState

2. render with arguments

3. props

4. PropTypes

Correct Answer : C

1. state & props

2. services & components

Correct Answer : A

1. getWillState

2. getInitialState

3. getPropsValue

4. getDefaultProps

Correct Answer : D

1. An input element with the controlled flag

2. An input element whose value is being controlled by a component’s state

3. An input element that can only accept a list of characters

4. An input element that is controlled by the value of another input element

Correct Answer : B

1. setInitialnumber

2. setState

3. setnumber

4. setNewnumber

Correct Answer : B

1. It will be rendered as enabled

2. It will be rendered as disabled

3. It will not be rendered at all

Correct Answer : A

1. Inside js/components/

2. Inside vendor/components/

3. Inside external/components/

4. Inside vendor/

Correct Answer : A

1. Dispatcher->Action->Store->View

2. Action->Dispatcher->Store->View

3. Action->Store->Dispatcher->View

4. Action->Dispatcher->View->Store

Correct Answer : B

1. props

2. renderComponent

3. state

4. render

Correct Answer : C

1. this.getState()

2. this.values

3. this.prototype.stateValue

4. this.state

Correct Answer : B

1. A persistent storage.

2. An internal data store (object) of a component.

Correct Answer : B

1. Methods

2. Injected

3. Both 1 & 2

Correct Answer : A

1. Props

2. State

3. RenderComponent

4. Render

Correct Answer : D

1. componentDidUpdate

2. componentDidMount

3. componentMounted

4. componentUpdated

Correct Answer : B

1. style={{font-size:12,color:'red'}}

2. style={{fontSize:'12px',color:'red'}}

3. style={fontSize:'12px',color:'red'}

4. style={{font-size:12px,color:'red'}}

Correct Answer : B

1. Yes

2. No

Correct Answer : A

1. Flux

2. JSX

3. Dom

4. Props

Correct Answer : A

1. <h1>{fetch()}</h1>

2. <h1>${fetch()}</h1>

3. <h1>{fetch}</h1>

4. <h1>${fetch}</h1>

Correct Answer : A

1. one way data flow

2. Two way data flow

3. No one

Correct Answer : A

1. <button onclick={this.foo()}>

2. <button onclick={this.foo}>

3. <button onClick={this.foo()}>

4. <button onClick={this.foo}>

Correct Answer : D

1. Mounting, Updating

2. Mounting, Unmounting

3. Mounting, Updating, Unmounting

4. None of these

Correct Answer : C

1. Transpiles all the Javascript down into one file

2. Runs react local development server.

3. A module bundler

Correct Answer : C

1. A transpiler

2. An interpreter

3. A Compiler

4. Both Compiler and Transpilar

Correct Answer : D

1. 1

2. 2

3. Multiple Elements

Correct Answer : C

1. To invoke code after the setState operation is done

2. To replace the state completely instead of the default merge action

3. To access the previous state before the setState operation

Correct Answer : A

1. componentWillReceiveProps

2. shouldComponentUpdate

3. componentWillMount

4. componentDidMount

Correct Answer : C

1. willComponentUpdate

2. shouldComponentUpdate

3. componentDidUpdate

4. componentDidMount

Correct Answer : B

1. <

2. ->

3. >

4. =>

Correct Answer : D