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"to be prejudice towards/against someone" vs "to be prejudiced against/towards someone"

Why do I get two different answers for this counting problem?

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ReactJS - Get Height of an element

ReactJS get rendered component heightHow do you get the height of a stateless functional component that's a child?Get dimensions and position of an element using pure javascriptAdding ref to Reactstrap Jumbotron causes an errorHow do I detect a click outside an element?How do I check if an element is hidden in jQuery?Event binding on dynamically created elements?How do you get a timestamp in JavaScript?How to get the children of the $(this) selector?How can I get query string values in JavaScript?Get the current URL with JavaScript?How to move an element into another element?How do I remove a particular element from an array in JavaScript?jQuery scroll to element

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;

66

12

How can I get the Height of an element after React renders that element?

HTML

<div id="container">
<!-- This element's contents will be replaced with your component. -->
<p>
jnknwqkjnkj<br>
jhiwhiw (this is 36px height)
</p>
</div>

ReactJS

var DivSize = React.createClass(

 render: function() 
 let elHeight = document.getElementById('container').clientHeight
 return <div className="test">Size: <b>elHeightpx</b> but it should be 18px after the render</div>;
 
);

ReactDOM.render(
 <DivSize />,
 document.getElementById('container')
);

RESULT

Size: 36px but it should be 18px after the render

It's calculating the container height before the render (36px). I want to get the height after the render. The right result should be 18px in this case.

https://jsfiddle.net/69z2wepo/29800/

javascript reactjs

share|improve this question

asked Feb 2 '16 at 12:30

faia20faia20

365138

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  This is not a react question but rather a Javascript and DOM question. You should try to figure out which DOM event you should use to find the final height of your element. In the event handler, you can use setState to assign the height value to a state variable.
  
  – mostruash
  Feb 2 '16 at 12:45
  

  
  
  
  

add a comment | 

66

12

How can I get the Height of an element after React renders that element?

HTML

<div id="container">
<!-- This element's contents will be replaced with your component. -->
<p>
jnknwqkjnkj<br>
jhiwhiw (this is 36px height)
</p>
</div>

ReactJS

var DivSize = React.createClass(

 render: function() 
 let elHeight = document.getElementById('container').clientHeight
 return <div className="test">Size: <b>elHeightpx</b> but it should be 18px after the render</div>;
 
);

ReactDOM.render(
 <DivSize />,
 document.getElementById('container')
);

RESULT

Size: 36px but it should be 18px after the render

It's calculating the container height before the render (36px). I want to get the height after the render. The right result should be 18px in this case.

https://jsfiddle.net/69z2wepo/29800/

javascript reactjs

share|improve this question

asked Feb 2 '16 at 12:30

faia20faia20

365138

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  This is not a react question but rather a Javascript and DOM question. You should try to figure out which DOM event you should use to find the final height of your element. In the event handler, you can use setState to assign the height value to a state variable.
  
  – mostruash
  Feb 2 '16 at 12:45
  

  
  
  
  

add a comment | 

How can I get the Height of an element after React renders that element?

HTML

<div id="container">
<!-- This element's contents will be replaced with your component. -->
<p>
jnknwqkjnkj<br>
jhiwhiw (this is 36px height)
</p>
</div>

ReactJS

var DivSize = React.createClass(

 render: function() 
 let elHeight = document.getElementById('container').clientHeight
 return <div className="test">Size: <b>elHeightpx</b> but it should be 18px after the render</div>;
 
);

ReactDOM.render(
 <DivSize />,
 document.getElementById('container')
);

RESULT

Size: 36px but it should be 18px after the render

It's calculating the container height before the render (36px). I want to get the height after the render. The right result should be 18px in this case.

https://jsfiddle.net/69z2wepo/29800/

javascript reactjs

share|improve this question

asked Feb 2 '16 at 12:30

faia20faia20

365138

<div id="container">
<!-- This element's contents will be replaced with your component. -->
<p>
jnknwqkjnkj<br>
jhiwhiw (this is 36px height)
</p>
</div>

var DivSize = React.createClass(

 render: function() 
 let elHeight = document.getElementById('container').clientHeight
 return <div className="test">Size: <b>elHeightpx</b> but it should be 18px after the render</div>;
 
);

ReactDOM.render(
 <DivSize />,
 document.getElementById('container')
);

Size: 36px but it should be 18px after the render

share|improve this question

asked Feb 2 '16 at 12:30

faia20faia20

365138

share|improve this question

asked Feb 2 '16 at 12:30

faia20faia20

365138

asked Feb 2 '16 at 12:30

faia20faia20

365138

asked Feb 2 '16 at 12:30

faia20faia20

365138

4 Answers
4

active

oldest

votes

22

See this fiddle (actually updated your's)

You need to hook into componentDidMount which is run after render method. There, you get actual height of element.

share|improve this answer

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  not correct. see Paul Vincent Beigang's answer below
  
  – ekatz
  Nov 14 '17 at 20:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  incorrect fiddle explanation.
  
  – Chandresh
  Apr 26 '18 at 6:19
  

  
  
  
  

add a comment | 

100

Following is an up to date ES6 example using a ref.

Remember that we have to use a React class component since we need to access the Lifecycle method componentDidMount() because we can only determine the height of an element after it is rendered in the DOM.

import React, Component from 'react'
import render from 'react-dom'

class DivSize extends Component 

 constructor(props) 
 super(props)

 this.state = 
 height: 0
 
 

 componentDidMount() 
 const height = this.divElement.clientHeight;
 this.setState( height );
 

 render() 
 return (
 <div 
 className="test"
 ref= (divElement) => this.divElement = divElement
 >
 Size: <b>this.state.heightpx</b> but it should be 18px after the render
 </div>
 )
 


render(<DivSize />, document.querySelector('#container'))

You can find the running example here: https://www.webpackbin.com/bins/-KkP1HhC_tW4FeoYSuDe

share|improve this answer

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  This works but I am getting several eslint errors for Airbnb styleguide: <div ref= divElement => this.divElement = divElement>children</div> throws "[eslint] Arrow function should not return assignment. (no-return-assign)" and this.setState( height ); throws "[eslint] Do not use setState in componentDidMount (react/no-did-mount-set-state)". Anyone got a styleguide-compliant solution?
  
  – Timo
  Feb 21 '18 at 8:48
  
  

  
  
  
  


• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  Wrap the assignment in braces so that it behaves as a function (rather than an expression), like this ref= divElement => this.divElement = divElement
  
  – teletypist
  Mar 21 '18 at 22:37
  
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  This sould be the accepted answer :) Besides, if you want to get the size of the element after the element is updated, you can use the method componentDidUpdate as well.
  
  – jjimenez
  Apr 4 '18 at 11:36
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  is there an alternative to calling this.setState() in componentDidMount with this example?
  
  – danjones_mcr
  Aug 28 '18 at 11:10
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Good solution. But won't work for responsive designs. If header height was 50px for desktop, and user shrinks the window size, and now height becomes 100px, this solution won't take the updated height. They need to refresh the page to get the changed effects.
  
  – TheCoder
  Feb 6 at 19:41
  

  
  
  
  

 | 
show 2 more comments

8

You would also want to use refs on the element instead of using document.getElementById, it's just a slightly more robust thing.

share|improve this answer

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

add a comment | 

8

For those who are interested in using react hooks, this might help you get started.

import React, useState, useEffect, useRef from 'react'

export default () => 
 const [height, setHeight] = useState(0)
 const ref = useRef(null)

 useEffect(() => 
 setHeight(ref.current.clientHeight)
 )

 return (
 <div ref=ref>
 height
 </div>
 )

share|improve this answer

edited Mar 9 at 2:28

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for your answer - it helped me get started. 2 questions though: (1) For these layout-measuring tasks, should we use useLayoutEffect instead of useEffect? The docs seem to indicate that we should. See the "tip" section here: reactjs.org/docs/hooks-effect.html#detailed-explanation (2) For these cases where we just need a reference to a child element, should we use useRef instead of createRef? The docs seem to indicate the useRef is more appropriate for this use case. See: reactjs.org/docs/hooks-reference.html#useref
  
  – Jason Frank
  Mar 4 at 20:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just implemented a solution that uses the two items I'm suggesting. They seem to work well, but you may know of some downsides to these choices? Thanks for your help!
  
  – Jason Frank
  Mar 4 at 20:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JasonFrank Good questions. 1) Both useEffect and useLayoutEffect will be fired after layout and paint. However, useLayoutEffect will fire synchronously before the next paint. I'd say if you really need visual consistency then use useLayoutEffect, otherwise, useEffect should suffice. 2) You're right about that! In a functional component createRef will create a new ref every time the component is being rendered. Using useRef is the better option. I'll update my answer. Thanks!
  
  – Mr. 14
  Mar 9 at 2:27
  

  
  
  
  

add a comment | 

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22

See this fiddle (actually updated your's)

You need to hook into componentDidMount which is run after render method. There, you get actual height of element.

share|improve this answer

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  not correct. see Paul Vincent Beigang's answer below
  
  – ekatz
  Nov 14 '17 at 20:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  incorrect fiddle explanation.
  
  – Chandresh
  Apr 26 '18 at 6:19
  

  
  
  
  

add a comment | 

22

See this fiddle (actually updated your's)

You need to hook into componentDidMount which is run after render method. There, you get actual height of element.

share|improve this answer

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  not correct. see Paul Vincent Beigang's answer below
  
  – ekatz
  Nov 14 '17 at 20:47
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  incorrect fiddle explanation.
  
  – Chandresh
  Apr 26 '18 at 6:19
  

  
  
  
  

add a comment | 

See this fiddle (actually updated your's)

You need to hook into componentDidMount which is run after render method. There, you get actual height of element.

share|improve this answer

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

share|improve this answer

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

edited Feb 7 '17 at 10:31

Devid Farinelli

5,02152958

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

answered Feb 2 '16 at 12:46

AndreycoAndreyco

17.1k34459

100

Following is an up to date ES6 example using a ref.

Remember that we have to use a React class component since we need to access the Lifecycle method componentDidMount() because we can only determine the height of an element after it is rendered in the DOM.

import React, Component from 'react'
import render from 'react-dom'

class DivSize extends Component 

 constructor(props) 
 super(props)

 this.state = 
 height: 0
 
 

 componentDidMount() 
 const height = this.divElement.clientHeight;
 this.setState( height );
 

 render() 
 return (
 <div 
 className="test"
 ref= (divElement) => this.divElement = divElement
 >
 Size: <b>this.state.heightpx</b> but it should be 18px after the render
 </div>
 )
 


render(<DivSize />, document.querySelector('#container'))

You can find the running example here: https://www.webpackbin.com/bins/-KkP1HhC_tW4FeoYSuDe

share|improve this answer

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  This works but I am getting several eslint errors for Airbnb styleguide: <div ref= divElement => this.divElement = divElement>children</div> throws "[eslint] Arrow function should not return assignment. (no-return-assign)" and this.setState( height ); throws "[eslint] Do not use setState in componentDidMount (react/no-did-mount-set-state)". Anyone got a styleguide-compliant solution?
  
  – Timo
  Feb 21 '18 at 8:48
  
  

  
  
  
  


• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  Wrap the assignment in braces so that it behaves as a function (rather than an expression), like this ref= divElement => this.divElement = divElement
  
  – teletypist
  Mar 21 '18 at 22:37
  
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  This sould be the accepted answer :) Besides, if you want to get the size of the element after the element is updated, you can use the method componentDidUpdate as well.
  
  – jjimenez
  Apr 4 '18 at 11:36
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  is there an alternative to calling this.setState() in componentDidMount with this example?
  
  – danjones_mcr
  Aug 28 '18 at 11:10
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Good solution. But won't work for responsive designs. If header height was 50px for desktop, and user shrinks the window size, and now height becomes 100px, this solution won't take the updated height. They need to refresh the page to get the changed effects.
  
  – TheCoder
  Feb 6 at 19:41
  

  
  
  
  

 | 
show 2 more comments

100

Following is an up to date ES6 example using a ref.

Remember that we have to use a React class component since we need to access the Lifecycle method componentDidMount() because we can only determine the height of an element after it is rendered in the DOM.

import React, Component from 'react'
import render from 'react-dom'

class DivSize extends Component 

 constructor(props) 
 super(props)

 this.state = 
 height: 0
 
 

 componentDidMount() 
 const height = this.divElement.clientHeight;
 this.setState( height );
 

 render() 
 return (
 <div 
 className="test"
 ref= (divElement) => this.divElement = divElement
 >
 Size: <b>this.state.heightpx</b> but it should be 18px after the render
 </div>
 )
 


render(<DivSize />, document.querySelector('#container'))

You can find the running example here: https://www.webpackbin.com/bins/-KkP1HhC_tW4FeoYSuDe

share|improve this answer

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  This works but I am getting several eslint errors for Airbnb styleguide: <div ref= divElement => this.divElement = divElement>children</div> throws "[eslint] Arrow function should not return assignment. (no-return-assign)" and this.setState( height ); throws "[eslint] Do not use setState in componentDidMount (react/no-did-mount-set-state)". Anyone got a styleguide-compliant solution?
  
  – Timo
  Feb 21 '18 at 8:48
  
  

  
  
  
  


• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  Wrap the assignment in braces so that it behaves as a function (rather than an expression), like this ref= divElement => this.divElement = divElement
  
  – teletypist
  Mar 21 '18 at 22:37
  
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  This sould be the accepted answer :) Besides, if you want to get the size of the element after the element is updated, you can use the method componentDidUpdate as well.
  
  – jjimenez
  Apr 4 '18 at 11:36
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  is there an alternative to calling this.setState() in componentDidMount with this example?
  
  – danjones_mcr
  Aug 28 '18 at 11:10
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Good solution. But won't work for responsive designs. If header height was 50px for desktop, and user shrinks the window size, and now height becomes 100px, this solution won't take the updated height. They need to refresh the page to get the changed effects.
  
  – TheCoder
  Feb 6 at 19:41
  

  
  
  
  

 | 
show 2 more comments

Following is an up to date ES6 example using a ref.

Remember that we have to use a React class component since we need to access the Lifecycle method componentDidMount() because we can only determine the height of an element after it is rendered in the DOM.

import React, Component from 'react'
import render from 'react-dom'

class DivSize extends Component 

 constructor(props) 
 super(props)

 this.state = 
 height: 0
 
 

 componentDidMount() 
 const height = this.divElement.clientHeight;
 this.setState( height );
 

 render() 
 return (
 <div 
 className="test"
 ref= (divElement) => this.divElement = divElement
 >
 Size: <b>this.state.heightpx</b> but it should be 18px after the render
 </div>
 )
 


render(<DivSize />, document.querySelector('#container'))

You can find the running example here: https://www.webpackbin.com/bins/-KkP1HhC_tW4FeoYSuDe

share|improve this answer

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

import React, Component from 'react'
import render from 'react-dom'

class DivSize extends Component 

 constructor(props) 
 super(props)

 this.state = 
 height: 0
 
 

 componentDidMount() 
 const height = this.divElement.clientHeight;
 this.setState( height );
 

 render() 
 return (
 <div 
 className="test"
 ref= (divElement) => this.divElement = divElement
 >
 Size: <b>this.state.heightpx</b> but it should be 18px after the render
 </div>
 )
 


render(<DivSize />, document.querySelector('#container'))

share|improve this answer

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

answered May 18 '17 at 5:37

Paul Vincent BeigangPaul Vincent Beigang

1,22421018

8

You would also want to use refs on the element instead of using document.getElementById, it's just a slightly more robust thing.

share|improve this answer

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

add a comment | 

8

You would also want to use refs on the element instead of using document.getElementById, it's just a slightly more robust thing.

share|improve this answer

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

add a comment | 

You would also want to use refs on the element instead of using document.getElementById, it's just a slightly more robust thing.

share|improve this answer

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

share|improve this answer

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

edited Feb 7 '17 at 10:32

Devid Farinelli

5,02152958

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

answered Jan 27 '17 at 0:42

yoyodunnoyoyodunno

336316

8

For those who are interested in using react hooks, this might help you get started.

import React, useState, useEffect, useRef from 'react'

export default () => 
 const [height, setHeight] = useState(0)
 const ref = useRef(null)

 useEffect(() => 
 setHeight(ref.current.clientHeight)
 )

 return (
 <div ref=ref>
 height
 </div>
 )

share|improve this answer

edited Mar 9 at 2:28

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for your answer - it helped me get started. 2 questions though: (1) For these layout-measuring tasks, should we use useLayoutEffect instead of useEffect? The docs seem to indicate that we should. See the "tip" section here: reactjs.org/docs/hooks-effect.html#detailed-explanation (2) For these cases where we just need a reference to a child element, should we use useRef instead of createRef? The docs seem to indicate the useRef is more appropriate for this use case. See: reactjs.org/docs/hooks-reference.html#useref
  
  – Jason Frank
  Mar 4 at 20:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just implemented a solution that uses the two items I'm suggesting. They seem to work well, but you may know of some downsides to these choices? Thanks for your help!
  
  – Jason Frank
  Mar 4 at 20:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JasonFrank Good questions. 1) Both useEffect and useLayoutEffect will be fired after layout and paint. However, useLayoutEffect will fire synchronously before the next paint. I'd say if you really need visual consistency then use useLayoutEffect, otherwise, useEffect should suffice. 2) You're right about that! In a functional component createRef will create a new ref every time the component is being rendered. Using useRef is the better option. I'll update my answer. Thanks!
  
  – Mr. 14
  Mar 9 at 2:27
  

  
  
  
  

add a comment | 

8

For those who are interested in using react hooks, this might help you get started.

import React, useState, useEffect, useRef from 'react'

export default () => 
 const [height, setHeight] = useState(0)
 const ref = useRef(null)

 useEffect(() => 
 setHeight(ref.current.clientHeight)
 )

 return (
 <div ref=ref>
 height
 </div>
 )

share|improve this answer

edited Mar 9 at 2:28

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks for your answer - it helped me get started. 2 questions though: (1) For these layout-measuring tasks, should we use useLayoutEffect instead of useEffect? The docs seem to indicate that we should. See the "tip" section here: reactjs.org/docs/hooks-effect.html#detailed-explanation (2) For these cases where we just need a reference to a child element, should we use useRef instead of createRef? The docs seem to indicate the useRef is more appropriate for this use case. See: reactjs.org/docs/hooks-reference.html#useref
  
  – Jason Frank
  Mar 4 at 20:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just implemented a solution that uses the two items I'm suggesting. They seem to work well, but you may know of some downsides to these choices? Thanks for your help!
  
  – Jason Frank
  Mar 4 at 20:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @JasonFrank Good questions. 1) Both useEffect and useLayoutEffect will be fired after layout and paint. However, useLayoutEffect will fire synchronously before the next paint. I'd say if you really need visual consistency then use useLayoutEffect, otherwise, useEffect should suffice. 2) You're right about that! In a functional component createRef will create a new ref every time the component is being rendered. Using useRef is the better option. I'll update my answer. Thanks!
  
  – Mr. 14
  Mar 9 at 2:27
  

  
  
  
  

add a comment | 

For those who are interested in using react hooks, this might help you get started.

import React, useState, useEffect, useRef from 'react'

export default () => 
 const [height, setHeight] = useState(0)
 const ref = useRef(null)

 useEffect(() => 
 setHeight(ref.current.clientHeight)
 )

 return (
 <div ref=ref>
 height
 </div>
 )

share|improve this answer

edited Mar 9 at 2:28

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644

import React, useState, useEffect, useRef from 'react'

export default () => 
 const [height, setHeight] = useState(0)
 const ref = useRef(null)

 useEffect(() => 
 setHeight(ref.current.clientHeight)
 )

 return (
 <div ref=ref>
 height
 </div>
 )

share|improve this answer

edited Mar 9 at 2:28

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644

answered Feb 23 at 12:57

Mr. 14Mr. 14

4,75122644