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reactjs update state example

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HellGrav answered on November 22, 2020 Popularity 10/10 Helpfulness 1/10

answer reactjs update state example

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related how to update state.item[1] in state using setState? React

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reactjs update state example

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-1

You have to use setState() for updating state in React
{
  hasBeenClicked: false,
  currentTheme: 'blue',
}

setState({
	hasBeenClicked: true
});

Popularity 10/10 Helpfulness 1/10 Language javascript

Source: learn.co

Tags: javascript reactjs state

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Contributed on Nov 22 2020

HellGrav

0 Answers Avg Quality 2/10

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how to update state in react

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// Correct
this.setState(function(state, props) {
  return {
    counter: state.counter + props.increment
  };
});

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: reactjs.org

Tags: javascript j

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Contributed on May 09 2021

Cute Curlew

0 Answers Avg Quality 2/10

how to update state.item[1] in state using setState? React

Comment

handleChange: function (e) {
    // 1. Make a shallow copy of the items
    let items = [...this.state.items];
    // 2. Make a shallow copy of the item you want to mutate
    let item = {...items[1]};
    // 3. Replace the property you're intested in
    item.name = 'newName';
    // 4. Put it back into our array. N.B. we *are* mutating the array here, but that's why we made a copy first
    items[1] = item;
    // 5. Set the state to our new copy
    this.setState({items});
},

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Jul 17 2021

Disturbed Dugong

0 Answers Avg Quality 2/10

update state in react

Comment

You have to use setState() for updating state in React
{
  hasBeenClicked: false,
  currentTheme: 'blue',
}

setState({
	hasBeenClicked: true
});

Popularity 10/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Feb 23 2021

Wrong Wasp

0 Answers Avg Quality 2/10

reactjs update state example

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how to update state.item[1] in state using setState? React

update state in react

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