Run render and reconciler on children only
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
I want to skip rendering of container, but run rendering and reconciliation for the childeren
passed via props
. In the next example you can click it and see
render
render2
render value 2001
render value 3001
but I want it to be
render
render value 1001
render2
render value 2001
render value 3001
So I want Value
1001
to render, but without rendering Wrapper1
.
How can I do that?
class Value extends React.Component {
render() {
console.log("render value " + this.props.value);
return this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} /></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
reactjs
add a comment |
I want to skip rendering of container, but run rendering and reconciliation for the childeren
passed via props
. In the next example you can click it and see
render
render2
render value 2001
render value 3001
but I want it to be
render
render value 1001
render2
render value 2001
render value 3001
So I want Value
1001
to render, but without rendering Wrapper1
.
How can I do that?
class Value extends React.Component {
render() {
console.log("render value " + this.props.value);
return this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} /></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
reactjs
Why do you needWrapper1
? And why do you want to skip rendering it? Check stackoverflow.com/questions/30626030/…
– UjinT34
Nov 26 '18 at 14:20
add a comment |
I want to skip rendering of container, but run rendering and reconciliation for the childeren
passed via props
. In the next example you can click it and see
render
render2
render value 2001
render value 3001
but I want it to be
render
render value 1001
render2
render value 2001
render value 3001
So I want Value
1001
to render, but without rendering Wrapper1
.
How can I do that?
class Value extends React.Component {
render() {
console.log("render value " + this.props.value);
return this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} /></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
reactjs
I want to skip rendering of container, but run rendering and reconciliation for the childeren
passed via props
. In the next example you can click it and see
render
render2
render value 2001
render value 3001
but I want it to be
render
render value 1001
render2
render value 2001
render value 3001
So I want Value
1001
to render, but without rendering Wrapper1
.
How can I do that?
class Value extends React.Component {
render() {
console.log("render value " + this.props.value);
return this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} /></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
class Value extends React.Component {
render() {
console.log("render value " + this.props.value);
return this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} /></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
class Value extends React.Component {
render() {
console.log("render value " + this.props.value);
return this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} /></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
reactjs
reactjs
asked Nov 26 '18 at 13:58
QwertiyQwertiy
7,47052365
7,47052365
Why do you needWrapper1
? And why do you want to skip rendering it? Check stackoverflow.com/questions/30626030/…
– UjinT34
Nov 26 '18 at 14:20
add a comment |
Why do you needWrapper1
? And why do you want to skip rendering it? Check stackoverflow.com/questions/30626030/…
– UjinT34
Nov 26 '18 at 14:20
Why do you need
Wrapper1
? And why do you want to skip rendering it? Check stackoverflow.com/questions/30626030/…– UjinT34
Nov 26 '18 at 14:20
Why do you need
Wrapper1
? And why do you want to skip rendering it? Check stackoverflow.com/questions/30626030/…– UjinT34
Nov 26 '18 at 14:20
add a comment |
2 Answers
2
active
oldest
votes
To rerender children without rerendering Wrapper1
you need to change their state somehow. Note that props
of Value
inside Wrapper1
never change. So forced renders will output the same value unless you pass it some other way. There is some bad code for example:
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
add a comment |
Try using shouldComponentUpdate
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
To rerender children without rerendering Wrapper1
you need to change their state somehow. Note that props
of Value
inside Wrapper1
never change. So forced renders will output the same value unless you pass it some other way. There is some bad code for example:
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
add a comment |
To rerender children without rerendering Wrapper1
you need to change their state somehow. Note that props
of Value
inside Wrapper1
never change. So forced renders will output the same value unless you pass it some other way. There is some bad code for example:
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
add a comment |
To rerender children without rerendering Wrapper1
you need to change their state somehow. Note that props
of Value
inside Wrapper1
never change. So forced renders will output the same value unless you pass it some other way. There is some bad code for example:
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
To rerender children without rerendering Wrapper1
you need to change their state somehow. Note that props
of Value
inside Wrapper1
never change. So forced renders will output the same value unless you pass it some other way. There is some bad code for example:
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
class Value extends React.Component {
state = {value: null};
componentDidMount() {
if (typeof(this.props.setUpdater) === 'function') this.props.setUpdater(
value => this.setState({value})
);
}
render() {
console.log("render value ", this.state.value, this.props.value);
return this.state.value || this.props.value;
}
}
class Wrapper1 extends React.Component {
shouldComponentUpdate() {
return false;
}
render() {
console.log("render1");
return this.props.children;
}
}
class Wrapper2 extends React.PureComponent {
render() {
console.log("render2");
return this.props.children;
}
}
class App extends React.Component {
state = { count: 0 };
render() {
console.log("render");
if (typeof(this.state.updater) === 'function') this.state.updater(1000 + this.state.count);
return (
<div onClick={() => this.setState(({ count }) => ({ count: count + 1 }))}>
<Wrapper1><Value value={1000 + this.state.count} setUpdater={updater => this.setState({updater})}/></Wrapper1>
{" "}
<Wrapper2><Value value={2000 + this.state.count} /></Wrapper2>
{" "}
<Value value={3000 + this.state.count} />
</div>
);
}
}
ReactDOM.render(<App />, document.querySelector("main"));
<script crossorigin src="https://unpkg.com/react@16/umd/react.production.min.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.production.min.js"></script>
<main></main>
answered Nov 26 '18 at 14:56
UjinT34UjinT34
2,0641213
2,0641213
add a comment |
add a comment |
Try using shouldComponentUpdate
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
add a comment |
Try using shouldComponentUpdate
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
add a comment |
Try using shouldComponentUpdate
Try using shouldComponentUpdate
answered Nov 26 '18 at 14:19
FawziFawzi
267110
267110
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
add a comment |
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
It's already in the example. How do you propose to use it?
– Qwertiy
Nov 26 '18 at 16:14
add a comment |
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Why do you need
Wrapper1
? And why do you want to skip rendering it? Check stackoverflow.com/questions/30626030/…– UjinT34
Nov 26 '18 at 14:20