When and how often does the component re-render as users type information in a form?
Let’s say there is a code below where I listen to the event with onChangeText inside MyTextInput class. I update the state in onChangeText, which means the component will re-render.
When and how often does the component re-render as users type information in a form? I’m asking because I don’t believe it’s a good practice to re-render unnecessarily when the users are still in the middle of typing information.
export default class MyTextInput extends Component {
this.state = { text: '' };
render() {
return (
<TextInput
style={{height: 40, borderColor: 'gray', borderWidth: 1}}
onChangeText={(text) => this.setState({text})}
value={this.state.text}
/>
);
}
}
react-native rendering
asked Nov 13 '18 at 6:27
sflow
6819
add a comment |
Let’s say there is a code below where I listen to the event with onChangeText inside MyTextInput class. I update the state in onChangeText, which means the component will re-render.
When and how often does the component re-render as users type information in a form? I’m asking because I don’t believe it’s a good practice to re-render unnecessarily when the users are still in the middle of typing information.
export default class MyTextInput extends Component {
this.state = { text: '' };
render() {
return (
<TextInput
style={{height: 40, borderColor: 'gray', borderWidth: 1}}
onChangeText={(text) => this.setState({text})}
value={this.state.text}
/>
);
}
}
react-native rendering
asked Nov 13 '18 at 6:27
sflow
6819
add a comment |
Let’s say there is a code below where I listen to the event with onChangeText inside MyTextInput class. I update the state in onChangeText, which means the component will re-render.
When and how often does the component re-render as users type information in a form? I’m asking because I don’t believe it’s a good practice to re-render unnecessarily when the users are still in the middle of typing information.
export default class MyTextInput extends Component {
this.state = { text: '' };
render() {
return (
<TextInput
style={{height: 40, borderColor: 'gray', borderWidth: 1}}
onChangeText={(text) => this.setState({text})}
value={this.state.text}
/>
);
}
}
react-native rendering
asked Nov 13 '18 at 6:27
sflow
6819
Let’s say there is a code below where I listen to the event with onChangeText inside MyTextInput class. I update the state in onChangeText, which means the component will re-render.
When and how often does the component re-render as users type information in a form? I’m asking because I don’t believe it’s a good practice to re-render unnecessarily when the users are still in the middle of typing information.
export default class MyTextInput extends Component {
this.state = { text: '' };
render() {
return (
<TextInput
style={{height: 40, borderColor: 'gray', borderWidth: 1}}
onChangeText={(text) => this.setState({text})}
value={this.state.text}
/>
);
}
}
react-native rendering
react-native rendering
asked Nov 13 '18 at 6:27
sflow
6819
asked Nov 13 '18 at 6:27
sflow
6819
asked Nov 13 '18 at 6:27
sflow
6819
asked Nov 13 '18 at 6:27
sflow
6819
asked Nov 13 '18 at 6:27
sflow
6819
6819
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The entire component doesn't re-render just the text box, read this for more information regarding setState and stopping multiple rendering https://itnext.io/react-setstate-usage-and-gotchas-ac10b4e03d60
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53275033%2fwhen-and-how-often-does-the-component-re-render-as-users-type-information-in-a-f%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The entire component doesn't re-render just the text box, read this for more information regarding setState and stopping multiple rendering https://itnext.io/react-setstate-usage-and-gotchas-ac10b4e03d60
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
add a comment |
The entire component doesn't re-render just the text box, read this for more information regarding setState and stopping multiple rendering https://itnext.io/react-setstate-usage-and-gotchas-ac10b4e03d60
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
add a comment |
The entire component doesn't re-render just the text box, read this for more information regarding setState and stopping multiple rendering https://itnext.io/react-setstate-usage-and-gotchas-ac10b4e03d60
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
The entire component doesn't re-render just the text box, read this for more information regarding setState and stopping multiple rendering https://itnext.io/react-setstate-usage-and-gotchas-ac10b4e03d60
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
answered Nov 13 '18 at 6:35
Naveed Sheriffdeen
424215
424215
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53275033%2fwhen-and-how-often-does-the-component-re-render-as-users-type-information-in-a-f%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
