Cost of referencing “window.[height/width/etc]” in JavaScript
I've been struggling to find a definitive answer as to whether or not referencing window.height/width/something repeatedly is something that can affect performance in website loading times.
I've got some React components that reference window.height and window.width in state (without a resize listener), and I'm wondering if it makes more sense to pass down window dimensions from some parent component in order to improve performance.
I'm guessing it won't really make a difference for several components to be referencing window dimensions when the site loads rather than a single one, but that's just a guess.
Thoughts?
javascript reactjs
edited Nov 12 '18 at 3:31
Laura
1,422720
asked Nov 12 '18 at 3:04
David CDavid C
114
add a comment |
I've been struggling to find a definitive answer as to whether or not referencing window.height/width/something repeatedly is something that can affect performance in website loading times.
I've got some React components that reference window.height and window.width in state (without a resize listener), and I'm wondering if it makes more sense to pass down window dimensions from some parent component in order to improve performance.
I'm guessing it won't really make a difference for several components to be referencing window dimensions when the site loads rather than a single one, but that's just a guess.
Thoughts?
javascript reactjs
edited Nov 12 '18 at 3:31
Laura
1,422720
asked Nov 12 '18 at 3:04
David CDavid C
114
add a comment |
I've been struggling to find a definitive answer as to whether or not referencing window.height/width/something repeatedly is something that can affect performance in website loading times.
I've got some React components that reference window.height and window.width in state (without a resize listener), and I'm wondering if it makes more sense to pass down window dimensions from some parent component in order to improve performance.
I'm guessing it won't really make a difference for several components to be referencing window dimensions when the site loads rather than a single one, but that's just a guess.
Thoughts?
javascript reactjs
edited Nov 12 '18 at 3:31
Laura
1,422720
asked Nov 12 '18 at 3:04
David CDavid C
114
I've been struggling to find a definitive answer as to whether or not referencing window.height/width/something repeatedly is something that can affect performance in website loading times.
I've got some React components that reference window.height and window.width in state (without a resize listener), and I'm wondering if it makes more sense to pass down window dimensions from some parent component in order to improve performance.
I'm guessing it won't really make a difference for several components to be referencing window dimensions when the site loads rather than a single one, but that's just a guess.
Thoughts?
javascript reactjs
javascript reactjs
edited Nov 12 '18 at 3:31
Laura
1,422720
asked Nov 12 '18 at 3:04
David CDavid C
114
edited Nov 12 '18 at 3:31
Laura
1,422720
asked Nov 12 '18 at 3:04
David CDavid C
114
edited Nov 12 '18 at 3:31
Laura
1,422720
edited Nov 12 '18 at 3:31
Laura
1,422720
edited Nov 12 '18 at 3:31
Laura
1,422720
1,422720
asked Nov 12 '18 at 3:04
David CDavid C
114
asked Nov 12 '18 at 3:04
David CDavid C
114
asked Nov 12 '18 at 3:04
David CDavid C
114
114
add a comment |
add a comment |
1 Answer
1
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oldest
votes
It's always a bad idea to poll repeatedly. There will be some cost. And it's good practice to let your components react to the change rather than poll for it.
Try rxJs Observable fromEvent
Observable.fromEvent(window, 'resize')
.debounceTime(1500)
.subscribe((event) =>
this.doSmth(event);
);
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It's always a bad idea to poll repeatedly. There will be some cost. And it's good practice to let your components react to the change rather than poll for it.
Try rxJs Observable fromEvent
Observable.fromEvent(window, 'resize')
.debounceTime(1500)
.subscribe((event) =>
this.doSmth(event);
);
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
add a comment |
It's always a bad idea to poll repeatedly. There will be some cost. And it's good practice to let your components react to the change rather than poll for it.
Try rxJs Observable fromEvent
Observable.fromEvent(window, 'resize')
.debounceTime(1500)
.subscribe((event) =>
this.doSmth(event);
);
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
add a comment |
It's always a bad idea to poll repeatedly. There will be some cost. And it's good practice to let your components react to the change rather than poll for it.
Try rxJs Observable fromEvent
Observable.fromEvent(window, 'resize')
.debounceTime(1500)
.subscribe((event) =>
this.doSmth(event);
);
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
It's always a bad idea to poll repeatedly. There will be some cost. And it's good practice to let your components react to the change rather than poll for it.
Try rxJs Observable fromEvent
Observable.fromEvent(window, 'resize')
.debounceTime(1500)
.subscribe((event) =>
this.doSmth(event);
);
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
answered Nov 12 '18 at 3:53
AbhiAbhi
3518
3518
add a comment |
add a comment |
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