I have a button which appears on the screen till the window width is 300px and after that, it disappears.
Here is the code:
<button className='Button'>Submit</button>
CSS code:
.Button{
color: cyan;
#media( min-width: 300px){
display: none;
}
}
For testing, I am using react testing library and jest. Please guide me on how to test resize events.
Related
I'm using a Switch component from Material UI to expand/collapse elements in a list. And when seeing the page in Safari on iOS, I'm experiencing a ghosting issue where the switches in the next elements often remain visible after expanding an element. This is especially bad when using transitions. But when scrolling the ghost switches disappear and everything looks fine.
Is this a Material UI issue or something else? Anything I can do as a workaround?
https://codesandbox.io/s/material-ui-switch-ghost-issue-2ie26?file=/src/App.js
The Switch ripple animation and Item animation are flighting for resources to do the animations and Safari seems like it is not able to optimise the animation process.
Therefore, you can add will-change: transform; in Item css to notify browser there will be a transform event and be ready:
const Item = styled.div`
max-height: ${({ $isSelected }) => ($isSelected ? "20rem" : "2.5rem")};
will-change: transform;
transition: max-height 0.1s ease-out;
overflow: hidden;
background: gray;
margin-bottom: 0.2rem;
`;
The definition of will-change:
https://developer.mozilla.org/en-US/docs/Web/CSS/will-change
Workable codesandbox:
https://codesandbox.io/s/material-ui-switch-ghost-issue-forked-fgqqx
I have made a transparent background tabbar on my ionic/angular app. I have the following code in my app.scss
.tabbar {
background: transparent !important;
border: none !important;
}
.tabs-ios .tabbar {
background: transparent !important;
border: none !important;
}
.ion-tabs {
background: transparent !important;
border: none !important;
}
It works fine when I test in the browser, but when I test with ionic view app, there is still a stock tabbar showing on the first page loaded by tabs page. Tabs are transparent on every other page, except the first one that is the "home" page.
Does anyone know why this is? Is this just a bug in the exceptionally unreliable Ionic View app or a problem I should be trying to fix?
I'm trying to create a React app that is optimized for mobile and am doing most of the layout using flexbox. I'm having trouble forcing the main container of my app to automatically expand to the full device height.
What rules can I apply, specifically to my html container <div id="react-app"></div> and my main app container <App></App> so that they will always stretch to the full screen height, even when their children wouldn't force them to do so?
You can use
height:100vh
for your App component, but it can looks not perfect on iOS Safari. Also you can set
html, body, #reactapp, .App {
height: 100%;
}
.App {
display: flex;
}
patelarpan's answer here seems to be the most concise solution:
You can achieve this by using "vh" units, and it's a more effective way than using percentages because you don't need to set every parent height to 100% if you want the child's height to be 100%.
.columnContainer {
display: flex;
height: calc(100vh - 60px);
}
Here is an example of the 60px app bar height being excluded from the viewport height.
I replaced the height line in patelarpan's example with this, since I don't have an app bar:
height: 100vh;
root > [data-reactroot] { height: 100% } in your CSS should work.
Or just the tag itself:
[data-reactroot] { ... }
All:
Im pretty new to React, I wonder how can I implement a Header Menu + Side Menu component layout in React?
It should be something like:
Click the orange header menu item, according side menu(the dark grey part on the left, there is no the dark grey part shown initial, only show when click according item in the header menu) will show up, click same item again, it will slide left to toggle. And the content area will auto scale.
Any help about how to implement this will be appreciated, it does not have to be a total solution, somethign like how to click and side menu toggle slide out or how scale the right side when left side menu slide out, or something like that.
Thanks
Theres too much in this question to give a full answer. So I'm just going to give a simple layout design with no code. You should be able to write the code yourself with this setup as it should be very straight forward.
you need a main component that renders the Header, Sidebar and Content of the page.
the header main component needs to handle an open or closed state based on the header clicks. so header item onClick(this.props.onClick). the props.onClick is passed to the header component and the main component needs to capture that and set a state.
this.setState({sidebarOpen: !this.state.sidebarOpen}); this will sumulate a toggle effect on the state for the click. now when you render just set a className based on that state.
let sidebarClassname = this.state.sidebarOpen ? 'sidebar open' : 'sidebar';
let contentClassname = this.state.sidebarOpen ? 'content open' : 'content';
and pass that through on the render to your component.
<Sidebar className={sidebarClassname}
<Content className={contentClassname}
from here you should have the components rendering and the sidebar should be getting an active class when you click on the header. then you just need to style it
the layout itself should be fairly simple.
css
.header {
position: absolute;
top: 0;
left: 0;
right: 0;
height: 60px;
}
.sidebar {
position: absolute;
top: 60px;
left: -300px;
height: 100%;
width: 300px;
transition: left .3s ease-in-out;
}
.content {
position: absolute;
top: 60px;
left: 0;
right: 0;
height: 100%;
transition: left .3s ease-in-out;
}
that should be pretty straight forward. you need to position the sidebar out of the page and the content needs to fill the page
the cool part here is when you get an active class (i.e open) you should be able to adjust the left position to create the slide in effect (because we added the css transition on the left property.
.sidebar.open {
left: 0;
}
.content.open {
left: 300px;
}
Sample Fiddle
I am working on this project. I have an angular-google-map directive. I am overwritting defaults markers with labelClass.
CSS is working fine but does not hover.
.marker {
color: white;
border: 2px white solid;
border-radius: 50px;
text-align: center;
font-size: 20px;
letter-spacing: 0.1em;
font-weight: bold;
}
.marker:hover {
background-color: #C52183;
animation: pulse 1s;
}
/* ANIMATIONS */
#keyframes pulse {
50% {
transform: scale(4);
}
100% {
transform: scale(1);
}
}
If you check the example you can see an animation but not with real color. I sometimes get the real animation.
The full project is here.
pd: The problem can't be the animation, if i just try to change some css properties i dont get effect, so i think that the problem is with google maps and css.
I finally fixed this "bug".
The problem was on the MarkerWithLabel library but really isn't a bug, its just an impossibility (with this library). Checking the library we see :
// Set up the DIV for handling mouse events in the label. This DIV forms a transparent veil
// in the "overlayMouseTarget" pane, a veil that covers just the label. This is done so that
// events can be captured even if the label is in the shadow of a google.maps.InfoWindow.
// Code is included here to ensure the veil is always exactly the same size as the label.
this.eventDiv_ = document.createElement("div");
this.eventDiv_.style.cssText = this.labelDiv_.style.cssText;
I just modified the library so i don't create invisible div anymore and also i intercept events with real label. Now it's working under my requirements.
more info about the problem
demo working