Web developer specializing in React, Vue, and front end development.
To use saved image with React, we can call require with the image path to and set the returned path as the value of the src prop of the img element.
For instance, we write
<img alt="timer" src={require('./images/timer.png')} />
to add an img element with the src prop set to the path returned by calling require with the local image path.
To add an SVG with React, we can import it as a component and add it directly into our components.
For instance, we write
import React from "react";
import { ReactComponent as BrandIcon } from "./assets/brand-icon.svg";
export default function () {
return (
<div>
<BrandIcon />
</div>
);
}
to import the BrandIcon SVG and put it into our component to render it.
<Grid container spacing={24}>
<Grid item xs={4}>
<TextField
label="PS"
value={ps}
onChange={handleChange}
margin="normal"
type="number"
margin="dense"
variant="filled"
/>
</Grid>
<Grid item xs={4}>
<TextField
label="MOOE"
value={mode}
onChange={handleChange}
margin="normal"
type="number"
margin="dense"
variant="filled"
/>
</Grid>
<Grid item xs={4}>
<TextField
label="CO"
value={co}
onChange={handleChange}
margin="normal"
type="number"
margin="dense"
variant="filled"
/>
</Grid>
</Grid>;
to add our TextFields into Grid components.
We set the width relative to the screen’s width with xs to set the width to 4 out of 12 of the screen width for all screen sizes.
The inner Grids has the item prop to make them an item inside the Grid with the container prop.
To hide the navigation navbar with React Native, we set the screenOptions.headerShown option to false.
For instance, we write
<Stack.Navigator
screenOptions={{
headerShown: false,
}}
>
...
</Stack.Navigator>;
to set the headerShown option of the screenOptions prop object to false on the Stack.Navigator to hide the navbar.
Sometimes, we want to get the time difference between 2 dates in seconds with JavaScript.
In this article, we’ll look at how to get the time difference between 2 dates in seconds with JavaScript.
We can convert the dates to timestamps in milliseconds.
Then we can subtract them to get the difference between them.
And then we can convert the difference in milliseconds to seconds.
For instance, we can write:
const startDate = new Date(2020, 1, 1);
const endDate = new Date(2020, 2, 1);
const seconds = (endDate.getTime() - startDate.getTime()) / 1000;
console.log(seconds)
We have the startDate and endDate which we can convert both to timestamps in milliseconds with getTime .
Then we subtract the timestamp of endDate by the timestamp of startDate .
This will return the timestamp difference in milliseconds.
So we divide the difference by 1000 to get the difference in seconds.
Therefore, seconds should be 2505600 .
We can replace getTime with the unary + operator.
For instance, we can write:
const startDate = new Date(2020, 1, 1);
const endDate = new Date(2020, 2, 1);
const seconds = (+endDate - +startDate) / 1000;
console.log(seconds)
to convert startDate and endDate to timestamps with the unary + operator.
And we get the same result as before.
We can get the time difference between 2 dates in seconds by converting them both to timestamps.
Then we can subtract the timestamps and convert the difference to seconds.