Then we’ll set Loading to true and error to false, like this. But I think this is actually kind of neat, because you can do it on one roll like this, before you have something that’s called with router that you can wrap your component with. So this one is going to spread all the props that this component receives that way, we can have more props, if we want to do that. I don’t really like this way of doing it anymore, especially with the state because you have to nest a lot of stuff here.
- I think a lot of people now are starting to use TypeScript with react.
- And this one is the one that you import from the library that’s called prop types.
- The Spread Syntax (also known as the Spread Operator) is another excellent feature of ES6.
- Because inside of this movies property that we created up here, we’re going to place everything that’s returned from the Movie Database API.
- And as you can see here, in the room component, I’m creating two states.
We’re going to import them from dotnet, forward slash config, like this, and be very careful here with the spelling all capital letters and underscore. So for this one, I’m going to set the width to 80 pixels, and save it, go back to the application. And this is also something that’s super great with styled components, because you can nest the media queries as I did inside of this component.
🟢 Theming in React
We can also send functions as props, so a child component can call a function in the parent component. UseState() accepts the initial value of the state item and returns an array containing the state variable, and the function you call to alter the state. In React, or in any other components-based framework/library, all our applications are based on and make heavy use of components’ state.
So we have a coma, and I create an inline arrow function here and go on another row here. The movies dot results is going to be the same here because this is the new data that we grabbed from the API, so we merge that one. But here we have to change this one because from the previous state, we also have to go inside the movies property, like this.
And as this is also e6 syntax, I don’t have to type out this twice, because it will interpret this automatically. We’re going to wait from the API, I have this function GET request token. I actually noticed now also that I forgot to bump up the font size. And if the name equals password, we’re going to set the password state. So we set the name of the input box, and then we get the value. So I do it like this instead, in a small application like this, I think this is more readable, actually.
I’m going to export it also because we’re going to import this one in our home component and use this custom hooked, export const use home sets. We want to return an object and an object also is marked with the curly brackets. In this case, we can just call fetch movies, we’re going to send in one, because we want to fetch the first page, we can also mark this one actually with initial render. And then we can also send in React by Example Lessons the search term, we haven’t actually created this one yet, because this one is going to be another state when we create the search bar. And if we take a quick look at this fetch movies, here, you can see that this one has two parameters of search term and page. So that one we imported in the last video, and we initialized it and set it up in the home component, we’re also going to use the hook that’s called use effect.
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We have the angle brackets again, and we send in the props like this. We set up one as a string, the children, we don’t need to type that one because that’s built in to react. It knows the types now of these props, you can see if we hover over them, you can see the types.
Because it’s really important, because we need that one to be able to fetch data from the Movie Database API, we have copied all the files that we need for our TypeScript project. If we look here, with create react app, we can flag it with template and TypeScript. In the next video, we’re going to set up a project and start refactoring our application into using TypeScript.
Us home fetch homefacts like this, save the file, go back to the browser. We console log in out to state so save this file, make sure that you also save the hook itself. And yet again, I’m going to use ESX destructure syntax to get those properties from the object that we exported here. In the next video, we’re going to take all this logic here and create our own custom hook and place that data inside of there. All right, that’s how you fetch data from the Movie Database API with a use effect hook and then you put it in the state with the use state hook. And some may say and go crazy, oh, we have a lot who renders that crazy, it will make this application so slow.
And then we’ll create a new file index dot j, s, and then another file inside of that folder, that’s called movie info, dot styles dot j s. So in the hooks folder, let’s create a new file that’s called use movie, fetch capital M, capital F, and dot j s. Move back inside of the code editor and inside the components folder, create a new folder that you call thumb, capital T inside of that folder, you create a new file that’s called index dot j s.