How to use typescript
This article mainly explains "how to use typescript". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn how to use typescript.
Basic type
Strings, numbers, Boolean
Let name: string = 'little fairy'
Let age: number = 18
Let sex: boolean = false
Array
Let names: Array = ['little fairy', 'Ken']
Let ages: number [] = [18,20]
Let sexs: boolean [] = [false, true]
Let anys: any [] = ['1customers, 2, true]
Function parameter type, return value type
Function call (me: string | number | boolean): any {
Return me
}
Object Typ
Let obj: {x: number, y: number} = {x: 10, y: 100}
Optional attribute
/ / basic types
Let name: string = 'little fairy'
Let age: number = 18
Let sex: boolean = false
/ / array
Let names: Array = ['little fairy', 'Ken']
Let ages: number [] = [18,20]
Let sexs: boolean [] = [false, true]
/ / function
Function call (me: string | number | boolean): any {
Return me
}
/ / object type
Let obj: {x: number; y: number} = {x: 10, y: 100}
/ / optional attribute
Let person: {name: string; age: number; sex?: boolean} = {name, age}
Type Typ
/ / object type
Let obj: {x: number; y: number} = {x: 10, y: 100}
/ / optional attribute
Let person: {name: string; age: number; sex?: boolean} = {name, age}
/ / Type alias
Type Point = {
X: number
Y: number
}
Function printCoord (pt: Point): void {
Console.log (pt)
}
PrintCoord (obj)
Interface
/ / API
Interface Pt {
X: number
Y: number
}
Function printCoord1 (pt: Pt): void {
Console.log (pt)
}
PrintCoord1 (obj)
At this point, I believe you have a deeper understanding of "how to use typescript". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!
