typescript 成员变量的使用

最新推荐文章于 2024-09-12 09:52:07 发布

weixin_30822451

最新推荐文章于 2024-09-12 09:52:07 发布

阅读量647

点赞数

CC 4.0 BY-SA版权

文章标签： javascript c# ViewUI

原文链接：http://www.cnblogs.com/ByronWu12345/p/4806492.html

本文介绍了一个使用TypeScript实现的员工类，该类通过私有变量存储全名，并利用权限码进行全名更新的验证。此外，还展示了如何定义带有静态属性的Grid类，用于计算不同比例尺下某点到原点的距离。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

注意，这个和C#的写法不太一样：

var passcode = "secret passcode";

class Employee {
    private _fullName: string;

    get fullName(): string {
        return this._fullName;
    }

    set fullName(newName: string) {
        if (passcode && passcode == "secret passcode") {
            this._fullName = newName;
        }
        else {
            alert("Error: Unauthorized update of employee!");
        }
    }
}

var employee = new Employee();
employee.fullName = "Bob Smith";
if (employee.fullName) {
    alert(employee.fullName);
}

设置静态属性：

class Grid {
    static origin = { x: 0, y: 0 };
    calculateDistanceFromOrigin(point: { x: number; y: number; }) {
        var xDist = (point.x - Grid.origin.x);
        var yDist = (point.y - Grid.origin.y);
        return Math.sqrt(xDist * xDist + yDist * yDist) / this.scale;
    }
    constructor(public scale: number) { }
}

var grid1 = new Grid(1.0);  // 1x scale
var grid2 = new Grid(5.0);  // 5x scale

alert(grid1.calculateDistanceFromOrigin({ x: 10, y: 10 }));
alert(grid2.calculateDistanceFromOrigin({ x: 10, y: 10 }));

转载于:https://www.cnblogs.com/ByronWu12345/p/4806492.html