javascript - Typescript 中的类型 'getWeek' 上不存在属性 'Date'

Question

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Answer 1

您需要使用接口(interface)合并在Date 接口(interface)上声明该方法

declare global {
    interface Date {
        getWeek (start?: number) : [Date, Date]
    }
}
Date.prototype.getWeek = function(start)
{
    start = start || 0;
    var today = new Date(this.setHours(0, 0, 0, 0));
    var day = today.getDay() - start;
    var date = today.getDate() - day;

    var StartDate = new Date(today.setDate(date));
    var EndDate = new Date(today.setDate(date + 6));
    return [StartDate, EndDate];
}

var Dates = new Date().getWeek();

或者如果你没有使用模块:

interface Date {
    getWeek (start?: number) : [Date, Date]
}