javascript - 如何将星期几名称转换为星期几

Question

我怎样才能得到相当于星期几的整数，即 monday 到 2，tuesday 到 3、星期三 到 4 等？

这是我的:

var days  = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'];

我需要做的

console.log(days['monday']) //i need to see the integer 2
console.log(days['tuesday']) //i need to see the integer 3   

Answer 1

可以使用查找对象:

var days = {
    sunday: 1,
    monday: 2,
    tuesday: 3,
    wednesday: 4,
    thursday: 5,
    friday: 6,
    saturday: 7
}

console.log(days["sunday"]) //1

现在，只需访问上述任何属性，它的值就是星期几!

console.log(days["monday"]) //2