JavaScript 中选择框的年份范围 [英] Range of Years in JavaScript for a select box
问题描述
我正在尝试在 JavaScript 中创建一个动态选择框,其中包含从某个"年份开始到当前年份结束的年份.JavaScript中有没有像Ruby的 range 类的东西,还是我必须循环多年来使用 for 循环?
I'm trying to create a dynamic select box in JavaScript with a range of years starting with 'some' year and ending with the current year. Is there anything like Ruby's range class in JavaScript or do I have to loop trough the years using a for loop?
这就是我想出的,尽管我认为在 Ruby 中考虑的有点多,我可以只使用一个范围.
Here's what I've come up with though I think it's a bit much considering in Ruby I can just use a range.
this.years = function(startYear){
startYear = (typeof(startYear) == 'undefined') ? 1980 : startYear
var currentYear = new Date().getFullYear();
var years = []
for(var i=startYear;i<=currentYear;i++){
years.push(i);
}
return years;
}
推荐答案
JavaScript 确实有 Range 对象,但它指的是 DOM 的任意部分,IE 6/7 不支持.
JavaScript does have a Range object, but it refers to an arbitrary portion of the DOM and is not supported in IE 6/7.
如果你愿意,你可以把你的函数简化成这样,但其实都是一样的.
If you want, you can simplify your function to this, but it's all the same really.
this.years = function(startYear) {
var currentYear = new Date().getFullYear(), years = [];
startYear = startYear || 1980;
while ( startYear <= currentYear ) {
years.push(startYear++);
}
return years;
}
console.log( this.years(2019-20));
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