javascript中有什么东西可以将“August”转换为8吗?

只需在那个月创建一个日期,解析它,然后使用 getMonth() 这样地

function convertMonthNameToNumber(monthName) {
    var myDate = new Date(monthName + " 1, 2000");
    var monthDigit = myDate.getMonth();
    return isNaN(monthDigit) ? 0 : (monthDigit + 1);
}

alert(convertMonthNameToNumber("August"));     //returns 8
alert(convertMonthNameToNumber("Augustsss"));  //returns 0 (or whatever you change the default too)
alert(convertMonthNameToNumber("Aug"));        //returns 8 - Bonus!
alert(convertMonthNameToNumber("AuGust"));     //returns 8 - Casing is irrelevant!

var monthtbl = { 'January': 1, 'February': 2, /* ... */, 'August', 8, /* ... */, 'December': 12 };
// ...
var monthNumber = monthtbl[monthName];

编辑 但是按照@Chad建议的方式去做:-)

如果您想使它对字母大小写不敏感,您可以创建一个全部小写的对象(“monthtbl”),然后使用

var monthNumber = monthtbl[monthName.toLowerCase()];

您可以在代码中创建一个数组(名称/值对),因为它只有12个月的时间,并编写一个函数来完成。

var months = {August: 8};

$.inArry() ,如下所示:

var months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
function getMonth(name) {
  return $.inArray(name, months) +1;
}

function monthToNumber(month) {
    return new Date(Date.parse("1 "+month)).getMonth()+1;
}

这里的值保存月份名称值

var month1 = value;
month1 = month1.toLowerCase();
var months = [ "January", "February", "March", "April", "May", "June",   "July", "August", "September", "October", "November", "December" ];
month1 = months.indexOf(month1);