Typescript Date Type

Question

How do I express dates in TypeScript  Dates aren t a TypeScript type  so do I use any or object  Seems like there would be a  right  way to do   let myDate  any   new Date      I couldn t find much on Google  despite it being such a simple question

User · Accepted Answer

The answer is super simple  the type is Date   const d  Date   new Date       but the type can also be inferred from  new Date    already   It is the same as with every other object instance

User · Answer

Every class or interface can be used as a type in TypeScript    const date   new Date      will already know about the date type definition as Date is an internal TypeScript object referenced by the DateConstructor interface   And for the constructor you used  it is defined as   interface DateConstructor       new    Date              To make it more explicit  you can use    const date  Date   new Date      You might be missing the type definitions though  the Date is coming for my example from the ES6 lib  and in my tsconfig json I have defined    compilerOptions          target    ES6        lib              es6            dom           You might adapt these settings to target your wanted version of JavaScript     The Date is by the way an Interface from lib es6 d ts       Enables basic storage and retrieval of dates and times     interface Date           Returns a string representation of a date  The format of the string depends on the locale         toString    string          Returns a date as a string value         toDateString    string          Returns a time as a string value         toTimeString    string          Returns a value as a string value appropriate to the host environment s current locale         toLocaleString    string          Returns a date as a string value appropriate to the host environment s current locale         toLocaleDateString    string          Returns a time as a string value appropriate to the host environment s current locale         toLocaleTimeString    string          Returns the stored time value in milliseconds since midnight  January 1  1970 UTC         valueOf    number          Gets the time value in milliseconds         getTime    number          Gets the year  using local time         getFullYear    number          Gets the year using Universal Coordinated Time  UTC          getUTCFullYear    number          Gets the month  using local time         getMonth    number          Gets the month of a Date object using Universal Coordinated Time  UTC          getUTCMonth    number          Gets the day-of-the-month  using local time         getDate    number          Gets the day-of-the-month  using Universal Coordinated Time  UTC          getUTCDate    number          Gets the day of the week  using local time         getDay    number          Gets the day of the week using Universal Coordinated Time  UTC          getUTCDay    number          Gets the hours in a date  using local time         getHours    number          Gets the hours value in a Date object using Universal Coordinated Time  UTC          getUTCHours    number          Gets the minutes of a Date object  using local time         getMinutes    number          Gets the minutes of a Date object using Universal Coordinated Time  UTC          getUTCMinutes    number          Gets the seconds of a Date object  using local time         getSeconds    number          Gets the seconds of a Date object using Universal Coordinated Time  UTC          getUTCSeconds    number          Gets the milliseconds of a Date  using local time         getMilliseconds    number          Gets the milliseconds of a Date object using Universal Coordinated Time  UTC          getUTCMilliseconds    number          Gets the difference in minutes between the time on the local computer and Universal Coordinated Time  UTC          getTimezoneOffset    number                  Sets the date and time value in the Date object           param time A numeric value representing the number of elapsed milliseconds since midnight  January 1  1970 GMT               setTime time  number   number                  Sets the milliseconds value in the Date object using local time           param ms A numeric value equal to the millisecond value               setMilliseconds ms  number   number                  Sets the milliseconds value in the Date object using Universal Coordinated Time  UTC            param ms A numeric value equal to the millisecond value               setUTCMilliseconds ms  number   number                   Sets the seconds value in the Date object using local time           param sec A numeric value equal to the seconds value           param ms A numeric value equal to the milliseconds value               setSeconds sec  number  ms   number   number                  Sets the seconds value in the Date object using Universal Coordinated Time  UTC            param sec A numeric value equal to the seconds value           param ms A numeric value equal to the milliseconds value               setUTCSeconds sec  number  ms   number   number                  Sets the minutes value in the Date object using local time           param min A numeric value equal to the minutes value           param sec A numeric value equal to the seconds value           param ms A numeric value equal to the milliseconds value               setMinutes min  number  sec   number  ms   number   number                  Sets the minutes value in the Date object using Universal Coordinated Time  UTC            param min A numeric value equal to the minutes value           param sec A numeric value equal to the seconds value           param ms A numeric value equal to the milliseconds value               setUTCMinutes min  number  sec   number  ms   number   number                  Sets the hour value in the Date object using local time           param hours A numeric value equal to the hours value           param min A numeric value equal to the minutes value           param sec A numeric value equal to the seconds value           param ms A numeric value equal to the milliseconds value               setHours hours  number  min   number  sec   number  ms   number   number                  Sets the hours value in the Date object using Universal Coordinated Time  UTC            param hours A numeric value equal to the hours value           param min A numeric value equal to the minutes value           param sec A numeric value equal to the seconds value           param ms A numeric value equal to the milliseconds value               setUTCHours hours  number  min   number  sec   number  ms   number   number                  Sets the numeric day-of-the-month value of the Date object using local time           param date A numeric value equal to the day of the month               setDate date  number   number                  Sets the numeric day of the month in the Date object using Universal Coordinated Time  UTC            param date A numeric value equal to the day of the month               setUTCDate date  number   number                  Sets the month value in the Date object using local time           param month A numeric value equal to the month  The value for January is 0  and other month values follow consecutively           param date A numeric value representing the day of the month  If this value is not supplied  the value from a call to the getDate method is used               setMonth month  number  date   number   number                  Sets the month value in the Date object using Universal Coordinated Time  UTC            param month A numeric value equal to the month  The value for January is 0  and other month values follow consecutively           param date A numeric value representing the day of the month  If it is not supplied  the value from a call to the getUTCDate method is used               setUTCMonth month  number  date   number   number                  Sets the year of the Date object using local time           param year A numeric value for the year           param month A zero-based numeric value for the month  0 for January  11 for December   Must be specified if numDate is specified           param date A numeric value equal for the day of the month               setFullYear year  number  month   number  date   number   number                  Sets the year value in the Date object using Universal Coordinated Time  UTC            param year A numeric value equal to the year           param month A numeric value equal to the month  The value for January is 0  and other month values follow consecutively  Must be supplied if numDate is supplied           param date A numeric value equal to the day of the month               setUTCFullYear year  number  month   number  date   number   number          Returns a date converted to a string using Universal Coordinated Time  UTC          toUTCString    string          Returns a date as a string value in ISO format         toISOString    string          Used by the JSON stringify method to enable the transformation of an object s data for JavaScript Object Notation  JSON  serialization         toJSON key   any   string

User · Answer

Typescript recognizes the Date interface out of the box - just like you would with a number  string  or custom type  So Just use    myDate   Date

[date] Typescript Date Type?

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