How to Convert a Javascript Date Object to YYYYMMDD String?

Straightforward Conversion of JS Date Object to YYYYMMDD String

When converting a JavaScript date object to a string in the YYYYMMDD format, a straightforward method is to concatenate the values of Date.getYear(), Date.getMonth(), and Date.getDay(). However, this approach can be cumbersome.

Simplified Code for YYYYMMDD Conversion

To simplify this process, a modified piece of code can be utilized:

Date.prototype.yyyymmdd = function() {
  var mm = this.getMonth() + 1; // getMonth() is zero-based
  var dd = this.getDate();

  return [this.getFullYear(),
          (mm>9 ? '' : '0') + mm,
          (dd>9 ? '' : '0') + dd
         ].join('');
};

This altered prototype method enhances the Date object by providing a "yyyymmdd" function that directly generates the desired string in YYYYMMDD format. The code ensures that single-digit months and days are zero-padded for a complete eight-character output.

Example Usage

To utilize this method, create a new Date object and invoke the "yyyymmdd()" function to obtain the string in YYYYMMDD format:

var date = new Date();
date.yyyymmdd();

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