Other symbols are available for printing out the month names, day of week names, and more. This format prints dates that look like “5” for October 15 th, 2005. Each of the three parts has a special meaning “yyyy” means print the year out as 4 digits, “mm” means print the month as 2 digits, and “dd” means print the day of the month out as 2 digits. The “/” is a literal, it will be printed out verbatim to the string. In the example above, “yyyy/mm/dd”, has three parts separated by the “/” character. It’s composed of a series of symbols that represent the different parts of a date and time, like the year, month, day, hour, etc. The first argument to the util.printd() function is a string describing the format of the date and/or time. This function is much better than the date string functions built into the Date Object because it allows us to create almost any custom date format we want. This is where the actual text format of the date string is decided with the util.printd() function. The other half of the line (the part on the right side of the equals symbol), is more interesting. This field property represents the value displayed on the page. The next line assigns a date string to the field’s value. If this field does not exist the code will fail. It is assumed there is a text field on the document with the name “DateField”. The first part, var fld = this.getField("DateField") ,acquires the field object into which the date will be written. There’s a lot to these two lines of code so let’s look at it piece by piece. var fld = this.getField("DateField") fld.value = util.printd("yyyy/mm/dd",new Date()) The code below writes the current date into a form field using a simple date format.
One issue that always comes up is deciding how the date should be formatted. The simplest use is displaying a Date or Time in a Form Field.
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Part 2 of 3 Placing Dates in a Form Fieldĭates and Times are used for a multitude of purposes in PDF documents.