Select the code you wish to sort in Visual Studio Code.
Then hit the key combination Ctrl+P and type the greater than sign (>). Next type sort and choose Sort Lines Ascending or choose the Descending option.
Now the lines you’ve previously selected will be sorted by the option you chose. One thing to keep in mind is that if you have lines which have breaks in them, the second line will also be sorted into the mix. Which may mess up formatting for things like CSS Property values.
Sometimes you need your string to be a set length, like maybe you have numbers that all need to be 10 characters long regardless of the number value. Or maybe you have a credit card number and want to just show the last 4 digits while everything else is replaced with an asterisk (*). Regardless of the reason, JavaScript now has built in methods to add the padded characters to either the start or the end of your string. Let’s begin with the padding at the start to get the idea going.
Say you have an invoice system that needs it’s invoice numbers to be 10 characters, but you are only up to invoice number 4532. You’ll want to have six zeros prepended to the invoice number for display. To do this, we will use JavaScript’s padStart() method. This method takes two parameters: targetLength & padString. targetLength is how long the string will be once the desired number of characters have been added. padString is the character that will be used for padding; if none is supplied, JavaScript will use " " (U+0020 'SPACE').
Using the invoice example above, your code would look like this:
let invoiceNumber = "4532"
invoiceNumber.padStart(10, '0')
// Output: "0000004532"The padEnd() method works the same way but appends the padding character to the end of the string. So, our example would look like this instead:
let invoiceNumber = "4532"
invoiceNumber.padEnd(10, '0')
// Output: "4532000000"More Information:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padStart
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/padEnd
If you have a date in JavaScript and need to subtract (or add) a number of days to that date, you will want to use JavaScript’s built in setDate() method. This will set the day of the month for a given date.
NOTE: setDate() is based on local time. If you want to work with UTC time then use setUTCDate()
So, if you wanted to set the day of the month to be the 15th of the current month you would start with today’s date and change the date like so:
var d = new Date();
d.setDate(15);
// Sun Aug 15 2021 16:49:25 GMT-0500 (Central Daylight Time)Using this approach combined with the getDate() method (which returns the current month’s date for a given date), you can substract or add days. If you want to get the date which is Today – 5 days then you could use:
var d = new Date();
d.setDate(d.getDate()-5);
// Tue Aug 10 2021 16:56:31 GMT-0500 (Central Daylight Time)More Information:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/setDate
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getDate