JAVASCRIPT - HOW TO Trim Lines of Array & Add Padding - Javascript Source Code

JAVASCRIPT - HOW TO Trim Each Line of Array and Add Left and Right Space Padding to Each Line of Array

The function below takes a multiline string, splits the string line by line, and optionally adds your desired number of spaces before and after each line.

Most of the parameters of the Javascript function are optional with default values for the purpose of making this function as flexible as possible, such as the padding at the beginning and end of the string. For this reason, several examples of ways of using the function to split a string and add padding will be shown below.

function funcTrimLeftRight(str, leftTrim = true, rightTrim = true, leftPad = 0, rightPad = 0) { // IF THE STRING IS EMPTY EXIT if(str.trim().length == 0){alert('');return false;} // SPLIT THE STRING LINE BY LINE let arrLines = str.split(/\r?\n/); // CREATING THE PADDING let padL = ' '.repeat(leftPad); let padR = ' '.repeat(rightPad); // TRIM LEFT AND ANY PADDING LEFT AND RIGHT if ((leftTrim) && (rightTrim)){ arrLines = arrLines.map(element => { return padL + element.trimStart().trimRight() + padR; }); // TRIM LEFT AND ANY PADDING LEFT AND RIGHT }else if (leftTrim){ arrLines = arrLines.map(element => { return padL + element.trimStart() + padR; }); // TRIM RIGHT AND ANY PADDING LEFT AND RIGHT }else if (rightTrim){ arrLines = arrLines.map(element => { return padL + element.trimEnd() + padR; }); } return( arrLines.join('\n')); }

Example of Using the Function to Split String Line by Line, Trim Beginning of Each Line, with NO Padding Added to the Lines

let formnameids = [ ['signup-first_name', 'first_name', 'qeepr-firstname', 'txtafirst', authorFName], ['signup-last_name', 'last_name', 'txtalast', 'qeepr-lastname', authorLName], ['signup-email', 'txtaemail', 'email', 'email1', 'email2', authorEmail], ['password', 'passconf', 'txtapassword', 'password1', 'password2', authorPassword], ['yourrelationship', relationToDeceased], ['jform[firstname]', 'deceased-first_name', 'recipient_first_name', 'deceasedfirstname', 'deceased-firstname', 'txtfirst', deceasedFName], ['nameoffuneralhome', deceasedFuneralHome], ['memorialtext', deceasedObituaryText]

Split Above Text into Line by Line Array and Trim ...

START of Each Line, NO Padding END of Each Line, NO Padding START+END of Each Line NO Padding START+END w/5 Spaces Padding at Start START+END w/5 Spaces Padding at END START+END w/ 8 Spaces Padding START+END