JSFiddle - React, Tailwind, and code Playground
by bladnman
JavaScript
function getNext15(current) {
}
function getDiffToNext15(current) {
}
function minsToNextXMark(xMarkMins) {
}
for (var i=0; i < 60; i++) {
var rem = i%15;
var dif = rem ? 15-rem : 0;
console.log( '['+ i + '] dif:' + dif);
}