Fydler UtilityBelt - Cron Expression Explainer

Cron Expression Explainer

Time & Networking Tool

Cron Expression

Cron Syntax Guide

A standard cron expression has five fields:

minute hour day(month) month day(week)

* : Any value
, : Value list separator
- : Range of values
/ : Step values (increments)

lucide.createIcons(); const input = document.getElementById('cron-input'); const explanationBox = document.getElementById('explanation-box'); const explanationText = document.getElementById('cron-explanation'); const errorBox = document.getElementById('error-box'); const errorText = document.getElementById('cron-error'); function explainCron() { const val = input.value.trim(); if (!val) return; try { const desc = cronstrue.toString(val); explanationText.textContent = desc; explanationBox.classList.remove('hidden'); errorBox.classList.add('hidden'); } catch (e) { errorText.textContent = e; errorBox.classList.remove('hidden'); explanationBox.classList.add('hidden'); } } input.addEventListener('input', explainCron); document.querySelectorAll('.preset-btn').forEach(btn => { btn.addEventListener('click', () => { input.value = btn.dataset.cron; explainCron(); }); }); // Initial explanation explainCron();