How to compare two dates in JavaScript: a complete guide

Hello, colleagues! I'm new to JavaScript and ran into a problem comparing dates. I have a form where the user selects a start date and an end date, and I need to check that the end date is later than the start date. Here's my code:\n\n```javascript\nconst startDate = new Date('2023-10-15');\nconst endDate = new Date('2023-10-20');\n\nif (startDate > endDate) {\n console.log('Error: start date is later than end date');\n} else {\n console.log('All good');\n}\n```\n\nBut I noticed that sometimes the comparison works incorrectly. For example, if I compare only dates without time, then `new Date('2023-10-15')` and `new Date('2023-10-15')` are considered different? Or if I add time, the comparison breaks. I googled it, but the answers are scattered. Some say to use `getTime()`, some say `valueOf()`, and a