worth

Hello, I'm a Front-engineer, I like build anything with javascript, This is my first public project, I hope you like it Thanks. Worth can get recommend index for you from your enter item, It will analyze you from the following aspects: 1. Whether the price is less than the average price of the monthly expenditure of the same item, importance: 35%. 2. Is the price less than all the monthly expenses of the same project, importance: 20%. 3. Whether the price is less than the monthly disposable amount, importance: 35%. 4. Frequency of use, importance: 35%. 5. Commodity life, importance: 5%. I know everyone has their own opinion on this, but I'm going to try to be as objective as possible. If you have scientific data for me, welcome PR, Thanks.