List front-end code optimization points
- 1. Use `template string` instead of string concatenation
- 2. Use `destructuring assignment` to avoid reusing item.xx1, item.xx2
- 3. Determine whether an attribute in the array has a value `.some()`
- 4. Use `includes()` to determine whether an array contains an element - (can be used to avoid multiple repeated conditional statements)
- 5. Create a new array and use `array.form()` instead of `for loop + push()`
- 6. Use [`filter`] + [`includes`] to return the specified item instead of map+push
- 7. One of the differences between map and forEach is that `map can return a new array`, and you can use `return` or `()` to return
- 8. Determine and obtain duplicate items `new Set + filter + indexOf` - (can be used to prompt to mark duplicate item data)
1. Use 模板字符串 instead of string concatenation
2. Use 解构赋值to avoid repeated use of item.xx1, item.xx2
3. Determine whether an attribute in the array has a value.some()
4. includes()Used to determine whether an array contains an element - (can be used to avoid multiple repeated conditional statements)
5. Create a new array and array.form()replace it withfor循环 + push()
6. Use [ filter] + [ includes] to return the specified item instead of map+push
7. One of the differences between map and forEach is map可以返回新数组that you can use returnor ()to return
8. Determine and obtain duplicate items new Set + filter + indexOf- (can be used to prompt to mark duplicate item data)
