I have some tasks to handle in my daily jobs, so I need to do it in a automatic way. My task is:
For example, in the cleanResult example, I need it to be done like:
finalResult = ["https://www.example.com/firstlink|500",
"https://www.example.com/firstlink|150",
"https://www.example.com/firstlink|30",
"https://www.exmaple.com/secondlink|600",
"https://www.exmaple.com/secondlink|150",
"https://www.exmaple.com/secondlink|30",
"https://www.example.com/thirdlink|500",
"https://www.example.com/thirdlink|150",
"https://www.example.com/thirdlink|30",
"https://www.example.com/forthlink|600",
"https://www.example.com/forthlink|100",
"https://www.example.com/forthlink|20",
"https://www.example.com/fithlink|0",
"https://www.example.com/fithlink|200",
"https://www.example.com/fithlink|50"
]
Here's the codes I had done so far:
const urlRegex = /(https?\:\/\/)?([^\.\s]+)?[^\.\s]+\.[^\s]+/gi;
const digitRegex = /^(?=.*\d)[\d ]+$/;
cleanResult = ["https://www.example.com/firstlink",
"https://www.exmaple.com/secondlink",
"https://www.example.com/thirdlink",
"500 150 30",
"https://www.example.com/forthlink",
"600 100 20",
"https://www.example.com/fithlink",
"200 50"
]
cleanResult.forEach((item, index) => {
if (item.match(digitRegex)) {
//codes I don't know how to do...
}
})
Are elements in cleanResult always either a URL or a number? In that case, you could just check the first character of the string to see if it's a number (basically a non-url). If it's not a URL, then we know it's numbers, and we can do something with the URL, which should the the previous element:
// If it's a URL, we will store it here for future use
let currentURL = ''
cleanResult.forEach((item, index) => {
// Get the first character of this string
const first = item[0]
if (!Number.isInteger(first)) {
// This is NOT a number, so must be a URL,
// let's store it in our variable to use in the next loop
currentURL = item
} else {
// This IS a number, which means we need to do a few things:
// 1. Split into separate numbers
// 2. Create a new URL pattern from each number
// 3. Push to finalResult
// 1. Split by tab delimiter (?)
// splits by tab, and returns an array
const numbers = item.split('\t')
// 2. Create a new URL pattern from each number
numbers.forEach((n) {
// This should now give you the URL + | + the number:
// ex: https://example.com/firstlink|500
const newURL = currentURL + '|' + n
// 3. push to the finalResult array
finalResult.push(newURL)
})
}
})
I haven't tested it, but this is the process that I generally use: break it into smaller tasks and take it one step at a time. I also didn't use regex, just to make it easier. We're assuming that you will receive either a URL or a list of numbers separated by a tab. This means you can afford to keep it a bit simple.
I'm sure there are way more efficient ways to do it and in a lot fewer lines, but if you're just learning JS or programming, there is nothing wrong with being extra verbose so that you can understand early concepts.