I am struggling at the moment with making a new array of strings from another array that I have to filter for certain pattern.
Example:
let originalString = "4162416245/OG74656489/OG465477378/NW4124124124/NW41246654"
I guess this could be matched from this string as well. But my initial approach was to split this string at each / :
let splitArr = originalString.split('/');
// splitArr = ["4162416245", "OG74656489", "OG465477378", "NW4124124124", "NW41246654"]
Basically what I do have to achieve is to have 2 different array that is filtered down by pattern of the start of this strings. OG and NW is always fix won't change but numbers after I don't know.. Backend sends this data as OG(original ticket) NW(new ticket) so those prefixes are fix, I have to check for string starting with them and put them in they array:
ogArr = ["OG74656489", "OG465477378"]
nwArr = ["NW4124124124", "NW41246654"]
CodePudding user response:
If you want 2 separate arrays, you can use filter and startsWith
let originalString = "4162416245/OG74656489/OG465477378/NW4124124124/NW41246654";
let splitArr = originalString.split('/');
const ogArr = splitArr.filter(s => s.startsWith("OG"));
const nwArr = splitArr.filter(s => s.startsWith("NW"));
console.log(ogArr);
console.log(nwArr);
Another option could be using reduce to travel the collection once, and pass in an object with 2 properties where you can extract the data from.
let originalString = "4162416245/OG74656489/OG465477378/NW4124124124/NW41246654";
let splitArr = originalString.split('/');
const res = splitArr.reduce((acc, curr) => {
if (curr.startsWith("OG")) acc.og.push(curr)
if (curr.startsWith("NW")) acc.nw.push(curr)
return acc;
}, {
"nw": [],
"og": []
})
console.log(res);
CodePudding user response:
You can also use the Array.prototype.reduce() method to add the elements into an object containing all tickets.
This would lead to this results :
{
"OG": [
"OG74656489",
"OG465477378"
],
"NW": [
"NW4124124124",
"NW41246654"
]
}
let originalString = "4162416245/OG74656489/OG465477378/NW4124124124/NW41246654"
const tickets = originalString.split('/').reduce((acc, curr) => {
if(curr.startsWith('OG')) acc["OG"].push(curr)
else if(curr.startsWith('NW')) acc["NW"].push(curr)
return acc
}, {OG: [], NW: []})
console.log(tickets)