How could i sort e.g an array like this one:
[
'<@520968882077433856> is level **7,64** _(18115.5 total xp)_',
'<@289037609274048513> is level **7,07** _(14473 total xp)_',
'<@672835870080106509> is level **8,25** _(22473.5 total xp)_',
'<@536686935134175254> is level **6,22** _(10184.5 total xp)_',
]
I would like to sort it by the amount of total xp, so the number within the brackets.
You can use the sort callback. Extract the number with a regular expression:
const data = [
'<@520968882077433856> is level **7,64** _(18115.5 total xp)_',
'<@289037609274048513> is level **7,07** _(14473 total xp)_',
'<@672835870080106509> is level **8,25** _(22473.5 total xp)_',
'<@536686935134175254> is level **6,22** _(10184.5 total xp)_',
];
const regex = /(?<=_\()[\d.]+/;
data.sort((a, b) => +a.match(regex) - +b.match(regex));
console.log(data);The + is used to convert the returned array (with one match element) to a string and then that to a number. You could use ?.[0] to actually get that first array element.
_(. Seems quite a strong condition already. And in that case the first gets precedence.Here is another try, looking for a space after the number:
const arr=[
'<@520968882077433856> is level **7,64** _(18115.5 total xp)_',
'<@289037609274048513> is level **7,07** _(14473 total xp)_',
'<@672835870080106509> is level **8,25** _(22473.5 total xp)_',
'<@536686935134175254> is level **6,22** _(10184.5 total xp)_',
];
function getN(s){
return s.match(/_\((.+?) /)[1];
}
arr.sort((a,b)=>getN(a)-getN(b))
console.log(arr)We can try sorting using a custom lambda expression:
var input = [
'<@520968882077433856> is level **7,64** _(18115.5 total xp)_',
'<@289037609274048513> is level **7,07** _(14473 total xp)_',
'<@672835870080106509> is level **8,25** _(22473.5 total xp)_',
'<@536686935134175254> is level **6,22** _(10184.5 total xp)_',
];
var output = input.sort( (a, b) => parseFloat(a.match(/(\d+(?:\.\d+)?) total xp\b/)[1]) - parseFloat(b.match(/(\d+(?:\.\d+)?) total xp\b/)[1]));
console.log(output);In the above we are extracting the number which is followed by total xp, parsing it as a float, and then using that value in the sorting comparator. If you want descending order, then just reverse the inequality in the lambda function.
> here: Difference between "greater than" and "subtract" in JavaScripts sortPlease try this.
const array = [
"<@520968882077433856> is level **7,64** _(18115.5 total xp)_",
"<@289037609274048513> is level **7,07** _(14473 total xp)_",
"<@672835870080106509> is level **8,25** _(22473.5 total xp)_",
"<@536686935134175254> is level **6,22** _(10184.5 total xp)_",
];
const extractDigitNumber = (string) => {
return string.match(/(?<=\_\()(.*?)(?=\)\_)/)[0].replace(/[^\d\.]+/g, '')
}
array.sort((a, b) => {
return extractDigitNumber(a) - extractDigitNumber(b)
})
console.log(array)Details are commented in example
let data = [
'<@520968882077433856> is level **7,64** _(18115.5 total xp)_',
'<@289037609274048513> is level **7,07** _(14473 total xp)_',
'<@672835870080106509> is level **8,25** _(22473.5 total xp)_',
'<@536686935134175254> is level **6,22** _(10184.5 total xp)_',
]
/*
* - .map() through array
* - on every iteration run .match() using this regex:
* /(\d+\.?\d*)(?=\stotal)/ which means:
"match one or more numbers, then a possible dot,
and then possible numbers, but only if it's followed
by a space and literal 'total'"
* - return a match in an array and the current index
* - .sort() the sub-arrays by their first index (sub[0])
*/
let indices = data.map((str, idx) => [+str.match(/(\d+\.?\d*)(?=\stotal)/g), idx]).sort((a, b) => a[0] - b[0]);
console.log(JSON.stringify(indices));
//Define an empty array
let result = [];
/*
* - run new array of arrays with .forEach()
* - get the string within the original array (data) by
the current sub-array's second index (sub[1])
* - push the value into the empty array (result)
*/
indices.forEach((sub, idx) => result.push(data[sub[1]]));
console.log(result);