Consider this simple example array: $letters = [ ['a', 'c', 'f'], ['c', 'f'], ['b', 'd', 'x', 'c', 'f'], ['f'] ]; I need to order the array in descending order by number of letters (or anyway, by the number of elements…
I create the regex /(10?|10{2,})/g to find 1,10 or 100,1000... but the code below doesn't return the expected result. I don't know where I went wrong, please help me! <!DOCTYPE html> <html> <body> <h2>JavaScript Regular Expressions</h2> <p>Do a global search…
Without using regex, is there a way to get number from a string in JavaScript? For example, if input is "id is 12345", then I want 12345 number in output. I know a lot of regex solutions, but I am…
I can't sort a list of key/value pairs in an object in natural order when a leading zero precedes a 4-digit key. This is the object with key/value pairs: plain_options = { "1001":"Freizeile", "1101":"Freizeile", "1201":"Zwischenmahlzeit", "1301":"Zwischenmahlzeit", "0101":"Frühstück", "0201":"Freizeile", "0301":"Freizeile", "0401":"Menü…
Hey I am trying to write some code to handle the unformatting of EU and US numbers but I can not get a perfect solution. For example I would like 1.222.222,89 to be 1222222.89 1,222,222.89 to be 1222222.89 I am…
How can I calculate the sum of all the values in the range between x and y that were output when the function executes so that after each complete loop it repeats decrementing y by one until y will not…
For my BMI calculator, I take user input from several input fields. I expect the value of imperialHeight to be 65 after the calculation, but it actually is 605. // user input through input field with id imperialHeightFt = 5…
I have a problem. I have an abject let aa = [ {"x":"1","y":"12"}, {"x":"2","y":"12"}, {"x":"3","y":"12"}, {"x":"4","y":"25"}, {"x":"5","y":"45"}, {"x":"6","y":"49"} ] but I need an object like this let aa = [ {"x": 1,"y": 12 }, {"x": 2,"y": 12}, {"x": 3,"y": 12},…
I am attempting to take a string of numbers and iterate through that number. When there are two odd numbers adjacent to one another, I want to separate them with '-'. For example, 999463 would become 9-9-9463. const str =…
function map(arr) { let m = new Map(); arr.forEach((num) => { m.set(`${num}`, m.get(`${num}`) == undefined ? 1 : m.get(`${num}`) + 1); }); let result = []; m.forEach((cnt, num) => (cnt > 1 ? result.push(+cnt) : "")); if (result == [])…