solefald solefald - 4 months ago 25
jQuery Question

Sort mixed alpha/numeric array

I have a mixed array that i need to sort by alphabet and then by digit

[A1, A10, A11, A12, A2, A3, A4, B10, B2, F1, F12, F3]


how do i sort it to be:

[A1, A2, A3, A4, A10, A11, A12, B2, B10, F1, F3, F12]


i have tried

arr.sort(function(a,b) {return a - b});


but that only sorts it alphabetically.
Can this be done with either straight JavaScript or jQuery?

Thank you!

Answer
var reA = /[^a-zA-Z]/g;
var reN = /[^0-9]/g;
function sortAlphaNum(a,b) {
    var aA = a.replace(reA, "");
    var bA = b.replace(reA, "");
    if(aA === bA) {
        var aN = parseInt(a.replace(reN, ""), 10);
        var bN = parseInt(b.replace(reN, ""), 10);
        return aN === bN ? 0 : aN > bN ? 1 : -1;
    } else {
        return aA > bA ? 1 : -1;
    }
}
["A1", "A10", "A11", "A12", "A2", "A3", "A4", "B10", "B2", "F1", "F12", "F3"].sort(sortAlphaNum);