JSFiddle - React, Tailwind, and code Playground

by f0t0n

JavaScript

(function() {
    var search = function(files, dateStr) {
        var re,
            i,
            len,
            result,
            fileName;
        re = new RegExp('^' + dateStr + '[^.]+\.csv$', 'i');
        len = files.length;
        result = [];
        for(i = 0; i < len; i++) {
            fileName = files[i];
            if(re.test(fileName)) {
                result.push(fileName);
            }
        }
        return result;
    };

    var files = [
        '123-x.csv',
        '123-y.csv',
        '456-z.csv'
    ];
    
    console.log(search(files, '123'));
})();