String format JavaScript #javascript #sprintf

sprintf.js

// Usage: sprintf('https://sitename.com/{0}/{1}',['param0','param1'])

function sprintf(str, params) {
    var out;
    for (var i = 0, l = params.length; i < l; i++) {
        out = str.replace(/{(\d+)}/g, function(match, i) {
            return typeof params[i] != 'undefined' ? params[i] : match;
        });
    }
    return out;
}