Javascript字符串快速组装format

function format(template) {
    var args = Array.prototype.slice.call(arguments, 1);
    if (args.length <= 0) return template;
    return template.replace(/\{(\d+?)\}/g, function($0, $1) {
        var val = args[parseInt($1)];
        if (val === undefined) return "";
        return val;
    });
}

format('{0}-{1}', 'anlige', 23);