howsmydriving-nyc/dist/src/util/extend/string-ext.js

NYC region plug-in for @HowsMyDrivingWA.

/**
 * Add lpad(string, number) to String prototype
 *
 * Params:
 *   pad:    character to prepend to string to make it length.
 *   l: length of string returned
 * Returns:
 *   string of length >= l where pad character is prepended to string
 *   enough times to satisfy length requirement. If string.length >= l,
 *   then the string is returned.
 *
 * Exceptions:
 *   If pad is not a single character, an Error is thrown.
 *
 * See: string-ext.d.ts
 **/
String.prototype.title = function () {
    return this.replace(/\w\S*/g, function (txt) {
        return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();
    });
};
String.prototype.lpad = function (pad, l) {
    var str = this;
    if (!pad || pad.length != 1) {
        throw new Error("Argument pad must be a single character.");
    }
    while (str.length < l) {
        str = pad + str;
    }
    return str;
};
// not sure why I can't make this extended function work...
String.prototype.trunc = function (n) {
    if (this.length > n) {
        return this.slice(0, n - 3) + '...';
    }
    return this;
};