ostrio:jsextensions

Useful Object Extensions for Meteor

Date:

• Date.now() - Fix for ES if Date object has not now() method

Math:

• Math.getRandom(min, max) - Get random number between max and min values, by default max is 1000 and min is 0

Object

• Object.defineReactiveProperty(target, prop, value, callback, getCallback, setCallback) - define Reactive property with callbacks:
  • set callback before Setter and Getter
  • set callback on Setter
  • set callback on Getter
• someArray.inArray(needle, searchInKey, searchByKey) - Extend Object prototype within inArray function
• someArray.diff(comparableArray) - Compare two array, if matches found - return array of matches. If second parameter is true returns true/false if matches found/doesn't found
• someObj.walk(callback) - Extend Object prototype within walk function callback, callback(object, value, key){}
• Object.Merge - Merge the enumerable attributes of two objects deeply
• someArray.random() - Extend Object prototype within random value pick up functionality for arrays

RegExp:

• RegExp.escape(string) - Function is used to escape all dangerous/reserved symbols in strings before creating RegExp with it

String:

• String.generate(length, symbols) - Generate random string from 1 to 10 symbols length, or with provided length, and made of provided symbols
• String.random(Boolean) - Generate random string from 2 to 111 symbols length, if the only parameter is true - generate string without unsafely chars. Additionally you can provide length, and symbols as first and second parameter, so this function will act as alias for String.generate(length, symbols)
• someString.clone() - Clone (a.k.a. create singleton) of String object. This method allows to resolve issue with variable's referencing. See performance here

clone() example:

1var str = 'abc';
2var str2 = str.clone();
3str = 'cde';
4console.log(str2); //-> 'abc'