libj-globals

Part of libj tools

Usage (npm)

npm install libj-globals

and on top of your entry point:

import 'libj-globals'

Adds jQuery symbols (jQuery, $), underscorejs (_) and moment (moment) symbols to window global variable, in order to use them anywhere without importing them.

Also adds support for Jalaali calendar system to moment using moment-jalaali npm package.

For other type checkings See Underscorejs website

Adds these to underscore _ symbol

_.isVoid(value) -> boolean
Is a function that if value is either null or undefined returns true, otherwise returns false.

_.isJquery(value) -> boolean
Checks if the given value argument is a jquery object

_.isBuffer(value) -> boolean
Checks if the given value argument is a Buffer object

_.searchObjects(search, objects, properties = null) -> array of objects
Searches for given search parameter in the give objects parameter. properties is an array of string which you can pass to limit searching an object to only these properties, if you don't pass this parameter or pass null all properties of an object will be searched.

_.sortObjects(objects, columns) -> array of objects
Sorts given objects according to given columns. columns is an array of { column: String, ascending: Boolean } in which 'column' is name of the name of property to sort and 'ascending' is a boolean for sorting direction based on that property.

Adds the following ECMA polyfills:

• Object.assign method
• Object.entries method
• array.sort method

Adds the following for specific browser bugs:

• classList for IE10 & IE11 See this
• viewport fix for IE10 See this
• maxlength attribute bug in many browsers

Adds these to window global variable for logging:

• log function is a replacement for console.log and can be used globally. Usage:

log('test')   //prints test in console

• stackTrace function is added globally to show current stack trace. Usage:

stackTrace()  //returns a string containing current stack trace

• logStackTrace function is added globally to print stackTrace output to console. Usage:

logStackTrace() //prints current stack trace in console

Adds these to polyfill jquery in older browsers (Safari, IE):

• $.fn.classes
• $.fn.hasAttr checks if a jquery element contains an attribute. Calls $.fn.attr internally. Usage:

$('#someElementId').hasAttr('custom-attribute')

• $.fn.equals checks if a given element equals another element. Usage:

$('#el1').equals($('#el1))    //returns true

• $.fn.outerHTML returns outer html of the calling element. Usage:

<div id="el1">iii</div>
$('#el1').outerHTML()    //returns <div id="el1">iii</div>

Adds these to String prototype in borwsers:

• format: Usage:

String.format("Hello %0. Welcome to %1", "Saeid", "libj")  //returns "Hello Saeid. Welcome to libj"

• endsWith: See this startsWith`: See this

Adds these to Number prototype in browsers:

padZero`: Inserts specified number of zeros at the beginning of the calling number. Usage:

var x = 12;
x.padZero(4);    //returns "0012"