Class: Helper

Constructor

new Helper()

Source: util/Helper.js, line 6

Methods

(static) createObservable(onChangeopt, objReferenceopt, batchUpDelayopt) → {ProxyConstructor}

Create an observable object

Parameters:

Name	Type	Attributes	Default	Description
`onChange`	function	<optional>		Callback triggered on change. Default is undefined.
`objReference`	object	<optional>		Referenced object which will be transformed to an observable. Default is an empty new object.
`batchUpDelay`	boolean	<optional>	true	Flag defining if change events are batched up for 10ms before being triggered. Default is true.

Source: util/Helper.js, line 250

Returns:

Type:: ProxyConstructor

(static) createUid() → {string}

Creates an unique ID

Source: util/Helper.js, line 133

Throws:

If crypto module is not available
Type Error

Returns:

Type:: string

(static) deepMerge(target, …sources) → {Object}

Deep merges two objects into target

Parameters:

Name	Type	Attributes	Description
`target`	Object
`sources`	Object	<repeatable>

Source: util/Helper.js, line 218

Returns:

Type:: Object

Example

const merged = mergeDeep({a: 1}, { b : { c: { d: { e: 12345}}}});
// => { a: 1, b: { c: { d: [Object] } } }

(static) isArray(v) → {boolean}

Checks if given value is an array or not

Parameters:

Name	Type	Description
`v`	*	Value to check

Source: util/Helper.js, line 162

Returns:

Type:: boolean

(static) isClass(v) → {boolean}

Checks if given value is a class constructor

Parameters:

Name	Type	Description
`v`

Source: util/Helper.js, line 202
See: https://stackoverflow.com/questions/30758961/how-to-check-if-a-variable-is-an-es6-class-declaration

Returns:

Type:: boolean

(static) isPlainObject(value) → {boolean}

Checks if given value is a plain object

Parameters:

Name	Type	Description
`value`

Source: util/Helper.js, line 174
See: https://github.com/lodash/lodash/blob/master/isPlainObject.js

Returns:

Type:: boolean

(static) isString(v) → {boolean}

Checks if given value is string

Parameters:

Name	Type	Description
`v`	*	Value to check

Source: util/Helper.js, line 151

Returns:

Type:: boolean

(static) serializeForm(form, includeDisabledopt) → {Object}

Collects form data as a plain object.

Text-ish inputs -> string
checkbox:
- single checkbox name -> boolean
- multiple checkboxes with same name -> array of checked values
radio:
- selected value or null if none selected
select[multiple] -> array of values
file inputs -> FileList (or array of FileList if multiple inputs share the same name)

Parameters:

Name	Type	Attributes	Default	Description
`form`	HTMLFormElement			The form element
`includeDisabled`	boolean	<optional>	false	Include disabled form controls

Source: util/Helper.js, line 48

Returns:

Plain object of form data

Type:: Object

(static) trim(str, characters, flags) → {string}

Parameters:

Name	Type	Default	Description
`str`	string		String to trim
`characters`	string \| undefined		Characters to trim. Default is empty space.
`flags`	string \| undefined	g	RegExp flag. Default is "g"

Source: util/Helper.js, line 15

Returns:

Type:: string