pick-html-attribute-props

"Pickers" and other helper functions used to filter standard HTML attribute values from an object.

NOTE: This library was created with the intent to be used by React components, but React is not required to use this library.

Changelog

Install

$ npm i --save pick-html-attribute-props

Usage

import React from 'react';
import {
  pickGlobalHtmlAttrProps,
  pickInputHtmlAttrProps,
  pickTextAreaHtmlAttrProps
} from 'pick-html-attribute-props';

export function MyComponent(props) {
  return (
    <div {...pickGlobalHtmlAttrProps(props)}>
      {/* ... */}
    </div>
  );
}

export function MyInputComponent(props) {
  return (
    <input {...pickInputHtmlAttrProps(props)} {/* ... */} />
  );
}

export function MyTextAreaComponent(props) {
  return (
    <textarea {...pickTextAreaHtmlAttrProps(props)}>
      {/* ... */}
    </textarea>
  );
}

API

pickGlobalHtmlAttrProps(obj[, options])

Creates a new object composed of properties "picked" from obj that are valid HTML attributes that can be supplied to any HTML element or are event handlers (unless specified otherwise in options) found in the given obj. If obj is not defined, then an empty object is returned.

Parameters

• obj ?Object - object to be used when searching for HTML attribute values.
• [options.omitEventHandlers = false] ?Boolean - when true, event handlers will be omitted from the returned object.

Returns !Object

• A new object composed of only those properties that were determined to be valid, globally applicable HTML attributes or are event handlers (unless options.omitEventHandlers is true, then all event handlers will be omitted form the returned object). If none are found, then an empty object is returned.

Examples

import { pickGlobalHtmlAttrProps } from 'pick-html-attribute-props';

pickGlobalHtmlAttrProps(null); // returns `{}`
pickGlobalHtmlAttrProps({
  id: 42,
  className: 'my-class-name',
  onChange: handleChange,
  "data-id": "myDataId",
  "aria-blah": "myAriaProp"
}); // returns a new object that contains all of the properties in the original object

pickGlobalHtmlAttrProps({ onChange: handleChange }, { omitEventHandlers: true }); // returns `{}` (event handlers are being ommitted from result)
pickGlobalHtmlAttrProps({ id: 42, name: "Doctor Who", blah: 78 });                // returns `{ id: 42 }` ("name" & "blah" are not a valid HTML attribute for all HTML elements)

---

pickInputHtmlAttrProps(obj[, options])

Creates a new object composed of properties "picked" from obj that are valid HTML Input attributes or are event handlers (unless specified otherwise in options) found in the given obj. If obj is not defined, then an empty object is returned.

Parameters

• obj ?Object - object to be used when searching for HTML attribute values.
• [options.omitEventHandlers = false] ?Boolean - when true, event handlers will be omitted from the returned object.

Returns !Object

• A new object composed of only those properties that were determined to be valid HTML Input attributes or are event handlers (unless options.omitEventHandlers is true, then all event handlers will be omitted form the returned object). If none are found, then an empty object is returned.

Examples

import { pickInputHtmlAttrProps } from 'pick-html-attribute-props';

pickInputHtmlAttrProps(null); // returns `{}`
pickInputHtmlAttrProps({
  id: 42,
  type: 'text',
  defaultValue: 'Fish fingers and custard',
  className: 'my-class-name',
  onChange: handleChange,
  "data-id": "myDataId",
  "aria-blah": "myAriaProp"
}); // returns a new object that contains all of the properties in the original object

pickInputHtmlAttrProps({ onChange: handleChange }, { omitEventHandlers: true }); // returns `{}` (event handlers are being ommitted from result)
pickInputHtmlAttrProps({ id: 42, name: "Doctor Who", blah: 78 });                // returns `{ id: 42, name: "Doctor Who" }` ("blah" is not a valid HTML Input attribute)

---

pickTextAreaHtmlAttrProps(obj[, options])

Creates a new object composed of properties "picked" from obj that are valid HTML TextArea attributes and event handlers (unless specified otherwise in options) found in the given obj. If obj is not defined, then an empty object is returned.

Parameters

• obj ?Object - object to be used when searching for HTML attribute values.
• [options.omitEventHandlers = false] ?Boolean - when true, event handlers will be omitted from the returned object.

Returns !Object

• A new object composed of only those properties that were determined to be valid HTML TextArea attributes or are event handlers (unless options.omitEventHandlers is true, then all event handlers will be omitted form the returned object). If none are found, then an empty object is returned.

Examples

import { pickTextAreaHtmlAttrProps } from 'pick-html-attribute-props';

pickTextAreaHtmlAttrProps(null); // returns `{}`
pickTextAreaHtmlAttrProps({
  id: 42,
  defaultValue: 'Fish fingers and custard',
  className: 'my-class-name',
  onChange: handleChange,
  "data-id": "myDataId",
  "aria-blah": "myAriaProp"
}); // returns a new object that contains all of the properties in the original object

pickTextAreaHtmlAttrProps({ onChange: handleChange }, { omitEventHandlers: true }); // returns `{}` (event handlers are being ommitted from result)
pickTextAreaHtmlAttrProps({ id: 42, name: "Doctor Who", blah: 78 });                // returns `{ id: 42, name: "Doctor Who" }` ("blah" is not a valid HTML Input attribute)

Attribute Name Getters

getGlobalHtmlAttrNames()

Returns a list of attribute names that are valid for any HTML element.

NOTE: A list of attribute names returned can be found in attr-names.js.

Example

import { getGlobalHtmlAttrNames } from 'pick-html-attribute-props/attr-names';

console.log(getGlobalHtmlAttrNames()); // list of attribute names that are valid for any HTML element 

---

getInputHtmlAttrNames()

Returns a list of attribute names that are valid for an HTML Input element.

NOTE: A list of attribute names returned can be found in attr-names.js.

Example

import { getInputHtmlAttrNames } from 'pick-html-attribute-props/attr-names';

console.log(getInputHtmlAttrNames()); // list of attribute names that are valid for an HTML Input element

---

getTextAreaHtmlAttrNames()

Returns a list of attribute names that are valid for an HTML TextArea element.

NOTE: A list of attribute names returned can be found in attr-names.js.

Example

import { getTextAreaHtmlAttrNames } from 'pick-html-attribute-props/attr-names';

console.log(getTextAreaHtmlAttrNames()); // list of attribute names that are valid for an HTML TextArea element

Prop Name Predicates

propertyIsDataOrAriaAttr(propName)

Determines if the given propName represents a "data" or "aria" attribute.

Parameters

• propName ?String - the name of the property to check.

Returns !Boolean

• true if propName is a defined String and begins with begins with data- or aria-; otherwise, false.

Examples

import { propertyIsDataOrAriaAttr } from 'pick-html-attribute-props/prop-name-predicates';

console.log(propertyIsDataOrAriaAttr("data-blah")) // true
console.log(propertyIsDataOrAriaAttr("aria-blah")) // true

console.log(propertyIsDataOrAriaAttr(null))       // false (parameter isn't a String)
console.log(propertyIsDataOrAriaAttr("datablah")) // false (doesn't start with "data-")
console.log(propertyIsDataOrAriaAttr("ariablah")) // false (doesn't start with "aria-")

---

propertyIsDataOrAriaAttrOrEventHandler(propName)

Determines if the given propName represents an event handler, a "data" attribute, or an "aria" attribute.

Parameters

• propName ?String - the name of the property to check.

Returns !Boolean

• true if propName is a defined String and begins with on followed by a capitalized letter, begins with data-, or begins with aria-; otherwise, false.

Examples

import { propertyIsDataOrAriaAttrOrEventHandler } from 'pick-html-attribute-props/prop-name-predicates';

console.log(propertyIsDataOrAriaAttrOrEventHandler("onChange")); // true
console.log(propertyIsDataOrAriaAttrOrEventHandler("onBlah"));   // true

console.log(propertyIsDataOrAriaAttrOrEventHandler("data-blah")) // true
console.log(propertyIsDataOrAriaAttrOrEventHandler("aria-blah")) // true

console.log(propertyIsDataOrAriaAttrOrEventHandler(null))            // false (parameter isn't a String)
console.log(propertyIsDataOrAriaAttrOrEventHandler("onchange"));     // false ("on" is not followed by a capitalized letter)
console.log(propertyIsDataOrAriaAttrOrEventHandler("handleChange")); // false (doesn't start with "on")
console.log(propertyIsDataOrAriaAttrOrEventHandler("datablah"))      // false (doesn't start with "data-")
console.log(propertyIsDataOrAriaAttrOrEventHandler("ariablah"))      // false (doesn't start with "aria-")

---

propertyIsEventHandler(propName)

Determines if the given propName likely represents an event handler.

Parameters

• propName ?String - the name of the property to check.

Returns !Boolean

• true if propName is a defined String and begins with on followed by a capitalized letter; otherwise, false.

Examples

import { propertyIsEventHandler } from 'pick-html-attribute-props/prop-name-predicates';

console.log(propertyIsEventHandler("onChange")); // true
console.log(propertyIsEventHandler("onBlah"));   // true

console.log(propertyIsEventHandler(null))            // false (parameter isn't a String)
console.log(propertyIsEventHandler("onchange"));     // false ("on" is not followed by a capitalized letter)
console.log(propertyIsEventHandler("handleChange")); // false (doesn't start with "on")

License

ISC License (ISC)

Copyright (c) 2020, Brandon D. Sara (https://bsara.dev/)

Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.