A Select control built with and for React. Initially built for use in KeystoneJS.
Live demo: jedwatson.github.io/react-select
To build the examples locally, run:
npm install
npm startThen open localhost:8000 in a browser.
This project is quite stable and ready for production use, however there are plans to improve it including:
- CSS Styles and theme support (working, could be improved)
- Documentation website (currently just examples)
- Custom options rendering (in progress)
It's loosely based on Selectize (in terms of behaviour and user experience) and React-Autocomplete (as a native React Combobox implementation), as well as other select controls including Chosen and Select2.
The easiest way to use React-Select is to install it from NPM and include it in your own React build process (using Browserify, etc).
npm install react-select --saveYou can also use the standalone build by including dist/select.js and dist/default.css in your page. If you use this, make sure you have already included the following dependencies:
React-Select generates a hidden text field containing the selected value, so you can submit it as part of a standard form. You can also listen for changes with the onChange event property.
Options should be provided as an Array of Objects, each with a value and label property for rendering and searching. You can use a disabled property to indicate whether the option is disabled or not.
The value property of each option should be set to either a string or a number.
When the value is changed, onChange(newValue, [selectedOptions]) will fire.
var Select = require('react-select');
var options = [
{ value: 'one', label: 'One' },
{ value: 'two', label: 'Two' }
];
function logChange(val) {
console.log("Selected: " + val);
}
<Select
name="form-field-name"
value="one"
options={options}
onChange={logChange}
/>You can enable multi-value selection by setting multi={true}. In this mode:
- Selected options will be removed from the dropdown menu
- The values of the selected items are joined using the
delimiterproperty to create the input value - A simple value, if provided, will be split using the
delimiterproperty - The
onChangeevent provides an array of the selected options as the second argument - The first argument to
onChangeis always a string, regardless of whether the values of the selected options are numbers or strings - By default, only options in the
optionsarray can be selected. SettingallowCreateto true allows new options to be created if they do not already exist.
If you want to load options asynchronously, instead of providing an options Array, provide a asyncOptions Function.
The function takes two arguments String input, Function callbackand will be called when the input text is changed.
When your async process finishes getting the options, pass them to callback(err, data) in a Object { options: [] }.
The select control will intelligently cache options for input strings that have already been fetched. The cached result set will be filtered as more specific searches are input, so if your async process would only return a smaller set of results for a more specific query, also pass complete: true in the callback object. Caching can be disabled by setting cacheAsyncResults to false (Note that complete: true will then have no effect).
Unless you specify the property autoload={false} the control will automatically load the default set of options (i.e. for input: '') when it is mounted.
var Select = require('react-select');
var getOptions = function(input, callback) {
setTimeout(function() {
callback(null, {
options: [
{ value: 'one', label: 'One' },
{ value: 'two', label: 'Two' }
],
// CAREFUL! Only set this to true when there are no more options,
// or more specific queries will not be sent to the server.
complete: true
});
}, 500);
};
<Select
name="form-field-name"
value="one"
asyncOptions={getOptions}
/>asyncOptions now supports Promises, which can be used in very much the same way as callbacks.
Everything that applies to asyncOptions with callbacks still applies to the Promises approach (e.g. caching, autoload, ...)
An example using the fetch API and ES6 syntax, with an API that returns an object like:
import Select from 'react-select';
/*
* assuming the API returns something like this:
* const json = [
* { value: 'one', label: 'One' },
* { value: 'two', label: 'Two' }
* ]
*/
const getOptions = (input) => {
return fetch(`/users/${input}.json`)
.then((response) => {
return response.json();
}).then((json) => {
return { options: json };
});
}
<Select
name="form-field-name"
value="one"
asyncOptions={getOptions}
/>If you want to load options asynchronously externally from the Select component, you can have the Select component show a loading spinner by passing in the isLoading prop set to true.
var Select = require('react-select');
var isLoadingExternally = true;
<Select
name="form-field-name"
isLoading={isLoadingExternally}
...
/>You can control how options are filtered with the following properties:
matchPos:"start"or"any": whether to match the text entered at the start or any position in the option valuematchProp:"label","value"or"any": whether to match the value, label or both values of each option when filteringignoreCase:Boolean: whether to ignore case or match the text exactly when filtering
matchProp and matchPos both default to "any".
ignoreCase defaults to true.
You can also completely replace the method used to filter either a single option, or the entire options array (allowing custom sort mechanisms, etc.)
filterOption:function(Object option, String filter)returnsBoolean. Will overridematchPos,matchPropandignoreCaseoptions.filterOptions:function(Array options, String filter, Array currentValues)returnsArray filteredOptions. Will overridefilterOption,matchPos,matchPropandignoreCaseoptions.
For multi-select inputs, when providing a custom filterOptions method, remember to exclude current values from the returned array of options.
Property | Type | Description
:-----------------------|:--------------|:--------------------------------
addLabelText | string | text to display when allowCreate is true
allowCreate | bool | allow new options to be created in multi mode (displays an "Add <option> ?" item when a value not already in the options array is entered)
asyncOptions | func | function to call to get options
autoload | bool | whether to auto-load the default async options set
backspaceRemoves | bool | whether pressing backspace removes the last item when there is no input value
cacheAsyncResults | bool | enables the options cache for asyncOptions (default: true)
className | string | className for the outer element
clearable | bool | should it be possible to reset value
clearAllText | string | title for the "clear" control when multi is true
clearValueText | string | title for the "clear" control
delimiter | string | delimiter to use to join multiple values
disabled | bool | whether the Select is disabled or not
filterOption | func | method to filter a single option: function(option, filterString)
filterOptions | func | method to filter the options array: function([options], filterString, [values])
ignoreCase | bool | whether to perform case-insensitive filtering
inputProps | object | custom attributes for the Input (in the Select-control) e.g: {'data-foo': 'bar'}
isLoading | bool | whether the Select is loading externally or not (such as options being loaded)
labelKey | string | the option property to use for the label
matchPos | string | (any, start) match the start or entire string when filtering
matchProp | string | (any, label, value) which option property to filter on
multi | bool | multi-value input
name | string | field name, for hidden <input /> tag
newOptionCreator | func | factory to create new options when allowCreate is true
noResultsText | string | placeholder displayed when there are no matching search results
onBlur | func | onBlur handler: function(event) {}
onChange | func | onChange handler: function(newValue) {}
onFocus | func | onFocus handler: function(event) {}
onInputChange | func | onInputChange handler: function(inputValue) {}
onOptionLabelClick | func | onClick handler for value labels: function (value, event) {}
optionRenderer | func | function which returns a custom way to render the options in the menu
options | array | array of options
placeholder | string | field placeholder, displayed when there's no value
searchable | bool | whether to enable searching feature or not
searchingText | string | message to display whilst options are loading via asyncOptions, or when isLoading is true
searchPromptText | string | label to prompt for search input
value | any | initial field value
valueKey | string | the option property to use for the value
valueRenderer | func | function which returns a custom way to render the value selected
Right now there's simply a focus() method that gives the control focus. All other methods on <Select> elements should be considered private and prone to change.
// focuses the input element
<instance>.focus();See our CONTRIBUTING.md for information on how to contribute.
MIT Licensed. Copyright (c) Jed Watson 2015.