text-field-edit
Insert text in a <textarea>
and <input>
(supports Firefox and Undo, where possible)
You should use this instead of setting the field.value
directly because:
- it doesn't break the undo history (in supported browsers)
- it fires an
input
event (with event.inputType === 'insertText'
) - it's the most efficient way of adding/replacing selected text in a field
- it's cross-browser (modern browsers)
It uses document.execCommand('insertText')
in Chrome (which has Undo support) and it replicates its behavior in Firefox (without Undo support until this bug is solved).
If you need IE support, use insert-text-at-cursor.
Install
You can just download the standalone bundle
Or use npm
:
npm install text-field-edit
import * as textFieldEdit from 'text-field-edit';
Usage
Insert text at the cursor, replacing any possible selected text, acting like a paste
would:
const input = document.querySelector('input');
const button = document.querySelector('.js-add-signature');
button.addEventListener(event => {
textFieldEdit.insert(input, 'Made by 🐝 with pollen.');
});
This will act like field.value = 'New value'
but with undo support and by firing the input
event:
const textarea = document.querySelector('textarea');
const resetButton = document.querySelector('.js-markdown-reset-field');
resetButton.addEventListener(event => {
textFieldEdit.set(textarea, 'New value');
});
API
textFieldEdit.insert(field, text)
Inserts text
at the cursor’s position, replacing any selection.
const field = document.querySelector('input[type="text"]');
textFieldEdit.insert(field, '🥳');
field
Type: HTMLTextAreaElement | HTMLInputElement
text
Type: string
The text to insert at the cursor's position.
textFieldEdit.set(field, text)
Replaces the entire content, equivalent to field.value = 'New text!'
but with undo support and by firing the input
event:
const textarea = document.querySelector('textarea');
textFieldEdit.set(textarea, 'New text!');
field
Type: HTMLTextAreaElement | HTMLInputElement
text
Type: string
The new value that the field will have.
textFieldEdit.replace(field, searchValue, replacement)
Finds and replaces strings and regular expressions in the field’s value, like field.value = field.value.replace()
but leaves the last replacement selected like a text editor would.
Similar to String#replace
const textarea = document.querySelector('textarea');
textarea.value = 'Hello world';
textFieldEdit.replace(textarea, 'Hello', 'Ciao');
field
Type: HTMLTextAreaElement | HTMLInputElement
searchValue
Type: string | RegExp
The text to replace in the field’s value.
replacement
Type: string | function
The text that will replace searchValue
or a callback function that matches the signature in String#replace
.
Note: replacement patterns (replace(field, /hello (world)/, 'ciao $1')
) aren't supported.
textFieldEdit.wrapSelection(field, wrappingText, endWrappingText?)
Adds the wrappingText
before and after field’s selection (or cursor). If endWrappingText
is provided, it will be used instead of wrappingText
at on the right.
const field = document.querySelector('textarea');
textFieldEdit.wrapSelection(field, '**');
const field = document.querySelector('textarea');
textFieldEdit.wrapSelection(field, '(', ')');
textFieldEdit.getSelection(field)
Utility method to get the selected text in a field or an empty string if nothing is selected.
const field = document.querySelector('textarea');
textFieldEdit.getSelection(field);
field
Type: HTMLTextAreaElement | HTMLInputElement
Related
- indent-textarea - Add editor-like tab-to-indent functionality to
<textarea>
, in a few bytes. Uses this module. - fit-textarea - Automatically expand a
<textarea>
to fit its content, in a few bytes. - Refined GitHub - Uses this module.