txt

A lightweight javascript library with versatile functions for working with text.

1 KB (minified and gzipped) and dependency free, txt.js features advanced matching and delimiting, smart truncation, HTML and RegExp escaping, simple pluralization, and more.

It runs in both the browser and Node.js.

contents

• Start
• Documentation
• License

start

browser

Do one of the following to download txt:

• Use Bower: bower install txt --save
• Use npm: npm install txt --save
• Clone the repo: git clone https://github.com/wyvrw/txt.git
• Download the repo as a zip

Then in your HTML add:

<script src="txt.js"></script>

node.js

Use npm to download txt: npm install txt --save

Then in your javascript add:

var txt = require('txt');

documentation

eachMatch()

Calls a function for each match in the text, giving detailed information about it. If the function returns a string then that match is replaced. Returns the modified text.

txt.eachMatch('You can learn about #js or #html.', '#', function(match, details) {
    return '';
});
// 'You can learn about js or html.'

txt.eachMatch('You can learn about #js or #html.', /#\w+/g, function (match, details) {
    return '<a href="' + match + '" title="option ' + (details.arrayIndex + 1) + ' of ' + details.array.length + '">' + match + '</a>';
});
// 'You can learn about <a href="#js" title="option 1 of 2">#js</a> or <a href="#html" title="option 2 of 2">#html</a>.'

The callback function should have 2 parameters:

1. The match
2. An object containing:
   • The string of the text
   • The stringIndex of the current match
   • The array of all the matches
   • The arrayIndex of the current match
   • The pattern used for the matches

Performance tip: Use a RegExp with the global flag as the pattern - strings have to be escaped and then converted into RegExps and RegExps without the global flag have to be created again.

eachDelimiter()

Calls a function for each delimiter in the text, giving detailed information about it. If the function returns a string then that match is replaced. Returns the modified text.

txt.eachDelimiter('An example...\n...is an example.', '\n', function (match, details) {
    return 'Line ' + (details.arrayIndex + 1) + ': ' + match;
});
// 'Line 1: An example...Line 2: ...is an example.'

txt.eachDelimiter('An example...\n...is an example.', /\n/g, function (match, details) {
    return match + ' (' + (details.stringIndex + match.length) + ' characters so far)';
});
// 'An example... (13 characters so far)\n...is an example. (54 characters so far)'

The callback function should have 2 parameters:

1. The match
2. An object containing:
   • The string of the text
   • The stringIndex of the current match
   • The array of all the matches
   • The arrayIndex of the current match
   • The delimiter used for the matches

Performance tip: When using a RegExp as the delimiter, make sure to set the global flag - RegExps without the global flag have to be created again.

truncateChars()

Returns text truncated to the nearest delimiter within a specified number of characters.

txt.truncateChars('A bat, a cat, a dog, and a rat.', 25);
// 'A bat, a cat, a dog, and a ...'

txt.truncateChars('A bat, a cat, a dog, and a rat.', 25, {
    delimiter: ',', // default ' '
    append: ' and others.' // default '...'
});
// 'A bat, a cat, and others.'

truncateItems()

Returns the text truncated to the specified number of items according to a delimiter.

txt.truncateItems('A bat, a cat, a dog, and a rat.', 3);
// 'A bat, a ...'

txt.truncateItems('A bat, a cat, a dog, and a rat.', 3, {
    delimiter: ',', // default ' '
    append: ' and others.' // default '...'
});
// 'A bat, a cat, a dog, and others.'

escapeHTML() & unescapeHTML()

Returns escaped/unescaped HTML.

txt.escapeHTML('An example...<br>...is an example.');
// 'An example...&lt;br&gt;...is an example.

txt.unescapeHTML('An example...&lt;br&gt;...is an example.');
// 'An example...<br>...is an example.'

escapeRegExp() & unescapeRegExp()

Returns escaped/unescaped Regular Expression.

txt.escapeRegExp('[123]');
// '\[123\]'

txt.unescapeRegExp('\[123\]');
// '[123]'

pluralize()

Returns the singular or plural version of a word, depending on a number.

txt.pluralize(0, {
    singular: 'person',
    plural: 'people'
});
// 'people'

txt.pluralize(1, {
    singular: 'person',
    plural: 'people'
});
// 'person'

capitalize()

Returns text with the first character capitalized.

txt.capitalize('capital');
// 'Capital'

defaults()

Overides the defaults. Returns the new defaults.

txt.defaults({ ... });
// { ... }

The defaults are:

{
    truncateChars: { append: '...', delimiter: ' ' },
    truncateItems: { append: '...', delimiter: ' ' }
}

version

The version of txt.js.

txt.version;
// '1.0.0'

license

txt.js is released under the MIT license.