A collection of standard and custom VueJs filters and directives.

It's MORPHLING time! *plays power ranger theme song. pun intented 😂






npm install vue-morphling --save


yarn add vue-morphling



import Vue from 'vue';
import { VueMorphling } from 'vue-morphling';

// Use all filters and directives.


import Vue from 'vue';
import { morphDate, vMorphHighlight, morphLowerCase } from 'vue-morphling';

// Import only what you need.


<script src=""></script>
<script src=""></script>

  Vue.use(VueMorphling.VueMorphling); // Use all
  // Or
  Vue.use(VueMorphling.morphDate); // Use morh-date filter only;
  Vue.use(VueMorphling.vMorphHighlight); // Use v-morh-highlight directive only;
  // Vue stuff here

All filters are available in the Vue instance as well, so they can be use as vm.$morphCapitalize or this.$morphCapitalize if you are using single file component.

All directive name should be prepended with v-, v-morph-url like so.

Morphling Filters


import { morphAge } from 'vue-morphling';

<p>{{ new Date(1976,2,20) | morph-age }}</p>
<!-- 42 -->
const birthday = new Date(1976,2,20);
const age = this.$morphAge(birthday);
console.log(age); // 42 (if is still 2018)

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import { morphCapitalize } from 'vue-morphling';

<p>{{ 'numb' | morph-capitalize }}</p>
<!-- Numb -->
const msg = this.$morphCapitalize('numb');
console.log(msg); // Numb

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import { morphChop } from 'vue-morphling';

This filter chops off a n length of character in a give string using the length option.


morph-chop(length, location)

<p>{{ 'Papercut' | morph-chop(2) }}</p>
<!-- Paperc -->

<p>{{ 'Papercut' | morph-chop(3, 'end') }}</p>
<!-- Paper -->

<p>{{ 'Papercut' | morph-chop(2, 'start') }}</p>
<!-- percut -->

<p>{{ 'Papercut' | morph-chop(3, 'start') }}</p>
<!-- ercut -->
const msg1 = this.$morphChop('Papercut', 2);
const msg2 = this.$morphChop('Papercut', 3, 'end');
const msg3 = this.$morphChop('Papercut', 2, 'start');
const msg4 = this.$morphChop('Papercut', 2, 'start');

console.log(msg1); // Paperc
console.log(msg2); // Paper
console.log(msg3); // percut
console.log(msg4); // ercut


option value default required description
length any number N/A YES Indicates the length of the string to be chopped off.
location 'start', 'end' 'end' NO If NOT specified, morph-chop will chop off the string from the end.

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import { morphCurrency } from 'vue-morphling';

Prepend a currency symbol to a value.



<p>{{ 100 | morph-currency('PHP')}}</p>
<!-- ₱100  -->
const msg = this.$morphCurrency(100, 'PHP');
console.log(msg); // ₱100


option description
code Currency code of a country e.g. 'PHP', 'USD', 'AUD', 'GBP'. Default is $ if not provided.

See currencies.js from lib folder.

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morph-date has been removed see morph-date-format for the updated date formatting method. I removed this to give way to future morph-date-[foo] methods such as e.g. morph-date-diff-minutes.


import { morphDateFormat } from 'vue-morphling';

Format any valid date using date-fns' format() function.



Note - morph-date-format is now using using date-fns@v1.30.1.

<p>{{ new Date() | morph-date-format('MMM DD, YYYY') }}</p>
<!-- Jul 26, 2017 -->

<p>{{ new Date() | morph-date-format('YYYY') }}</p>
<!-- 2017 -->

<p>{{ new Date() | morph-date-format('[Today is a] dddd') }}</p>
<!-- Today is Wednesday -->
const date = new Date('1976-03-20');

const formatted = this.$morphDateFormat(date, 'MMM DD, YYYY');
const year = this.$morphDateFormat(date, 'YYYY');
const time = this.$morphDateFormat(new Date(), 'hh:mm A');

console.log(formatted); // Mar 20, 1976
console.log(year); // 1976
console.log(time); // 11:00 PM


All formats are available of course in the date-fns format documentation, but here are some common examples.

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import { morphFileSize } from 'vue-morphling';

Converts any number (as bytes) to it's equivalent, Kb, Mb, Gb, Tb, Pb, Eb, Zb and Yb.

<code>{{ 1024 | morph-file-size }}</code>
<!-- 1.0 Kb -->

<p>{{ 10000000000 | morph-file-size }}</p>
<!-- 9.3 Gb -->
const date = new Date('1976-03-20');

const a = this.$morphFileSize(1024);
const b = this.$morphFileSize(10000000000);

console.log(a); // 1.0 Kb
console.log(b); // 9.3 Gb


import { morphJson } from 'vue-morphling';

Pretty print JSON objects inside the <pre> tag.



<!-- const obj = {"favoriteBand":"Linkin Park"} -->
<pre>{{ obj | morph-json(2) }}</pre>
  "favoriteBand": "Linkin Park"
<pre>{{ obj | morph-json('\t') }}</pre>
    "favoriteBand": "Linkin Park"
const msg = this.$morphJson({"favoriteBand":"Linkin Park", 4})
// {
//    "favoriteBand": "Linkin Park"
// }


option value default required description
indent any number or "\t" N/A Not really The value indicates the number of indent using spaces. If "\t" is used, the json will be indented using tab.

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import { morphLowerCase } from 'vue-morphling';

<p>{{ "LOST IN THE ECHO" | morph-lowercase}}</p>
<!-- lost in the echo  -->
const msg = this.$morphLowercase('LOST IN THE ECHO');
console.log(msg); // lost in the echo

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import { morphObjectSize } from 'vue-morphling';

Gets the bytes size (number) of any javascript object and converts it to it's equivalent Kb, Mb, Gb, Tb, Pb, Eb, Zb and Yb.

<code>{{ obj1 | morph-object-size }}</code>
<!-- 18.0 b -->

<p>{{ `Forget the wrong the i've done.` | morph-object-size }}</p>
<!-- 33.0 b -->
const obj1 = {name:'Chester'};
const obj2 = `Forget the wrong the i've done.`;

const a = this.$morphObjectSize(obj1);
const b = this.$morphObjectSize(obj2);

console.log(a); // 18.0 b
console.log(b); // 33.0 b


import { morphPlaceholder } from 'vue-morphling';

Replaces the value with a give placeholder.



this.$morphPlaceholder(value, placeholder)

<p>{{ "Battle Symphony" | morph-placeholder('New Divide') }}</p>
<!-- New Divide  -->
const msg = this.$morphPlaceholder('Battle Symphony', 'New Divide');
console.log(msg); // New Divide

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import { morphReplace } from 'vue-morphling';

Replaces character/s on a string with a given 'replacer' string. Accepts RegEx for better matching.


morph-replace(replacee|regex, replacer)

this.$morphReplace(value, replacee|regex, replacer)

<!-- Plain String -->
<p>{{ `I've given uuuuuup!!` | morph-replace('given', 'new word') }}</p>
<!-- I've new word uuuuuup!!  -->

<!-- With Regex -->
<p>{{ `I've given uuuuuup!!` | morph-replace(/i've/i, 'I have') | morph-replace(/uuuuuup!!/i, 'up.') }}</p>
<!-- I have given up.  -->
// replaced the word 'end' with 'start'.
const msg = this.$morphReplace('In the end', /end/i, 'start.');
console.log(msg); // In the start.

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import { morphReverse } from 'vue-morphling';

<p>{{ 'Shadow of the day' | morph-reverse}}</p>
<!-- yad eht fo wodahS  -->
const msg = this.$morphReverse('Shadow of the day');
console.log(msg); // yad eht fo wodahS

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import { morphSandwich } from 'vue-morphling';

Prepend and append data around a given value.

If only a single argument is given, it is used to surround the sandwiched
content by matching open brackets for closed brackets, and so on.


morph-sandwich(start, end)

<p>{{ 'the' | morph-sandwich('In ', ' end!') }}</p>
<!-- In the end!  -->

<p>{{{ 'Numb' | morph-sandwich('<<< ') }}}</p>
<!-- <<< Numb >>> -->
const msg1 = this.$morphSandwich('the', 'In ', ' end!');
console.log(msg1); // In the end!

const msg2 = this.$morphSandwich('Numb', '<<< ');
console.log(msg2); // <<< Numb >>>

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import { morphTruncate } from 'vue-morphling';

<p>{{ 'Leave out all the rest' | morph-truncate(11) }}</p>
<!-- Leave out a...  -->
const msg = this.$morphTruncate('Leave out all the rest', 11);
console.log(msg); // Leave out a...

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import { morphUpperCase } from 'vue-morphling';

<p>{{ "somewhere i belong" | morph-uppercase}}</p>
const msg = this.$morphUppercase('somewhere i belong');
console.log(msg); // SOMEWHERE I BELONG

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Morphling Directives


import { vMorphUrl } from 'vue-morphling';

morph-url is currently on experimental stage. The current version has some limitations:

  1. When a link/url appears twice in the string it will mess up the tags.

morph-url directive converts every link in a given element to an <a> tag.


v-morph-url, prepend v- to any directive name.

Before morphling

  My favorite websites are and

After morphling

<p v-morph-url>
  My favorite websites are <a href="" target="_blank"></a> and <a href="" target="_blank"></a>


import { vMorphHighlight } from 'vue-morphling';

This directive will highlight the any matching string with a color of your choice! Yep, just like a highlighter pen.


v-morph-highlight, prepend v- to any directive name.

Pass the params as string, like, 'cats::#7fad33' use :: as separator for the string to be highlighted and color. Syntax 'string::color' where string is any string and color is any color, hex color, rgb and rgba.

Before morphling

  Cats are the best dogs! I love cats!

After morphling

<p v-morph-highlight="'cats::#7fad33'">
  Cats are the best dogs! I love cats!

Screen Shot


1.0.0 and up - Dec. 20, 2019 PHT

  • morph-date replaced with morph-date-format.
  • Test scripts are now inside it's respective filter folder.
  • Update build strategy
    • From webpack to rollup
    • Update all babel related dependencies
    • Update date-fns to v1.30.1

0.8.0-alpha.1 - May 17, 2018 PHT

  • Updated the way filters are imported for tree shaking purposes. See usage.

0.7.4 - May 15, 2018 PHT

0.7.x - March 7, 2018 PHT

  • I'm sorry for the trouble. But I had to depricate morphling and rename it to vue-morphling because I am working on a different version of this library. The new mophling.js is pure javascript version of this plugin which you can use in both nodejs or vanilla. See updates here

0.6.0 - Feb 21, 2018 PHT

  • Replaced moment with date-fns. I replaced moment with date-fns because these reasons. There are no breaking changes in terms of using morph-date.

0.5.0 - Oct 26, 2017 PHT

Sept 26, 2017 PHT

  • Replaced webpack with plain babel
  • Changed indetion from 4 spaces to 2 spaces.
  • Fixed export error.
  • Fixed moment import bug.

July 29, 2017 PHT

  • Added v-morph-url directive.
  • morphs folder remaned to filters.

July 28, 2017 PHT


ERROR in build.js from UglifyJs

There is a known error when building a vue cli x webpack project that is using morphling.

ERROR in build.js from UglifyJs

Unexpected token: punc (() [../morphling/index.js:5,4][build.js:15630,10]


  1. Add es2015 and stage-2 presets to the .babelrc
  2. Include morphling to the babel-loader in build/webpack.base.conf.js


module: {
  rules: [
      test: /\.js$/,
      loader: 'babel-loader',
      include: [resolve('src'), resolve('test'), resolve('node_modules/morphling')]

Helpful links :

"When my time comes,
Forget the wrong that I've done,
Help me leave behind some,
Reasons to be missed,
Don't resent me,
And when you're feeling empty,
Keep me in your memory,
Leave out all the rest..."

In Memory of Chester Bennington (1976-2017)

I used Linkin Park songs as example strings to pay tribute to the death of Chester Bennington. One of my inspirations in music. Depression is very real, we may not fully understand it but it is very, very real. Talk to your love ones, and cherish every moment with them. Happy coding.

Made with ❤️ by Jofferson Ramirez Tiquez