Ivia.js
A reactivity MVVM framework for jQuery with Vue-like interface.
Table of Contents
- Getting Started
- Binding Data (One-way-binding)
- DOM Events
- Two-Way Binding
- Show/Hide
- Find Element
- Wrap
- Methods / Watchers and Computed
- Events
- Setters
- Async/Sync
- Element Creation
Getting Started
Installation
Install by npm or yarn.
npm install ivia --save
yarn add iviaInstall by bower
bower install ivia --saveDownload single file for browser.
<script src="js/jquery.min.js"></script>
<script src="js/ivia.min.js"></script>CDN
<script src="//unpkg.com/ivia/dist/ivia.min.js"></script>If you are using ES6 syntax to import module, you must inject jQuery or Zepto first.
import jQuery from 'jquery';
import Ivia from 'ivia';
Ivia.$ = jQuery;
// Or Zepto
Ivia.$ = Zepto;
// Use _name to know which is in Ivia later
Ivia.$._name; // `jquery` or `zepto`Make sure your environment has window and document object, Ivia does not support server environment now.
Create Ivia Instance
Ivia's interface is very similar to Vue, we can create an instance and add elin option to select element.
<div id="app"></div>
<script>
var sp = new Ivia({
el: '#app', // You can also use $('#app')
data: { ... },
methods: {
...
}
});
</script>Sometimes you may need to put your code before HTML <body>, you can add domready option.
<head>
<script>
var sp = new Ivia({
el: '#app',
domready: true
});
</script>
</head>
<body>
<div id="app"></div>
</body>Or use jQuery plugin pattern.
$(document).ready(function () {
var sp = $('#app').ivia({ ... });
});Create Custom Plugin
Sometimes you may need to handle a big project with many re-usable widgets, you can use Ivia to help you create jQuery plugins.
// Do not pass `el` option
// This options will be default options.
Ivia.plugin('flower', {
data: { ... },
methods: { ... }
});Now, use this plugin everywhere:
$('.flower-widget').flower();
// Or add custom options
$('.flower-widget').flower({
data: {
foo: 'bar'
},
method: {
extraMethod: function () {}
},
extraOptions: {
foo: 'bar',
ajaxUrl: '/post'
}
});The new options will recursively merge with original one, so you can override any data. Use $options later in Ivia instance to get your extra options.
this.$options.extraOptions.ajaxUrl; // /postBinding Data (One-way-binding)
Simple Binding
- API:
this.$bind(selector: string, dataPath: string, handler: string|Function) - Handler:
function ($element: jQuery, value: mixed, oldValue: mixed, arrayControl: Object = null)
Ivia has a reactive data structure, you can bind an HTML element to a data value then if this data changed, Ivia will notice your handler to change DOM.
<div id="app">
<p id="flower"></p>
</div>
<script>
var sp = new Ivia({
el: '#app',
data: {
flower: {
name: 'sakura',
nmuber: 25
}
},
configure: function () {
this.$bind('#flower', 'flower.name', ':text');
this.$bind('#flower', 'flower.number', 'data-number');
}
});
</script>$bind() method help us bin a value to element we selected, don't worry to double selected, Ivia will cache it.
the third argument tells Ivia to bind the attribute to this data. This is similar to Vue v-bind:data-number directive.
An attribute name start with : is a special control, currently we supports :text, :html and :value, which will
auto use jquery .text(), html() or val() to bind data, otherwise will use attr().
The rendered result will be:
<p id="flower" data-number="25">sakura</p>Now you can change data:
sp.flower.name = 'rose';the text in <p> will change to rose, try this in playground
NOTE: All selector must under the root element which you set in
el:option, Ivia will usethis.$find()to find elements only contains in root element, if you have to control outside element, inject a custom element object.this.$bind(this.$('.my-outside-item'), 'flower')
Custom Handler
You will hope to do some extra action when data changed, just bind a callback.
this.$bind('#flower', 'flower.name', function ($ele, value, oldValue) {
$ele.text(name);
// Push new data to remote
this.$.ajax(...); // this.$ is a jQuery obj reference
// Add new child to other element
this.$find('.logs').append(
// Ivia provides createElement() method
// You can still use $(`<li>...</li>`) to create element.
Ivia.createElement('li', {'data-number': this.flower.number}, value)
);
// Show/hide
if (value) {
$ele.slideDown();
} else {
$ele.slideUp();
}
});Array Operation
If data is an array and changed by push, unshift and splice, there will be forth argument with control info,
it includes method and args to help you know what has been inserted.
var sp = new Ivia({
el: '#app',
data: {
items: ['a', 'b', 'c']
},
configure: function () {
this.$bind('#flower', 'items', function ($ele, value, oldValue, ctrl) {
if (ctrl) {
switch (ctrl.method) {
case 'push':
ctrl.args.forEach(e => $ele.append(this.$(`<li>${e}</li>`)));
break;
case 'splice':
...
break;
case 'unshift':
...
break;
}
return;
}
// Not array inserted, just refresh all
$ele.empty();
value.forEach(e => $ele.append(this.$(`<li>${e}</li>`)));
});
}
});
// Let's push a new item
sp.items.push('d');DOM Events
- API:
this.$on(selector: string, eventName: string, handler: Function, delegate: boolean = false) - Handler:
function ($ele, event)
Use $on() to bind DOM events to your data.
<div id="app">
<input id="flower-input" type="text" />
<p id="flower-output"></p>
</div>
<script>
var sp = new Ivia({
el: '#app',
data: {
flower: ''
},
configure: function () {
this.$on('#flower-input', 'input', function ($ele, event) {
this.flower = $ele.val();
});
this.$bind('#flower-output', 'flower', ':text');
}
});
</script>See example
If your elements are not always on page, your JS will add or remove them, you can add true to forth argument to use
jQuery delegate event binding, then jQuery will help you watch your element.
this.$on('#flower-input', 'input', $ele => this.flower = $ele.val(), true);Two-Way Binding
- API:
this.$model(selector: string|Element, dataPath: string, delegate: boolean = false)
Two-way binding can only works for input, textarea and select now.
<div id="app">
<input id="flower-input" type="text" />
<p id="flower-output"></p>
</div>
<script>
var sp = new Ivia({
el: '#app',
data: {
flower: 'initial data'
},
configure: function () {
this.$model('#flower-input', 'flower')
.$bind('#flower-output', 'flower', ':text');
}
});
</script>See Example
Show/Hide
- API:
this.$show(selector: string|Element, dataPath: string, onShow: string|Function, onHide: string|Function)
Use $show() to control an element show/hide depend on data, if value is true, not empty string or bigger then 0,
this element will be visible on page.
<div id="app">
<select name="" id="list">
<option value="0">Zero</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="-1">Negative One</option>
</select>
<div id="list-show">
<ul>
<li>A</li>
<li>B</li>
<li>C</li>
</ul>
</div>
</div>
<script>
var sp = new Ivia({
el: '#app',
data: {
list: '1'
},
configure: function () {
this.$show('#list-show li', 'list');
this.$model('#list', 'list');
}
});
</script>See Example
Hide element
Use $hide(), the show/hide value will be reversed from $show().
Custom Show/Hide Handler
Use string as jQuery method.
// Same as $ele.show()
this.$show('#list-show li', 'list', 'show', 'hide');
// Same as $ele.fadeIn()
this.$show('#list-show li', 'list', 'fadeIn', 'fadeOut');
// Samse as $ele.slideDown()
this.$show('#list-show li', 'list', 'slideDown', 'slideUp');If you only provide first handler, is will use as toggle handler.
this.$show('#list-show li', 'list', 'toggle'); // toggle show/hide
this.$show('#list-show li', 'list', 'fadeToggle'); // toggle fadeIn/fadeOutUse callback:
this.$show('#list-show li', 'list', function ($ele, v, old, ctrl) {
$ele.slideDown();
}, function ($ele, v, old, ctrl){
$ele.slideUp();
});
// Use ES6 arrow function
this.$show('#list-show li', 'list', $ele => $ele.slideDown(), $ele => $ele.slideUp());See Example
Find Element
Use $find(selector) to find all children element in the root element. Ivia will cache selector so you won't have multiple
select, if you want to refresh this select, add true at second argument.
The $bind(), $model and $show() method will cache target elements too, if you add some elements matches their selector,
you must call $find(selector, true) to refresh cache. $on() method can simply add true at last argument to enable delegation.
Wrap
Simply use $wrap so you don't need always type same selector:
this.$wrap('#flower-selector', function ($ele, wrapper) {
this.$bind('flower.name', ':text');
this.$model('flower.name');
// wrapper is same as this, useful for arrow function
wrapper.$show('flower.show', 'fadeToggle');
});Only supports $bind, $show, $model, $on methods.
Methods / Watchers and Computed
methods, watches and computed is same as Vue.
var sp = new Ivia({
el: '#app',
data: {
firstName: 'john',
lastName: 'williams'
},
configure: function () {
this.$model('#first', 'firstName');
this.$model('#last', 'lastName');
this.$bind('#full-name', 'fullName', ':text');
},
methods: {
capitalize: function (text) {
return text.charAt(0).toUpperCase() + text.slice(1);
}
},
computed: {
fullName: function () {
return this.capitalize(this.firstName) + ' ' + this.capitalize(this.lastName);
}
},
watch: {
foo: function (value, oldValue, ctrl) {
// Do some manually update
}
}
});Also support $watch() method:
this.$watch('foo.bar', function (value, oldValue, ctrl) {
// Do some manually update
});See Example and Vue: Computed amd Watchers
Events
Ivia events is also similar to Vue, the only different is that we change $on() method to $listen:
this.$listen('event-name', (arg) => {
console.log(arg); // Hello
});
this.$emit('event-name', 'Hello');
this.$off('event-name');Supported methods: $listen(), $emit(), $off(), $once().
Setters
You must also use $set() and $delete() to operate some object in data that Ivia can add reactive observer.
this.$set(this.$data.foo, 'bar', 'value');
this.$delete(this.$data.foo, 'bar', 'value');Async/Sync
nextTick
Ivia also supports $nextTick() after all watchers updated the DOM:
this.foo = 'new data';
this.$nextTick(function () {
// Do something after DOM updated.
});See Vue nextTick
Async DOM Operation
DOM operation is synchronous, Ivia provides an $async() method to help us do something asynchronous and return Promise/A+ object.
this.$async(function () {
for (...) {
$element.append(...); // Run 1000 times, here will not block your process
}
}).then(function () {
// Do something after DOM appended
});
// The below code will continue execute
this.$async(function () {
for (...) {
$element.append(...); // Run 1000 times, here will not block your process
}
}).then(function () {
// Do something after DOM appended
});
// These 2 tasks will not block each other.Also you can use Promise.all() or Promise.race(), this example we convert jQuery ajax deferred object to Promise:
Ivia.Promise.all([
this.$async(() => this.$.get(url1)),
this.$async(() => this.$.post(url2, data)),
this.$async(() => this.$.get(url3)),
]).then(() => {
// will wait 3 ajax completed
});Promise A/+
Ivia provides a Promise object in Ivia.Promise, if browser supports native Promise, this object will be reference of native Promise.
If browser not support, Ivia will wrap jQuery.Deferred and adapt it to fit Promise A/+ interface.
new Ivia.Promise(resolce => {
// Do something
resolve(...);
});Element Creation
In the original way, we use $ to create element:
Ivia.$('<div class="foo">Text</div>');Ivia has a createElement() method to help you generate DOM element:
Ivia.createElement('div', {class: 'foo'}, 'Text');We can add more children in the third argument.
Ivia.createElement('ul', {class: 'nav'}, [
{nodeName: 'li', attributes: {class: 'nav-item active'}, children: 'Text'},
{nodeName: 'li', attributes: {class: 'nav-item'}, children: 'Text'},
{nodeName: 'li', attributes: {class: 'nav-item'}, children: 'Text'},
]);Result:
<ul class="nav">
<li class="nav-item active">Text</li>
<li class="nav-item">Text</li>
<li class="nav-item">Text</li>
</ul>This is useful if we return Ajax JSON data to generate HTML.
TODO
- Component system
- Props
- State control
Credit
This project is inspired by Evan You's Vue.js and the reactive structure is heavily referenced of Vue.
License
Copyright (c) 2017, Simon Asika