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<h1 class="a-title"><strong>Reactive ÐApp Development</strong></h1>
<p class="u-text-color-quiet u-text-l">A powerful tool for building dApps in your favorite framework</p>
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<h3 class="h5">Reactive</h3>
<p class="u-text-color-quiet">Methods are provided to track and subscribe to events, contract & state balances, and react to changes via observables</p>
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<h3 class="h5">Framework Agnostic</h3>
<p class="u-text-color-quiet">No matter your favorite JS framework, you can use Subspace to simplify your development process. It works with React or Angular in the browser, and of course plays well with nodejs</p>
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<h3 class="h5">Automatic Syncing</h3>
<p class="u-text-color-quiet">Subspace saves state to a local database ensuring your dApp always syncs from the last known point, even after reload.</p>
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<p class="a-subtitle u-text-color-focus">Features</p>
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Youll love the thoughtful architecture of Subspace
</h2>
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<article class="o-distance">
<h3 class="h3">Event Tracking & Event Sourcing</h3>
<p class="u-text-color-quiet o-distance-xs">You can track events and react to their values. With Subspace observables doing event sourcing is easy.</p>
<a href="/getting-started.html#Tracking-events" title="" class="o-media-short o-distance-s">
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<pre><code class="language-js">import { $average, $latest } from "@embarklabs/subspace";
const rating$ = Product.events.Rating.track().map("rating"));
rating$.pipe($latest(5), $average()).subscribe((rating) => {
console.log("average rating of the last 5 events is " + rating)
});</code></pre>
</article>
<article class="o-distance">
<h3 class="h3">Tracking State</h3>
<p class="u-text-color-quiet o-distance-xs">You can track changes to a contract state variable, by specifying the view function and arguments to call and query the contract.</p>
<a href="/getting-started.html#Tracking-state" title="" class="o-media-short o-distance-s">
<svg class="icon icon--smaller o-media-short__icon" width="17" height="16" viewBox="0 0 17 16" fill="none" xmlns="http://www.w3.org/2000/svg">
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<pre><code class="language-js">const productTitle$ = ProductList.methods.products(0).track().map("title");
productTitle$.subscribe((title) => console.log("product title is " + title));
});</code></pre>
</article>
<article class="o-distance">
<h3 class="h3">Tracking balances</h3>
<p class="u-text-color-quiet o-distance-xs">You can also track changes in both ETH and ERC20 token balances</p>
<a href="/getting-started.html#Tracking-balances" title="" class="o-media-short o-distance-s">
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<pre><code class="language-js">const address = "0x0001020304050607080900010203040506070809";
subspace.trackBalance(address).subscribe((balance) => {
console.log("ETH balance is ", balance)
});
subspace.trackBalance(address, "0x744d70fdbe2ba4cf95131626614a1763df805b9e").subscribe((balance) => {
console.log("SNT balance is ", balance)
});</code></pre>
</article>
<article class="o-distance">
<h3 class="h3">React integration</h3>
<p class="u-text-color-quiet o-distance-xs">Subspace can make any React component compatible with observables</p>
<a href="/react.html" title="" class="o-media-short o-distance-s">
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<pre><code class="language-javascript"><script type="text/plain" class="">import { observe } from "@embarklabs/subspace/react";
const ProductComponent = ({ maxRating, minRating, averageRating }) => {
return <ul>
<li><b>minimum rating: </b> {minRating}</li>
<li><b>maximum rating: </b> {maxRating}</li>
<li><b>average rating: </b> {averageRating}</li>
</ul>;
};
const ReactiveProductComponent = observe(ProductComponent);
const Product = subspace.contract({abi, address});
const rating$ = Product.events.Rating.track().map("rating").pipe(map(x => parseInt(x)));
ReactDOM.render(
<ReactiveProductComponent
maxRating={rating$.pipe($max())}
minRating={rating$.pipe($min())}
averageRating={rating$.pipe($average())}
/>,
document.getElementById('hello-example')
);</script></code></pre>
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<script>
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(require('jquery')) :
typeof define === 'function' && define.amd ? define(['jquery'], factory) :
(factory(global.jQuery));
}(this, (function ($) { 'use strict';
$ = $ && $.hasOwnProperty('default') ? $['default'] : $;
/**
* @author Mudit Ameta
* @license https://github.com/zeusdeux/isInViewport/blob/master/license.md MIT
*/
// expose isInViewport as a custom pseudo-selector
$.extend($.expr.pseudos || $.expr[':'], {
// if $.expr.createPseudo is available, use it
'in-viewport': $.expr.createPseudo
? $.expr.createPseudo(function (argsString) { return function (currElement) { return isInViewport(currElement, getSelectorArgs(argsString)); }; })
: function (currObj, index, meta) { return isInViewport(currObj, getSelectorArgs(meta[3])); }
});
// expose isInViewport as a function too
// this lets folks pass around actual objects as options (like custom viewport)
// and doesn't tie 'em down to strings. It also prevents isInViewport from
// having to look up and wrap the dom element corresponding to the viewport selector
$.fn.isInViewport = function(options) {
return this.filter(function (i, el) { return isInViewport(el, options); })
};
$.fn.run = run;
// lets you chain any arbitrary function or an array of functions and returns a jquery object
function run(args) {
var this$1 = this;
if (arguments.length === 1 && typeof args === 'function') {
args = [args];
}
if (!(args instanceof Array)) {
throw new SyntaxError('isInViewport: Argument(s) passed to .do/.run should be a function or an array of functions')
}
args.forEach(function (arg) {
if (typeof arg !== 'function') {
console.warn('isInViewport: Argument(s) passed to .do/.run should be a function or an array of functions');
console.warn('isInViewport: Ignoring non-function values in array and moving on');
} else {
[].slice.call(this$1).forEach(function (t) { return arg.call($(t)); });
}
});
return this
}
// gets the width of the scrollbar
function getScrollbarWidth(viewport) {
// append a div that has 100% width to get true width of viewport
var el = $('<div></div>').css({
width: '100%'
});
viewport.append(el);
// subtract true width from the viewport width which is inclusive
// of scrollbar by default
var scrollBarWidth = viewport.width() - el.width();
// remove our element from DOM
el.remove();
return scrollBarWidth
}
// Returns true if DOM element `element` is in viewport
function isInViewport(element, options) {
var ref = element.getBoundingClientRect();
var top = ref.top;
var bottom = ref.bottom;
var left = ref.left;
var right = ref.right;
var settings = $.extend({
tolerance: 0,
viewport: window
}, options);
var isVisibleFlag = false;
var $viewport = settings.viewport.jquery ? settings.viewport : $(settings.viewport);
if (!$viewport.length) {
console.warn('isInViewport: The viewport selector you have provided matches no element on page.');
console.warn('isInViewport: Defaulting to viewport as window');
$viewport = $(window);
}
var $viewportHeight = $viewport.height();
var $viewportWidth = $viewport.width();
var typeofViewport = $viewport[0].toString();
// if the viewport is other than window recalculate the top,
// bottom,left and right wrt the new viewport
// the [object DOMWindow] check is for window object type in PhantomJS
if ($viewport[0] !== window && typeofViewport !== '[object Window]' && typeofViewport !== '[object DOMWindow]') {
// use getBoundingClientRect() instead of $.Offset()
// since the original top/bottom positions are calculated relative to browser viewport and not document
var viewportRect = $viewport[0].getBoundingClientRect();
// recalculate these relative to viewport
top = top - viewportRect.top;
bottom = bottom - viewportRect.top;
left = left - viewportRect.left;
right = right - viewportRect.left;
// get the scrollbar width from cache or calculate it
isInViewport.scrollBarWidth = isInViewport.scrollBarWidth || getScrollbarWidth($viewport);
// remove the width of the scrollbar from the viewport width
$viewportWidth -= isInViewport.scrollBarWidth;
}
// handle falsy, non-number and non-integer tolerance value
// same as checking using isNaN and then setting to 0
// bitwise operators deserve some love too you know
settings.tolerance = ~~Math.round(parseFloat(settings.tolerance));
if (settings.tolerance < 0) {
settings.tolerance = $viewportHeight + settings.tolerance; // viewport height - tol
}
// the element is NOT in viewport iff it is completely out of
// viewport laterally or if it is completely out of the tolerance
// region. Therefore, if it is partially in view then it is considered
// to be in the viewport and hence true is returned. Because we have adjusted
// the left/right positions relative to the viewport, we should check the
// element's right against the viewport's 0 (left side), and the element's
// left against the viewport's width to see if it is outside of the viewport.
if (right <= 0 || left >= $viewportWidth) {
return isVisibleFlag
}
// if the element is bound to some tolerance
isVisibleFlag = settings.tolerance ? top <= settings.tolerance && bottom >= settings.tolerance : bottom > 0 && top <= $viewportHeight;
return isVisibleFlag
}
// get the selector args from the args string proved by Sizzle
function getSelectorArgs(argsString) {
if (argsString) {
var args = argsString.split(',');
// when user only gives viewport and no tolerance
if (args.length === 1 && isNaN(args[0])) {
args[1] = args[0];
args[0] = void 0;
}
return {
tolerance: args[0] ? args[0].trim() : void 0,
viewport: args[1] ? $(args[1].trim()) : void 0
}
}
return {}
}
})));
//# sourceMappingURL=isInViewport.js.map
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<script>
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$(document).on('scroll',function(e)
{
$('h2[id]').each(function()
{
if ( $(this).offset().top < window.pageYOffset + 100
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}
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});
$(window).scroll(function() {
$('.js-inviewport-item').isInViewport({
tolerance: 0
})
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var options = {
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$('.js-navigation-list').removeClass('is-active');
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$('.js-header-keyvisual').addClass('is-active');
// Popup
$('.js-popup').magnificPopup({
type: 'inline',
preloader: false,
focus: '#name',
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});
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offsetTop: 100, // offset for fixed top bars (defaults to 0)
onScroll: function () {
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scrollEnd: function () {
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}
});
});
$('.js-docs-trigger').on('click', function(event) {
event.preventDefault();
$('.js-docs-sidebar').addClass('is-active');
});
$('.js-docs-trigger-close').on('click', function(event) {
event.preventDefault();
$('.js-docs-sidebar').removeClass('is-active');
});
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