Alex Gamblt

kaaboeld / seo.service.ts

Created June 24, 2016 09:21

Example working service for adding meta tags to <head/> for angular2-universal. Based on http://blog.devcross.net/2016/04/17/angular-2-universal-seo-friendly-website/

	import {Injectable,Inject,ElementRef, Renderer} from '@angular/core';
	//import { DOCUMENT } from '@angular/platform/common_dom';
	import {DOCUMENT} from '@angular/platform-browser';

	@Injectable()
	export class SeoService {
	private _r: Renderer;
	private _el: ElementRef;
	private _document: any;
	/**

davidtheclark / isElementInViewport.js

Created May 4, 2013 02:00

JavaScript: Is element in viewport?

	/*
	No jQuery necessary.
	Thanks to Dan's StackOverflow answer for this:
	http://stackoverflow.com/questions/123999/how-to-tell-if-a-dom-element-is-visible-in-the-current-viewport
	*/

	function isElementInViewport(el) {
	var rect = el.getBoundingClientRect();
	return (
	rect.top >= 0 &&