Enhance the performance of your applications by using React and adding the Progressive web app capability to it About This Book ? Bring the best of mobile sites and native apps to your users with progressive web applications ? Create fast, reliable, and engaging PWAs with React and Firebase ? Create high-performance applications even with low connection speeds by leveraging modern web technologies Who This Book Is For This book is for Java* Developers who want to develop high performance Web User Interfaces. This book requires basic knowledge of HTML, CSS and JavaScript. What You Will Learn ? Set up Webpack configuration, as well as get the development server running ? Learn basic Firebase configuration and deployment ? Create routes, manage multiple components, and learn how to use React Router v4 to manage the flow of data ? Use React life cycle methods to load data ? Add a service worker to the app and learn how it works ? Use a service worker to send Push Notifications ? Configure Webpack to split up the JavaScript bundle and lazy load component files ? Learn how to use the web Cache API to use your app offline ? Audit PWAs with Google's Lighthouse tool In Detail For years, the speed and power of web apps has lagged behind native applications. Progressive Web Apps (PWAs) aim to solve this by bridging the gap between the web apps and native apps, delivering a host of exciting features. Simultaneously, React is fast becoming the go-to solution for building modern web UIs, combining ease of development with performance and capability. Using React alongside PWA technology will make it easy for you to build a fast, beautiful, and functional web app. After an introduction and brief overview of the goals of PWAs, the book moves on to setting up the application structure. From there, it covers the Webpack build process and the process of creating React components. You'll learn how to set up the backend database and authentication solution to communicate with Firebase and how to work with React Router. Next, you will create and configure your web app manifest, making your PWA installable on mobile devices. Then you'll get introduced to service workers and see how they work as we configure the app to send push notifications using Firebase Cloud Messaging. We'll also explore the App Shell pattern, a key concept in PWAs and look at its advantages regarding efficient performance. Finally, you'll learn how to add offline capabilities to the app with caching and confirm your progress by auditing your PWA with Lighthouse. Also, you'll discover helper libraries and shortcuts that will help you save time and understand the future of PWA development. Style and approach This is a step-by-step book, wherein, you will use the React framework to create a complete progressive web app.

Master the ArcGIS API for JavaScript to build web and mobile applications using this practical guide. About This Book ? Develop ArcGIS Server applications with JavaScript, both for traditional web browsers as well as the mobile platform ? Make your maps informative with intuitive geographic layers, user interface widgets, and more ? Integrate ArcGIS content into your custom applications and perform analytics with the ArcGIS Online Who This Book Is For If you are a web or mobile application developer, who wants to create GIS applications in your respective platform, this book is ideal for you. You will need Java Script programming experience to get the most out of this book. Although designed as an introductory to intermediate level book, it will also be useful for more advanced developers who are new to the topic of developing applications with ArcGIS Server. What You Will Learn ? To create an application with the ArcGIS API for JavaScript ? Build and display a broad range of different geometry types to represent features on the map ? The best way to leverage a feature layer and display related attribute data ? The functionality of the wide range of widgets and how to use them effectively ? Query data to gain new insights into the information it contains ? Work with tasks to discover and locate features on the map ? Using the geocoder and associated widgets ? The ability of the API to provide turn by turn directions and routing capabilities ? How to use the Geometry Engine and Geometry Service tasks for common geoprocessing operations ? Integrate content on ArcGIS online and add it to your custom web mapping application In Detail The ArcGIS API for JavaScript enables you to quickly build web and mobile mapping applications that include sophisticated GIS capabilities, yet are easy and intuitive for the user. Aimed at both new and experienced web developers, this practical guide gives you everything you need to get started with the API. After a brief introduction to HTML/CSS/JavaScript, you'll embed maps in a web page, add the tiled, dynamic, and streaming data layers that your users will interact with, and mark up the map with graphics. You will learn how to quickly incorporate a broad range of useful user interface elements and GIS functionality to your application with minimal effort using prebuilt widgets. As the book progresses, you will discover and use the task framework to query layers with spatial and attribute criteria, search for and identify features on the map, geocode addresses, perform network analysis and routing, and add custom geoprocessing operations. Along the way, we cover exciting new features such as the client-side geometry engine, learn how to integrate content from ArcGIS.com, and use your new skills to build mobile web mapping applications. We conclude with a look at version 4 of the ArcGIS API for JavaScript (which is being developed in parallel with version 3.x) and what it means for you as a developer. Style and approach Readers will be taken through a series of exercises that will demonstrate how to efficiently build ArcGIS Server applications for the mobile and web.

Caroline's EX-boyfriend: That slimeball attorney who was two-timing her with his own ex-wife. Caroline's OH-boy: This forty-three-year-old career woman is pregnant! Life certainly hasn't gone according to Caroline Moore's carefully constructed plan. As the craziness of her situation begins spiraling out of control, she decides on a change of scenery. So off to a small lakeside cottage she goes. Soon she's shedding her designer shoes for barefoot walks, uncovering old family secrets and becoming best friends with Tori–a woman who is her total opposite. And thanks to a handsome neighbor, she might just be ready for romance, as well. But wait…Caroline's new oh-what-a-great-guy also happens to be Tori's ex-husband. Get ready for the shoes to fly!

Mike Bishop's latest assignment should have been simple–rescue a woman and the young boy in her care. But there was nothing simple about beautiful Ann Hamilton. Suddenly, Mike was thinking more and more about ways to mix business with pleasure. Lots of pleasure… Mike was a hazel-eyed, walking hunk of testosterone–and the last thing Ann needed. She wanted only to start a peaceful new life with her adopted son, but Mike had a way of inflaming much more than just her temper. He would protect her life, but what about her heart?

IT WAS LOVE AT FIRST KITE… From the moment Angus Calder's kite disrupted her beachfront nap, Kenzie Daniels was a goner. And the energetic seven-year old seemed just as smitten…unlike his heart-stopping, coolly conservative dad. Ross Calder obviously didn't want his son growing attached to Kenzie, so why was she still drawn to the vulnerable single father struggling to form a bond with the son he'd never known? The beach vacation was supposed to bring Ross and his unresponsive son closer, yet the free-spirited beauty was the one they were both forming an attachment to. While the levelheaded attorney couldn't deny his attraction, he wouldn't risk his son's heart breaking when they returned home and bid Kenzie goodbye. And Angus's heart was the only one at risk…wasn't it?

He'd finally gotten his revenge. Tough loner Max Cooper had been given the perfect opportunity to put his high-and-mighty partner, Kristina Fortune, in her place. The pampered princess had lost her memory and was depending on Max to fill in the gaps. While Max's head told him to make Kristina his personal slave, his heart had him questioning his motives. Was the brooding bachelor punishing Kristina for his overwhelming attraction…or denying himself a honeymoon to remember?

THE OLDER WOMAN The first time fortune found Sierra Carlton, she'd become a millionaire. The second time, Sam Jayce stood before her, a long, lean, young farmer hungry to make her flower ranch a reality. Trouble was, Sam made her hunger for more than success. But Sierra had let desire dictate once…and found herself a single mom. Well, wild horses couldn't spook Sam from her side…especially once they became lovers. But when word spread of the Puma Springs heiress and her studly partner mixing business with pleasure, Sam refused to let the scandal that dogged him dishonor Sierra. Only, Sierra didn't need defending. She needed Sam as their baby's daddy–and she needed his love.

The Annunaki, a power-hungry and hate-driven alien race, have returned to take over Earth. This time, permanently. And the hard-core human rebels who fought to repel these self-proclaimed gods have paid a terrible price. Just when they are needed most–as the post apocalyptic threat surges to terrifying new levels–the Cerberus operation lies broken, its key members missing. Ullikummis has chosen Earth as ground zero for a terrifying family reunion. A son born of cruelty, genetic manipulation and infinite power, for 4,000 years the stone god has waited, plotting his revenge against his father, Enlil, the most sadistic of the Annunaki. As father and child unleash their armies in a clash of titanic proportions, the bravest of the rebels, Kane, is humanity's last hope to halt this deadly war of the gods. Endgame has finally arrived…but who will be the winner?

EVERYONE KNOWS SISTERS LIKE THE SAMS GIRLS–three women trying their best to be good daughters, mothers and wives. LYDIA, married to Wayne, worked a dead-end job to make sure her daughter, Anna Claire, had the best in life. MADALAINE, the mother of two, struggled to get on with life after her husband's desertion and ELLIE…well, Ellie shuffled along, taking care of her parents and brother, while dreaming of Graceland. Life rolled along, routine, expected. Until one cataclysmic moment when everything changed…and the sisters had to uncover every shrouded secret, risk lifetime bonds, to ensure the survival of all they loved.

Jake Maitland, FBI agent and black sheep of the Maitland clan, had finally come home. And he had a whole lot of trouble on his tail…. Camille Eckart was Jake's latest assignment. He'd been chosen as her protector, to keep her and her newborn son safe from her mobster ex-husband. Only, little did Jake guess that Camille's main objective was to make him see her not as a case, but as a woman…. Jake's reputation as a loner had taken on legendary proportions–until Camille and little Jamie stole their way into his heart. But with kingpin Vince Eckart on the loose, Jake couldn't afford to get emotionally involved. Their lives depended on him. But as he spent time holed up with mother and son, he quickly discovered his life depended even more on them….

Ellie Waters usually juggled career, family and church commitments with ease. But when her mother fell ill, coping suddenly seemed overwhelmingly difficult. For help she looked to the past–and within her deepest self. Charlene Butler, wife, grandmother and businesswoman, was enjoying a bright, new chapter of her life. But her aunt Dorothy's medical crisis suddenly made Charlene wonder how solid the foundation of her world really was. On their journeys of discovery, these two very different women met, shared the burden of being caretakers, and in doing so they became best friends. Together they laughed, prayed and found new strength and new depths to their faith.

Members of the wedding party are starting to die. No one could believe that Thomas Beckham was the kind of man to leave a woman at the altar, but he couldn't marry his bride-to-be. Not after what he'd seen her do. His only choice was to leave and never look back–and to keep to himself everything he'd witnessed. After the wedding-that-wasn't, everyone, including Kelly Ralston, went on to other things. Or so it had always seemed. But ten years later, Kelly finds herself attending the funeral of another one of the bridesmaids–the third member of the wedding party to meet a tragic death. Kelly can't help but wonder if the deaths are a coincidence. Or are they linked? If so, who will be targeted next? Thomas Beckham may be her only chance to find the killer. Before the killer finds her…

Nicole Logan's Resolution: To deliver the twins who had her feeling like the eighth wonder of the world. And January was the perfect due date, because her babies signaled a beginning. Nicole's life would once again be hers. Free from the shadow of a domineering father, a never-there mother–and a deceitful husband… Dennis Lincoln's Assignment: Investigate one very pregnant widow who was the key to exposing a powerful crime syndicate. To get the answers he wanted, he had to get close–very close. But soon, what he needed was Nicole…if she could ever forgive his lies.

HER BABY HAD BEEN KIDNAPPED Former Las Vegas showgirl Dakota Armstrong was desperate when her son was stolen from her. He'd been taken by one of the most dangerous men in Nevada, and she had little hope of recovering him by herself. When handsome and charming Russell Andreini of ChildFinders, Inc., promised to find the boy, Dakota insisted on helping him. But while they fought to save her son, she found herself fighting a different battle–against a powerful attraction she was not ready for. Russell was determined to show Dakota that he could protect her son–and her. And to convince her that she needn't fear the passion that sizzled between them. He would willingly risk his life; could she find the courage to risk her heart?

The human will to survive has sharpened to a knife edge after a century of postnuclear madness. In a lawless land where firepower and savagery rule, power lies with the barons and coldhearts who wield control through terror. Against all odds, a courageous few still fight for something better to live by–honor, decency and hope. Emerging relatively unscathed from the apocalyptic rebirth of North America, Canada hides a trove of Cold War-era secret government installations known as Diefenbunkers, filled with caches of weapons, wags and food. Ryan Cawdor and his companions agree to ride sec for a convoy headed west across the remnants of the old Trans-Canada Highway to retrieve the ultimate prize: four portable nuclear reactors. It's enough power to light up a ville for years, a bright beacon for a new tomorrow. But they have death on their tail, a baron and his sec men who will stop at nothing to claim the prize as their own.

BOTH SIDES NOW… LAUREN HOLLOWAY: The mother of twin daughters, this cashmere-and-pearls housewife has always been careful to do the "right" things in life. ERIN KARMELI: Clad in tight jeans and low-cut tops, she's a vodka-swilling, straight-shooting single mother who openly admits to making all the "wrong" choices. When her husband leaves her for his "hot" yoga instructor and her so-called perfect life does a 180, Lauren is fairly certain she's hit rock bottom. But then she develops an unlikely friendship with Erin (her new wise-talking neighbor) and Murphy Jones (whose neighborhood diner serves both friendship and fries). With their help, Lauren slowly realizes the only thing she's lost is the barrier to discovering her better half….

HIS ONLY FEAR Kidnapped as a boy, Chad Andreini had devoted his life to rescuing abducted children. But this anguished mother was different. Alluring Veronica Lancaster stirred within Chad a long-buried desire to belong somewhere-and made more painful the stark dread that he never would…. HER ONLY HOPE Trusting a total stranger with her precious child's life wasn't easy for Veronica, but walking away from Chad would have been even harder. her child's safe return was all she wanted from this comforting yet cryptic man, until the night they turned to each other in lonely desperation–and undeniable desire….

Mom Required Before Joey, his culinary repertoire was comprised of bad scrambled eggs, his spare bedrooms gathered dust and the master bedroom seemed destined to remain mistress-less. But when his nephew became his 24/7 responsibility literally overnight, Mark Chandler knew things had to change. And he needed help. Cedar Kennedy cured troubled kids, a reputation that prompted Mark to seek out the psychologist. Ordinarily their paths never would have crossed, she the silk-and-suits-wearing doctor, he the dusty-jeans-wearing construction-company owner. But Mark knew Cedar was the one. The one to help Joey face his fears. The one to make their house a home–if only he could get the good doctor to break her rules…and battle her own demons.

The cry for help came at night, during final roundup. But nothing could prevent Conner Calhoun from rescuing his brother' s widow and her two children. From the moment he' d laid eyes on Abigail, he' d wanted her, but she wasn' t his to have. And now he' d moved his forbidden love onto his ranch, where the secret between them had nowhere to hide… . Every time he tousled Cody' s hair, every time he cuddled little Miss Sarah, he was reminded of impossible wishes… and a gift given out of love. But honor demanded he not claim for his own what was never meant to be– unless, of course, Abby wanted the same thing… .

Now Playing: The story of the unsinkable Molly Preston Gone were the glasses, braces and baby fat. Molly Preston had changed heaps since the days they kept company in high school. Since Des O'Donnell had betrayed her. Now, of all the men on the charity auction block, she'd taken the upper hand and secretly bid on him. His Big Scene: Convincing her that with him she was in good company Seemed Molly had past wrongs she wanted to right. And she believed having big-man-on-campus Des O'Donnell as her reunion escort would send a statement. But Des owed her more. So he fibbed a little…and introduced her as his fiancée!

FBI Special Agent Lydia Wakefield had thought there was no room in her life for the opposite sex. Then she walked into Blair Memorial's emergency room with a bullet in her arm–and encountered the most compelling man she'd ever met. Lukas Graywolf was a brilliant surgeon who brought together the wonders of modern medicine and the wisdom of his Navaho heritage. And his strong, skilled healer's hands were awakening unsuspected desires within her. But it took a brutal hostage-taking–and the threat of losing Lukas forever–to make her see that she could never be complete without him.