Master each chapter with free interactive exercises online. Live simulation lets you see your practice code run in your browser. 2,000 lines of color-keyed sample code break it all down into easy-to-learn chunks. Extra help through the rough spots so you're less likely to get stuck. Tested on non-coders—including the author's technophobe wife. Become fluent in all the JavaScript fundamentals, in half the time. Display alert messages to the user Gather information through prompts Manipulate variables Build statements Do math Use operators Concatenate text Run routines based on conditions Compare values Work with arrays Run automated routines Display custom elements on the webpage Generate random numbers Manipulate decimals Round numbers Create loops Use functions Find the current date and time Measure time intervals Create a timer Respond to the user's actions Swap images Control colors on the webpage Change any element on the webpage Improvise new HTML markup on the fly Use the webpage DOM structure Insert comments Situate scripts effectively Create and change objects Automate object creation Control the browser's actions Fill the browser window with custom content Check forms for invalid entries Deal with errors Make a more compelling website Increase user-friendliness Keep your user engaged

    Ratey, MD.Did you know you can beat stress, lift your mood, fight memory loss, sharpen your intellect, and function better than ever simply by elevating your heart rate and breaking a sweat? The evidence is incontrovertible: Aerobic exercise physically remodels our brains for peak performance. In SPARK, John J. Ratey, M.D., embarks upon a fascinating and entertaining journey through the mind-body connection, presenting startling research to prove that exercise is truly our best defense against everything from depression to ADD to addiction to aggression to menopause to Alzheimer's. Filled with amazing case studies (such as the revolutionary fitness program in Naperville, Illinois, which has put this school district of 19,000 kids first in the world of science test scores), SPARK is the first book to explore comprehensively the connection between exercise and the brain. It will change forever the way you think about your morning run---or, for that matter, simply the way you think

    Born in the mid-1990s to the mid-2000s and later, iGen is the first generation to spend their entire adolescence in the age of the smartphone. With social media and texting replacing other activities, iGen spends less time with their friends in person—perhaps why they are experiencing unprecedented levels of anxiety, depression, and loneliness. But technology is not the only thing that makes iGen distinct from every generation before them; they are also different in how they spend their time, how they behave, and in their attitudes toward religion, sexuality, and politics. They socialize in completely new ways, reject once sacred social taboos, and want different things from their lives and careers. More than previous generations, they are obsessed with safety, focused on tolerance, and have no patience for inequality. iGen is also growing up more slowly than previous generations: eighteen-year-olds look and act like fifteen-year-olds used to. As this new group of young people grows into adulthood, we all need to understand them: Friends and family need to look out for them; businesses must figure out how to recruit them and sell to them; colleges and universities must know how to educate and guide them. And members of iGen also need to understand themselves as they communicate with their elders and explain their views to their older peers. Because where iGen goes, so goes our nation—and the world.

    Rethinking the usage guide for the twenty-first century, Pinker doesn’t carp about the decline of language or recycle pet peeves from the rulebooks of a century ago. Instead, he applies insights from the sciences of language and mind to the challenge of crafting clear, coherent, and stylish prose. In this short, cheerful, and eminently practical book, Pinker shows how writing depends on imagination, empathy, coherence, grammatical knowhow, and an ability to savor and reverse engineer the good prose of others. He replaces dogma about usage with reason and evidence, allowing writers and editors to apply the guidelines judiciously, rather than robotically, being mindful of what they are designed to accomplish. Filled with examples of great and gruesome prose, Pinker shows us how the art of writing can be a form of pleasurable mastery and a fascinating intellectual topic in its own right.

    Indeed, as Tom Standage reveals in his scintillating new book, social media is anything but a new phenomenon.From the papyrus letters that Roman statesmen used to exchange news across the Empire to the advent of hand-printed tracts of the Reformation to the pamphlets that spread propaganda during the American and French revolutions, Standage chronicles the increasingly sophisticated ways people shared information with each other, spontaneously and organically, down the centuries. With the rise of newspapers in the nineteenth century, then radio and television, “mass media” consolidated control of information in the hands of a few moguls. However, the Internet has brought information sharing full circle, and the spreading of news along social networks has reemerged in powerful new ways.A fresh, provocative exploration of social media over two millennia, Writing on the Wall reminds us how modern behavior echoes that of prior centuries-the Catholic Church, for example, faced similar dilemmas in deciding whether or how to respond to Martin Luther's attacks in the early sixteenth century to those that large institutions confront today in responding to public criticism on the Internet. Invoking the likes of Thomas Paine and Vinton Cerf, co-inventor of the Internet, Standage explores themes that have long been debated: the tension between freedom of expression and censorship; whether social media trivializes, coarsens or enhances public discourse; and its role in spurring innovation, enabling self-promotion, and fomenting revolution. As engaging as it is visionary, Writing on the Wall draws on history to cast new light on today's social media and encourages debate and discussion about how we'll communicate in the future.

    Perfect for parents who wish to teach their children and for those who would like to learn or relearn the facts themselves, A Classical Education is informative and educational, but in a completely accessible way, including:• Latin and Greek• Logic and philosophy• Natural sciences• Art and architecture• Poetry and drama• History and Classical literatureAlso including suggestions for further reading and entertaining tit-bits of information on the classics, A Classical Education is a must for anyone feeling let down by modern schooling.

    In Turing’s Cathedral, George Dyson focuses on a small group of men and women, led by John von Neumann at the Institute for Advanced Study in Princeton, New Jersey, who built one of the first computers to realize Alan Turing’s vision of a Universal Machine. Their work would break the distinction between numbers that mean things and numbers that do things—and our universe would never be the same. Using five kilobytes of memory (the amount allocated to displaying the cursor on a computer desktop of today), they achieved unprecedented success in both weather prediction and nuclear weapons design, while tackling, in their spare time, problems ranging from the evolution of viruses to the evolution of stars. Dyson’s account, both historic and prophetic, sheds important new light on how the digital universe exploded in the aftermath of World War II. The proliferation of both codes and machines was paralleled by two historic developments: the decoding of self-replicating sequences in biology and the invention of the hydrogen bomb. It’s no coincidence that the most destructive and the most constructive of human inventions appeared at exactly the same time.  How did code take over the world? In retracing how Alan Turing’s one-dimensional model became John von Neumann’s two-dimensional implementation, Turing’s Cathedral offers a series of provocative suggestions as to where the digital universe, now fully three-dimensional, may be heading next.

    This book is an easy-to-understand and fun reference to this challenging subject. It explains the principles of organic chemistry in simple terms and includes worked-out problems to help readers get up to speed on the basics.

    Always timely, topical, and distinctively “useful, with a pleasant degree of humor,” the Almanac is consulted daily by users from all walks of life, throughout the year.   The 2021 edition contains the fun facts, predictions, and feature items that have made it a cultural icon: traditionally 80 percent–accurate weather forecasts; notable astronomical events and time-honored astrological dates; horticultural, culinary, fashion, and other trends; historical hallmarks; best fishing days; time- and money-saving garden advice; recipes for refreshment; facts on folklore, farmers, home remedies, and husbandry; amusements and contests, plus too much more to mention—all in the inimitable way that the Almanac has done since 1792.   • Beloved by generations for being “useful, with a pleasant degree of humor,” The Old Farmer’s Almanac features everything under the Sun, including its much-in-demand long-range weather predictions, essential astronomical timetables, 2021 holidays, fascinating trends, best fishing days, valuable gardening information, tantalizing recipes, fun folklore, amusements, contests, and much more! • Exclusive: 32 reference pages, covering such popular topics as full Moon names, hurricane names, flowers that attract birds and butterflies, U.S./metric measurement conversions, and many more! • Easy-to-read edition, with crisp, white paper and larger type than the regular paperback version • Includes 112 full-color pages • Hard cover with dust jacket helps to protect the pages—a plus for those who collect the Almanac each year!

    What will she do? And what are the implications for her behavior later in life?The world's leading expert on self-control, Walter Mischel has proven that the ability to delay gratification is critical for a successful life, predicting higher SAT scores, better social and cognitive functioning, a healthier lifestyle and a greater sense of self-worth. But is willpower prewired, or can it be taught?In The Marshmallow Test, Mischel explains how self-control can be mastered and applied to challenges in everyday life—from weight control to quitting smoking, overcoming heartbreak, making major decisions, and planning for retirement. With profound implications for the choices we make in parenting, education, public policy and self-care, The Marshmallow Test will change the way you think about who we are and what we can be.

    This text concisely describes the Python language and its programming environment for those readers already familiar with languages such as C and C++.

    In this straightforward how-to, he offers down-to-earth guidance on crafting an effective and meaningful online platform.In Platform, you will learn how to:Extend your influence, monetize it, and build a sustainable career. Get noticed and start earning money in an increasingly noisy world.  Learn to amplify, update, polish, and organize your content for success.Platform goes behind the scenes into the world of social media success. You’ll discover what bestselling authors, public speakers, entrepreneurs, musicians, and other creatives are doing differently to gain contacts, connections, and followers and win customers in today’s crowded marketplace.With proven strategies, easy-to-replicate formulas, and practical tips, this book makes it easier, less expensive, and more possible than ever to stand out from the crowd and launch a business.

    Since the number one factor in employee success is the relationship between employees and their immediate managers, employees need to take greater responsibility for getting the most out of that relationship. Drawing on years of experience training managers and employees, Tulgan reveals the four essential things employees should get from their bosses to guarantee success at work.Shows employees how to ask for what they need to succeed in their high-pressure jobs Shatters previously held beliefs about how employees should manage up Outlines what employees must get from their managers: clear expectations; the skills needed to perform their jobs; honest feedback, recognition or rewards A novel approach to managing up, It's Okay to Manage Your Boss is an invaluable resource for employees who want to work more effectively with their managers.

    In "How to Start a Successful Blog in One Hour" you'll learn how to use WordPress to get a blog online in under an hour. Just follow this seven-step process and your brand new blog will contain: a theme, ten plugins and four tools for building an audience. The best part? The entire process will only take 60 minutes to complete.

    In order to counter these cyber bad guys, you must become a hacker yourself--an ethical hacker. Hacking for Dummies shows you just how vulnerable your systems are to attackers. It shows you how to find your weak spots and perform penetration and other security tests. With the information found in this handy, straightforward book, you will be able to develop a plan to keep your information safe and sound. You'll discover how to:Work ethically, respect privacy, and save your system from crashing Develop a hacking plan Treat social engineers and preserve their honesty Counter war dialing and scan infrastructures Understand the vulnerabilities of Windows, Linux, and Novell NetWare Prevent breaches in messaging systems, web applications, and databases Report your results and managing security changes Avoid deadly mistakes Get management involved with defending your systems As we enter into the digital era, protecting your systems and your company has never been more important. Don't let skepticism delay your decisions and put your security at risk. With Hacking For Dummies, you can strengthen your defenses and prevent attacks from every angle!