Book Image

OpenLayers 3: Beginner's Guide

By : Thomas Gratier, Paul Spencer, Erik Hazzard
Book Image

OpenLayers 3: Beginner's Guide

By: Thomas Gratier, Paul Spencer, Erik Hazzard

Overview of this book

<p>This book is a practical, hands-on guide that provides you with all the information you need to get started with mapping using the OpenLayers 3 library.</p> <p>The book starts off by showing you how to create a simple map. Through the course of the book, we will review each component needed to make a map in OpenLayers 3, and you will end up with a full-fledged web map application. You will learn the key role of each OpenLayers 3 component in making a map, and important mapping principles such as projections and layers. You will create your own data files and connect to backend servers for mapping. A key part of this book will also be dedicated to building a mapping application for mobile devices and its specific components.</p>
Table of Contents (22 chapters)
OpenLayers 3 Beginner's Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – target practice


In this example, we'll use the target property to move the map around in our web page:

  1. Working from the previous example, add a second <div> tag for the map and a <button> tag after the <input> element we added for the bindTo() example. Change the class of both <div> tags to half-map—this class tells the <div> tag to only take up to 50 percent of the width of the page. When the user clicks the button, we'll move the map between the two <div> tags:

    <div id="map" class="half-map"></div>
    <div id="map2" class="half-map"></div>
    <input type="checkbox" id="visible" checked> Toggle Layer Visibility
    <button onclick="changeTarget();">Change Target</button>
  2. Now, we can add a function to the end of the <script> element that contains our new code, right after the code we added in the bindTo() example. The function will first call map.getTarget() to get the ID of the element that the map...