Murach's JavaScript and jQuery (3rd Ed.) Chapter 4 © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

The Miles Per Gallon application in a browser © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

The HTML and JavaScript for the application © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

The HTML and JavaScript (continued) © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Another method of the window object that displays a dialog box © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Two methods of the window object for working with numbers © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Examples of window methods © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Three methods of the document object © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Examples of document methods © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Members of the Textbox object © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

HTML tags that define two text boxes © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

How to use the value property to get the value from a text box © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Murach's JavaScript and jQuery (3rd Ed.) How to use the parseFloat() method to get a number value from a text box © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Other examples of chaining © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

How to create a JavaScript object © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A few of the methods of a Date object © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Properties and methods of a String object © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

The syntax for a function expression © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A function expression with no parameters that doesn’t return a value © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A function expression with one parameter that returns a DOM element © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A function declaration with two parameters that returns a value © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A function that uses a local variable named tax © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A function that uses a global variable named tax © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

A function that inadvertently uses a global variable named tax © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

The strict mode directive © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

The same function in strict mode © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Best coding practices for variables © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)

Extra 4-2 Develop the Change Calculator © 2017, Mike Murach & Associates, Inc. Murach's JavaScript and jQuery (3rd Ed.)