Tutoring web design, this fact is known. The tutor shares some documentation. I’ve known for some time that the self-closing script tag <script src=”the_script.js” /> seems not to work. Rather, I use <script src=”the_script.js”></script> I’ve wondered why the self-closing script …
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The tutor tests JavaScript code using the console. I’ve long known about the JavaScript console, and use it sometimes for debugging. However, I didn’t know to use if for testing – until now. In the past, I’d build a rudimentary …
The tutor continues from yesterday’s example of dynamic content. In yesterday’s post I discussed how to change an element’s appearance on a page with JavaScript. Today, I’ll discuss how to change it back and forth. This paragraph’s style can be …
The tutor returns to JavaScript to talk about changing element style. With JavaScript, the appearance of an element on the page can be changed by actions offered to the visitor. For example, the button below can be clicked to change …
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The tutor offers a little utility that connects the user with HTML color. In web coding, one way HTML colors are indicated is as follows: style=”color:#ff0000″ More specifically, the color string is of the form #rrggbb. After the hash tag, …
The tutor continues to explore the html <canvas> tag. The html <canvas> tag offers many possible displays with graphics. To my knowledge, it’s the only native way to produce web graphics with Javascript. Today, I’ll demonstrate a gradient effect: Click …
The tutor continues to explore random functions. In several of my earlier posts – this one, for example – I talk about random numbers simulated by computer functions. Today’s post shows another such application. When the button is clicked, a …
The tutor continues about regex in the context of Javascript. In yesterday’s post I brought up regular expressions with an interactive example. Today, some more depth: Let’s imagine an input string that means an amount of money. Likely, the amount …
The tutor introduces Javascript regex. Regex, aka regular expressions, is a programming concept. One regex function searches input for a given pattern, then reports presence or absence. Another, upon finding the pattern, might change it among the rest of the …
In this post, the tutor speaks from experience, rather than formal education. Event programming (aka, event-driven programming), as I understand, focuses on designing interfaces that react to user input. What happens when the user clicks a button? What happens when …