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Opening an answer automatically from a URL anchor link

From: Create an Expandable FAQ Listing with jQuery and Dreamweaver

Video: Opening an answer automatically from a URL anchor link

Now the last feature we're going to add is going to be the ability for you to send out a link to your Frequently Asked Questions and be able to automatically open one of the answers. So to do that, let's come over to the Code view inside of faq.html, and I want to look at an id I added into one of the questions. So on this question here that says, "Is there a lot of math involved in creating a bar chart," I have an id on the same item as the class faq called bar chart. So we'll remember this value. Let's switch back over to faq.js.

Opening an answer automatically from a URL anchor link

Now the last feature we're going to add is going to be the ability for you to send out a link to your Frequently Asked Questions and be able to automatically open one of the answers. So to do that, let's come over to the Code view inside of faq.html, and I want to look at an id I added into one of the questions. So on this question here that says, "Is there a lot of math involved in creating a bar chart," I have an id on the same item as the class faq called bar chart. So we'll remember this value. Let's switch back over to faq.js.

Inside of our JavaScript file, we need to add a custom function. We'll type function findAnchorLink, that's going to be the name of our function, beginning and ending parentheses, beginning and ending brackets. Let's split that open on the brackets. Inside of this function we're going to start by typing if, beginning and ending parentheses, beginning and ending parentheses brackets. Split the brackets open. Inside of the if condition, we're going to type location.href.indexOf, beginning and ending parentheses.

Inside of the parentheses here two tick marks for a string literal, pound sign. Outside of the parentheses for index but still inside of the parentheses for the if statement, space, exclamation point equals, which means not equal to, -1. Inside of the if statement we're going to type var namedAnchor. We're going to set that equal to window. location.hash, semicolon.

Next line, new variable, var space faqToFind. We're going to set this equal to the variable namedAnchor that we just created, plus two tick marks for a string literal, semicolon. Inside of the tick marks we're going to type space .faq_question, and then on the next line dollar sign, beginning and ending parentheses. We're going to come up here and find the faqToFind. Let's copy that to the clipboard, Let's paste them inside of the parentheses.

Outside of the parentheses .trigger, beginning and ending parentheses, semicolon. Inside of the parentheses for trigger, two tick marks for string literal, we're going to type Click. So basically what's happening here is we're looking at the href of the location. We're looking for a pound sign. If it does exist, which means the value is not -1, we're going to declare a variable of namedAnchor and find the hash tag. Then we're going to create another variable called faqToFind, and we're going to combine the namedAnchor, which in this case would be bar hart if that's what we put inside the URL for the anchor link.

We're going to add that to faq_ question div. Then we're going to find that object, and we're going to run a click event on it. Now in order to get this to run, let's come up here and select findAnchorLink function. Let's copy that to the clipboard, and inside of our document ready. Let's paste that in and put a semicolon. Now to test this, let's choose File > Save All. Let's go back out to faq.html, File > Preview in Browser.

Now to test this in our browser, let's come up to the URL field. Let's put a pound sign, barchart. Let's hit Return, and then let's hit Reload. Now we'll see that our script will actually pick up the fact that there's an anchor link on the URL field, and then automatically open the corresponding answer that relates to the question that has the same corresponding id value here. So that concludes creating your expendable FAQ listing. In the next movie we'll talk about where you might want to go from here using the techniques you've learned in this course.

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