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Using JavaScript to open the answer container

From: Create an Expandable FAQ Listing with jQuery and Dreamweaver

Video: Using JavaScript to open the answer container

Now we are going to complete that click event for the faq_question. So after the if statement, let's come down here, and let's type else, beginning and ending brackets. Let's split that open. So if the parent of the item that we clicked on does not have the open class, we know that the answer is closed, and we need to open it up. So the first thing we need to do is calculate how high we need to open that answer div. So let's start by creating a variable, var space newheight; that's the name of our variable.

Using JavaScript to open the answer container

Now we are going to complete that click event for the faq_question. So after the if statement, let's come down here, and let's type else, beginning and ending brackets. Let's split that open. So if the parent of the item that we clicked on does not have the open class, we know that the answer is closed, and we need to open it up. So the first thing we need to do is calculate how high we need to open that answer div. So let's start by creating a variable, var space newheight; that's the name of our variable.

We are going to set that equal to, dollar sign, parentheses, this inside of the parentheses, .closest, beginning and ending parentheses. Inside the parentheses two tick marks for string literal, .faq, outside of the parentheses, .find, beginning and ending parentheses, inside of the parentheses for find, tick marks for a string literal .faq_answer.

Outside of the parentheses .height, beginning and ending parentheses, space, plus, two tick marks for a string literal, semicolon, inside of the string literal put px for pixels. [var newHeight = $(this).closest ('.faq' ).find('.faq_answer').height() + 'px';]. Next line, dollar sign, beginning and ending parentheses, this, .closest, beginning and ending parentheses.

Inside of the parentheses two tick marks for a string literal .FAQ, outside of the parentheses .find, beginning and ending parentheses, inside of the parentheses two tick marks for a string literal .faq_answer_container, outside of the parentheses .animate, beginning and ending parentheses, semicolon, inside of the parentheses beginning and ending brackets, inside of the brackets two tick marks for a string literal, type height, outside of the parentheses colon. Let's come up here and copy the newHeight variable name.

Command+C or Ctrl+C to copy that to the clipboard. Let's paste that inside of the brackets after the colon. Outside of the brackets, but still inside of the parentheses, 500 milliseconds for half a second. Then on the next line [$(this).closest('.faq').find('.faq_answer_ container').animate ({'height': newHeight}. 500);] .closest beginning and ending parentheses, inside of the parentheses tick marks for a string literal .faq, outside of the parentheses .addClass beginning and ending parentheses, semicolon, inside tick marks for a string literal, type open.

[$(this).closest('.faq').addClass('open');] that we click on does not have the open class, we are going to calculate the height of the nearest faq_ answer inside of the object that was clicked. Now we are going to animate the height of that to that new height that we just declared in the variable, and then we are going to add the open class onto that element. Now in order to test this, let's choose File. Let's choose Save All. Let's go back to faq.html. Let's click over to Design view, and let's chose File > Preview in Browser.

Once in the browser, we can roll our cursor over the This is the question text. Notice I get the little Help icon. I click on it and it will animate the answer open. If I click on it again, it'll animate the answer closed. So now we have this toggle working properly. In the next movie, we will add in some contents so we can see this working across the series of questions and answers.

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