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diff --git a/_posts/2019-07-30-dynamic-checkboxes.md b/_posts/2019-07-30-dynamic-checkboxes.md deleted file mode 100644 index cb53ee4..0000000 --- a/_posts/2019-07-30-dynamic-checkboxes.md +++ /dev/null @@ -1,414 +0,0 @@ ---- -layout: post -title: "Dynamic Checkboxes" -date: 2019-07-30 ---- - - -Checkboxes are used quite frequently on forms across the web. Whether you're selecting a pricing plan during a site's sign-up process or just simply selecting to opt-out from a newsletter, you have most likely interacted with some form of checkbox element. - -What if we could make everyday checkboxes more beautiful *and* more intuitive? *It's easier than you think*. We only need a small amount of CSS and JavaScript to make considerable improvements to your average checkbox UX. - -Let's get into it. - -## What we are building -Take a look and play around with the CodePen below to get an idea of what we are going to build. The premise is a simple add-on pricing form which calculates the additional monthly total to the user in real-time. - -[Live CodePen Example](https://codepen.io/bradleytaunt/pen/rXWEpy/) - -## The Structure (HTML) - -As always, we will start by breaking down the "bones" of the HTML structure for this checkbox form. Let's take a look at the HTML in it's entirety (don't worry, it is a lot more simple than it seems at first glance): - - - <h2>Add-ons</h2> - - <input class="checkbox-btn" name="checkbox-collection" id="checkbox-1" type="checkbox" value="49"> - <label class="checkbox-label" for="checkbox-1"> - <span> - White-labeled Domain - <em>Use your own custom domain with SSL security included.</em> - </span> - <span>$49/mo</span> - </label> - - <input class="checkbox-btn" name="checkbox-collection" id="checkbox-2" type="checkbox" value="49"> - <label class="checkbox-label" for="checkbox-2"> - <span> - API Access - <em>Make API calls to perform custom serving and account actions.</em> - </span> - <span>$49/mo</span> - </label> - - <input class="checkbox-btn" name="checkbox-collection" id="checkbox-3" type="checkbox" value="349"> - <label class="checkbox-label" for="checkbox-3"> - <span> - Priority Support - <em>A dedicated account manager to assist your team with ongoing deployments.</em> - </span> - <span>$349/mo</span> - </label> - - <div class="total-cost"> - <h2>Your Plan</h2> - <div> - <span>$</span> - <span id="total-cost-inner">0</span> - <input id="output" type="text" value="0" disabled/> - <span>/mo</span> - </div> - </div> - - -### The checkbox inputs & labels - - - <!-- #1 --> - <input class="checkbox-btn" name="checkbox-collection" id="checkbox-1" type="checkbox" value="49"> - - <!-- #2 --> - <label class="checkbox-label" for="checkbox-1"> - - <!-- #2i --> - <span> - White-labeled Domain - <em>Use your own custom domain with SSL security included.</em> - </span> - - <!-- #2ii --> - <span>$49/mo</span> - - </label> - - -1. This input will be hidden via `position:absolute` by default. All checkbox inputs need to share the same `name` value and all checkboxes require their our custom `id` that will link with the corresponding `for` value on the label. - -2. This label needs it's `for` value to correspond with it's partnered checkbox. - - i) The first span holds the title and description information of the add-on - - ii) The last span holds the cost associated with the current add-on - -### The total cost container output - - - <!-- #1 --> - <div class="total-cost"> - - <h2>Your Plan</h2> - - <!-- #2 --> - <div> - - <!-- #2i --> - <span>$</span> - - <!-- #2ii --> - <span id="total-cost-inner">0</span> - - <!-- #2iii --> - <input id="output" type="text" value="0" disabled/> - - <!-- #2iv --> - <span>/mo</span> - - </div> - - </div> - - -1. A simple `div` with a class we can easily target later - -2. A `div` parent container is needed to house all the total `spans` together (more on this when we get into the CSS) - - i) The first `span` holds the static currency symbol - - ii) The second `span` is where our updated cost will be injected - - iii) This input field is required for us to take-in the `value` of the associated `:checked` inputs and add them together. This current value is then used for the injection into the second `span` - - iv) The final `span` simply holds the static monthly duration content - -All that's all we need for the HTML! - -## The Visuals (CSS) - -Again, lets take a look at the entire file before we break it down step-by-step: - - - .checkbox-label { - align-items: center; - background-color: none; - border: 1px solid lightgrey; - border-radius: 5px; - cursor: pointer; - display: flex; - font-weight: 600; - justify-content: space-between; - margin: 0 auto 10px; - padding: 20px 20px 20px 70px; - position: relative; - transition: .3s ease all; - width: 100%; - } - .checkbox-label span:last-child { - padding: 0 0 0 20px; - } - .checkbox-label:hover { - background-color: rgba(255,255,255,0.2); - } - .checkbox-label:before { - background-repeat: no-repeat; - background-position: center; - background-size: 15px; - border: 1px solid lightgrey; - border-radius: 50%; - content:''; - height: 30px; - left: 20px; - position: absolute; - top: calc(50% - 15px); - transition: .3s ease background-color; - width: 30px; - } - .checkbox-label:hover:before { - background-image: - url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="23.571429" height="23.571429" viewBox="0.000000 -47.142857 23.571429 23.571429"><path fill="lightgrey" d="M23.571429 -36.964286L23.571429 -33.750000C23.571429 -33.303571 23.415179 -32.924107 23.102679 -32.611607C22.790179 -32.299107 22.410714 -32.142857 21.964286 -32.142857L15.000000 -32.142857L15.000000 -25.178571C15.000000 -24.732143 14.843750 -24.352679 14.531250 -24.040179C14.218750 -23.727679 13.839286 -23.571429 13.392857 -23.571429L10.178571 -23.571429C9.732143 -23.571429 9.352679 -23.727679 9.040179 -24.040179C8.727679 -24.352679 8.571429 -24.732143 8.571429 -25.178571L8.571429 -32.142857L1.607143 -32.142857C1.160714 -32.142857 0.781250 -32.299107 0.468750 -32.611607C0.156250 -32.924107 0.000000 -33.303571 0.000000 -33.750000L0.000000 -36.964286C0.000000 -37.410714 0.156250 -37.790179 0.468750 -38.102679C0.781250 -38.415179 1.160714 -38.571429 1.607143 -38.571429L8.571429 -38.571429L8.571429 -45.535714C8.571429 -45.982143 8.727679 -46.361607 9.040179 -46.674107C9.352679 -46.986607 9.732143 -47.142857 10.178571 -47.142857L13.392857 -47.142857C13.839286 -47.142857 14.218750 -46.986607 14.531250 -46.674107C14.843750 -46.361607 15.000000 -45.982143 15.000000 -45.535714L15.000000 -38.571429L21.964286 -38.571429C22.410714 -38.571429 22.790179 -38.415179 23.102679 -38.102679C23.415179 -37.790179 23.571429 -37.410714 23.571429 -36.964286ZM23.571429 -36.964286"></path></svg>'); - } - .checkbox-label span { - -webkit-user-select: none; - -moz-user-select: none; - user-select: none; - } - .checkbox-label span em { - display: block; - font-size: 80%; - font-style: normal; - font-weight: 400; - line-height: 1.2; - } - .checkbox-btn { - position: absolute; - visibility: hidden; - } - .checkbox-btn:checked + .checkbox-label { - background-color: white; - border-color: mediumpurple; - box-shadow: 0 2px 4px rgba(0,0,0,0.05); - } - .checkbox-btn:checked + .checkbox-label:before { - background-color: mediumpurple; - background-image: - url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="25.948661" height="19.888393" viewBox="2.025670 -40.011161 25.948661 19.888393"><path fill="white" d="M27.974330 -36.127232C27.974330 -35.680804 27.818080 -35.301339 27.505580 -34.988839L15.385045 -22.868304L13.108259 -20.591518C12.795759 -20.279018 12.416295 -20.122768 11.969866 -20.122768C11.523438 -20.122768 11.143973 -20.279018 10.831473 -20.591518L8.554688 -22.868304L2.494420 -28.928571C2.181920 -29.241071 2.025670 -29.620536 2.025670 -30.066964C2.025670 -30.513393 2.181920 -30.892857 2.494420 -31.205357L4.771205 -33.482143C5.083705 -33.794643 5.463170 -33.950893 5.909598 -33.950893C6.356027 -33.950893 6.735491 -33.794643 7.047991 -33.482143L11.969866 -28.543527L22.952009 -39.542411C23.264509 -39.854911 23.643973 -40.011161 24.090402 -40.011161C24.536830 -40.011161 24.916295 -39.854911 25.228795 -39.542411L27.505580 -37.265625C27.818080 -36.953125 27.974330 -36.573661 27.974330 -36.127232ZM27.974330 -36.127232"></path></svg>'); - border-color: mediumpurple; - } - - .total-cost { - align-items: baseline; - border-top: 1px solid lightgrey; - display: flex; - justify-content: space-between; - margin-top: 40px; - padding: 40px 20px 0; - } - .total-cost div { - align-items: baseline; - display: flex; - } - .total-cost span:nth-child(1) { - align-self: flex-start; - padding-top: 5px; - } - .total-cost span:nth-child(2) { - font-size: 32px; - font-weight: bold; - } - .total-cost input { - display: none; - } - - @media(max-width:480px) { - .checkbox-label { - align-items: flex-start; - flex-direction: column; - flex-wrap: wrap; - } - .checkbox-label span:last-child { - padding: 10px 0 0 0; - } - } - - -### The checkbox label - - - /* - This is the main element for each checkbox "container". - Inside it houses the title, description and price. - */ - .checkbox-label { - align-items: center; - background-color: none; - border: 1px solid lightgrey; - border-radius: 5px; - cursor: pointer; - display: flex; - font-weight: 600; - justify-content: space-between; - margin: 0 auto 10px; - padding: 20px 20px 20px 70px; - position: relative; - transition: .3s ease all; - width: 100%; - } - .checkbox-label:hover { - background-color: rgba(255,255,255,0.2); - } - - /* Update the label styling when the input is :checked */ - .checkbox-btn:checked + .checkbox-label { - background-color: white; - border-color: mediumpurple; - box-shadow: 0 2px 4px rgba(0,0,0,0.05); - } - - -### The custom checkbox input - -We need to hide the browser's default checkbox input and replace it with our own using pseudo selectors. - - - /* Hide browser default input */ - .checkbox-btn { - position: absolute; - visibility: hidden; - } - - /* Our custom input checkbox */ - .checkbox-label:before { - background-repeat: no-repeat; - background-position: center; - background-size: 15px; - border: 1px solid lightgrey; - border-radius: 50%; - content:''; - height: 30px; - left: 20px; - position: absolute; - top: calc(50% - 15px); - transition: .3s ease background-color; - width: 30px; - } - - /* - Here we add a simple '+' icon on hover - to our custom pseudo element. - Adding it as an inline SVG gives us the - ability to fully customize it's styling - */ - .checkbox-label:hover:before { - background-image: - url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="23.571429" height="23.571429" viewBox="0.000000 -47.142857 23.571429 23.571429"><path fill="lightgrey" d="M23.571429 -36.964286L23.571429 -33.750000C23.571429 -33.303571 23.415179 -32.924107 23.102679 -32.611607C22.790179 -32.299107 22.410714 -32.142857 21.964286 -32.142857L15.000000 -32.142857L15.000000 -25.178571C15.000000 -24.732143 14.843750 -24.352679 14.531250 -24.040179C14.218750 -23.727679 13.839286 -23.571429 13.392857 -23.571429L10.178571 -23.571429C9.732143 -23.571429 9.352679 -23.727679 9.040179 -24.040179C8.727679 -24.352679 8.571429 -24.732143 8.571429 -25.178571L8.571429 -32.142857L1.607143 -32.142857C1.160714 -32.142857 0.781250 -32.299107 0.468750 -32.611607C0.156250 -32.924107 0.000000 -33.303571 0.000000 -33.750000L0.000000 -36.964286C0.000000 -37.410714 0.156250 -37.790179 0.468750 -38.102679C0.781250 -38.415179 1.160714 -38.571429 1.607143 -38.571429L8.571429 -38.571429L8.571429 -45.535714C8.571429 -45.982143 8.727679 -46.361607 9.040179 -46.674107C9.352679 -46.986607 9.732143 -47.142857 10.178571 -47.142857L13.392857 -47.142857C13.839286 -47.142857 14.218750 -46.986607 14.531250 -46.674107C14.843750 -46.361607 15.000000 -45.982143 15.000000 -45.535714L15.000000 -38.571429L21.964286 -38.571429C22.410714 -38.571429 22.790179 -38.415179 23.102679 -38.102679C23.415179 -37.790179 23.571429 -37.410714 23.571429 -36.964286ZM23.571429 -36.964286"></path></svg>'); - } - - /* - When the checkbox input is :checked we need to - update the inline SVG to use a checkmark symbol - */ - .checkbox-btn:checked + .checkbox-label:before { - background-color: mediumpurple; - background-image: - url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="25.948661" height="19.888393" viewBox="2.025670 -40.011161 25.948661 19.888393"><path fill="white" d="M27.974330 -36.127232C27.974330 -35.680804 27.818080 -35.301339 27.505580 -34.988839L15.385045 -22.868304L13.108259 -20.591518C12.795759 -20.279018 12.416295 -20.122768 11.969866 -20.122768C11.523438 -20.122768 11.143973 -20.279018 10.831473 -20.591518L8.554688 -22.868304L2.494420 -28.928571C2.181920 -29.241071 2.025670 -29.620536 2.025670 -30.066964C2.025670 -30.513393 2.181920 -30.892857 2.494420 -31.205357L4.771205 -33.482143C5.083705 -33.794643 5.463170 -33.950893 5.909598 -33.950893C6.356027 -33.950893 6.735491 -33.794643 7.047991 -33.482143L11.969866 -28.543527L22.952009 -39.542411C23.264509 -39.854911 23.643973 -40.011161 24.090402 -40.011161C24.536830 -40.011161 24.916295 -39.854911 25.228795 -39.542411L27.505580 -37.265625C27.818080 -36.953125 27.974330 -36.573661 27.974330 -36.127232ZM27.974330 -36.127232"></path></svg>'); - border-color: mediumpurple; - } - - -### The total cost container - -We only need some very basic flexbox styling for our bottom "total" container: - - - .total-cost { - align-items: baseline; - border-top: 1px solid lightgrey; - display: flex; - justify-content: space-between; - margin-top: 40px; - padding: 40px 20px 0; - } - .total-cost div { - align-items: baseline; - display: flex; - } - .total-cost span:nth-child(1) { - align-self: flex-start; - padding-top: 5px; - } - .total-cost span:nth-child(2) { - font-size: 32px; - font-weight: bold; - } - - /* - This input is used in our JavaScript - look at the - function part of this post to understand why - */ - .total-cost input { - display: none; - } - - -### Last but not least - mobile - -Now we just ensure that on smaller devices our checkbox labels render nicely: - - - @media(max-width:480px) { - /* - Avoids the inner label content from squishing together - and becoming unreadable - */ - .checkbox-label { - align-items: flex-start; - flex-direction: column; - flex-wrap: wrap; - } - .checkbox-label span:last-child { - padding: 10px 0 0 0; - } - } - - -That's it for the styling! - -## The Function (JS) - -As you can see below, we only need a very minor amount of JavaScript to accomplish our total cost "injection". - - - window.onload=function(){ - - // Place the default browser checkbox inputs into a variable - var inputs = document.getElementsByClassName('checkbox-btn') - - // Now we loop through the inputs and check if they are - // greater than zero. If so, we run our function. - for (var i=0; i < inputs.length; i++) { - - inputs[i].onchange = function() { - - // Create `add` variable which takes the :checked input value - var add = this.value * (this.checked ? 1 : -1); - - // We grab the current total value on our hidden input field and return it - // as a floating point number - // (since in this use case it will be a price number based on currency) - var new_total = parseFloat(document.getElementById('output').value); - - // Now we simply add the existing total value with the newly ":checked" input value - var updated_total = document.getElementById('output').value=new_total + add - - // Place the new updated total directly inside the `total-cost-inner` span element - document.getElementById('total-cost-inner').innerHTML = updated_total; - } - - } - } - - -That's it! Feel free to play with the demo some more at the top of the post, or check out the [CodePen source directly](https://codepen.io/bradleytaunt/pen/rXWEpy). |