Learn how to filter a DIV element based on it's class name.
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July 21, 2020 21:22
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[How TO - Filter DIV Elements] #w3school #How TO -#Filter-Elements #HTML #CSS #javascript
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| <!DOCTYPE html> | |
| <html> | |
| <style> | |
| .filterDiv { | |
| float: left; | |
| background-color: #2196F3; | |
| color: #ffffff; | |
| width: 100px; | |
| line-height: 100px; | |
| text-align: center; | |
| margin: 2px; | |
| display: none; | |
| } | |
| .show { | |
| display: block; | |
| } | |
| .container { | |
| margin-top: 20px; | |
| overflow: hidden; | |
| } | |
| /* Style the buttons */ | |
| .btn { | |
| border: none; | |
| outline: none; | |
| padding: 12px 16px; | |
| background-color: #f1f1f1; | |
| cursor: pointer; | |
| } | |
| .btn:hover { | |
| background-color: #ddd; | |
| } | |
| .btn.active { | |
| background-color: #666; | |
| color: white; | |
| } | |
| </style> | |
| <body> | |
| <h2>Filter DIV Elements</h2> | |
| <div id="myBtnContainer"> | |
| <button class="btn active" onclick="filterSelection('all')"> Show all</button> | |
| <button class="btn" onclick="filterSelection('cars')"> Cars</button> | |
| <button class="btn" onclick="filterSelection('animals')"> Animals</button> | |
| <button class="btn" onclick="filterSelection('fruits')"> Fruits</button> | |
| <button class="btn" onclick="filterSelection('colors')"> Colors</button> | |
| </div> | |
| <div class="container"> | |
| <div class="filterDiv cars">BMW</div> | |
| <div class="filterDiv colors fruits">Orange</div> | |
| <div class="filterDiv cars">Volvo</div> | |
| <div class="filterDiv colors">Red</div> | |
| <div class="filterDiv cars animals">Mustang</div> | |
| <div class="filterDiv colors">Blue</div> | |
| <div class="filterDiv animals">Cat</div> | |
| <div class="filterDiv animals">Dog</div> | |
| <div class="filterDiv fruits">Melon</div> | |
| <div class="filterDiv fruits animals">Kiwi</div> | |
| <div class="filterDiv fruits">Banana</div> | |
| <div class="filterDiv fruits">Lemon</div> | |
| <div class="filterDiv animals">Cow</div> | |
| </div> | |
| <script> | |
| filterSelection("all") | |
| function filterSelection(c) { | |
| var x, i; | |
| x = document.getElementsByClassName("filterDiv"); | |
| if (c == "all") c = ""; | |
| for (i = 0; i < x.length; i++) { | |
| w3RemoveClass(x[i], "show"); | |
| if (x[i].className.indexOf(c) > -1) w3AddClass(x[i], "show"); | |
| } | |
| } | |
| function w3AddClass(element, name) { | |
| var i, arr1, arr2; | |
| arr1 = element.className.split(" "); | |
| arr2 = name.split(" "); | |
| for (i = 0; i < arr2.length; i++) { | |
| if (arr1.indexOf(arr2[i]) == -1) {element.className += " " + arr2[i];} | |
| } | |
| } | |
| function w3RemoveClass(element, name) { | |
| var i, arr1, arr2; | |
| arr1 = element.className.split(" "); | |
| arr2 = name.split(" "); | |
| for (i = 0; i < arr2.length; i++) { | |
| while (arr1.indexOf(arr2[i]) > -1) { | |
| arr1.splice(arr1.indexOf(arr2[i]), 1); | |
| } | |
| } | |
| element.className = arr1.join(" "); | |
| } | |
| // Add active class to the current button (highlight it) | |
| var btnContainer = document.getElementById("myBtnContainer"); | |
| var btns = btnContainer.getElementsByClassName("btn"); | |
| for (var i = 0; i < btns.length; i++) { | |
| btns[i].addEventListener("click", function(){ | |
| var current = document.getElementsByClassName("active"); | |
| current[0].className = current[0].className.replace(" active", ""); | |
| this.className += " active"; | |
| }); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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very good!