How to add filter with Portfolio Gallery using HTML, CSS and JavaScript ?

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The portfolio gallery is useful when your website contains different types of content or so many contents. With the help of a portfolio gallery, you can easily display all the contents on your front page to the user. But if user wants some specific contents then we need to attach filters on the portfolio. In this article, we will add filters using JavaScript. Before proceeding into this article you can see the article ‘how to create a Portfolio Gallery using HTML and CSS?‘.
Creating Structure: In this section, we will create the basic website structure of the portfolio. Here, we will attach the title attribute so the user can know what will be the content type on each grid of the portfolio.

Portfolio Gallery

HTML code: In this section, we will design the basic structure of Portfolio Gallery.

html

<!DOCTYPE html> 
<html> 
  
<head> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1"> 
</head> 
  
<body> 
  
    <!-- Title and tag -->
    <div class="container"> 
        <h1>zambiatek</h1> 
        <h3>A Computer Science Portal for Geeks</h3> 
        <hr> 
  
        <!-- Content of the body-->
        <h2>Portfolio of Languages</h2> 
  
        <!-- Button foreach group -->
        <div id="filtering"> 
            <button class="bttn active"
                    onclick="zambiatekportal('all')">  
            Show all 
            </button> 
            <button class="bttn"
                    onclick="zambiatekportal('Markup')">  
            Markup 
            </button> 
            <button class="bttn"
                    onclick="zambiatekportal('Style')">  
            Style 
            </button> 
            <button class="bttn"
                    onclick="zambiatekportal('Scripting')">  
            Scripting 
            </button> 
        </div> 
  
        <!-- Portfolio Gallery Grid -->
        <div class="row"> 
            <div class="column Markup"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/html.png"
                        alt="HTML" style="width:100%"> 
                    <h3><a href="#"> 
                        HTML Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        HTML stands for Hyper Text Markup 
                        Language. It is used to design web 
                        pages using markup language. HTML 
                        is the combination of Hypertext 
                        and Markup language. Hypertext 
                        defines the link between the web 
                        pages. 
                    </p> 
                </div> 
            </div> 
            <div class="column Styleshit"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/CSS.png"
                        alt="CSS" style="width:100%"> 
                    <h3><a href="#"> 
                        CSS Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        Cascading Style Sheets, fondly 
                        referred to as CSS, is a simply 
                        designed language intended to 
                        simplify the process of making 
                        web pages presentable. CSS allows 
                        you to apply styles to web pages. 
                    </p> 
                </div> 
            </div> 
            <div class="column Scripting"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/php-1.png"
                        alt="" style="width:100%"> 
                    <h3><a href="#"> 
                        PHP Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        The term PHP is an acronym for PHP:  
                        Hypertext Preprocessor. PHP is a  
                        server-side scripting language  
                        designed specifically for web  
                        development. PHP can be easily 
                        embedded in HTML files. 
                    </p> 
                </div> 
            </div> 
            <div class="column Scripting"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/javascript.png"
                        alt="" style="width:100%"> 
                    <h3><a href="#"> 
                        JavaScript Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        Javascript was developed by Brendan 
                        Eich in 1995. At first, it was called 
                        LiveScript but was later name to  
                        JavaScript. JavaScript is the muscle 
                        of the structure 
                    </p> 
                </div> 
            </div> 
        </div> 
    </div> 
</body> 
  
</html> 

Designing Structure: In the previous section, we have created the structure of the basic website and now we are going to use CSS to design the structure of the web-page.

CSS code:

CSS

/* Wildcard styling */
* { 
    box-sizing: border-box; 
} 
  
/* Padding for whole body */
body { 
    padding: 15px; 
} 
  
.container { 
    max-width: 1200px; 
    margin: auto; 
} 
  
/* Styling h2 tag */
h1 { 
    Color: green; 
    word-break: break-all; 
} 
  
/* Anchor tag decoration */
a { 
    text-decoration: none; 
    color: #5673C8; 
} 
  
a:hover { 
    color: lightblue; 
} 
  
.row { 
    margin: 0px -14px; 
    padding: 8px; 
} 
  
.row>.column { 
    padding: 6px; 
} 
  
.column { 
    float: left; 
    width: 25%; 
    display: none; 
} 
  
/* Content decoration */
.content { 
    background-color: white; 
    padding: 10px; 
    border: 1px solid gray; 
} 
  
/* Paragraph decoration */
p { 
    display: -webkit-box; 
    -webkit-box-orient: vertical; 
    -webkit-line-clamp: 4; 
    overflow: hidden; 
} 
  
.row:after { 
    content: ""; 
    display: table; 
    clear: both; 
} 
  
.content { 
    background-color: white; 
    padding: 10px; 
    border: 1px solid gray; 
} 
  
.show { 
    display: block; 
} 
  
/* Style the filter buttons */
.bttn { 
    border: none; 
    padding: 8px 14px; 
    background-color: gray; 
} 
  
.bttn:hover { 
    background-color: #007EE5; 
    opacity: 0.8; 
} 
  
.bttn.active { 
    background-color: #007EE5; 
    color: white; 
} 
  
/* Window size 850 width set */
@media screen and (max-width: 850px) { 
    .column { 
        width: 50%; 
    } 
} 
  
/* Window size 400 width set */
@media screen and (max-width: 400px) { 
    .column { 
        width: 100%; 
    } 
} 

JavaScript code:

javascript

zambiatekportal("all") 
  
function zambiatekportal(c) { 
    var x, i; 
  
    x = document.getElementsByClassName("column"); 
  
    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("filtering"); 
var btns = btnContainer.getElementsByClassName("bttn"); 
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"; 
    }); 
} 

Combining the HTML, CSS and JavaScript Code: Combining HTML, CSS and JavaScript section code to make a complete Portfolio Gallery with the filter.

html

<!DOCTYPE html> 
<html> 
  
<head> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1"> 
  
    <style> 
           
        /* Wildcard styling */ 
        * { 
            box-sizing: border-box; 
        } 
               
        /* Padding for whole body */ 
        body { 
            padding: 15px; 
        } 
               
        .container { 
            max-width: 1200px; 
            margin: auto; 
        } 
               
        /* Styling h2 tag */ 
        h1 { 
            Color: green; 
            word-break: break-all; 
        } 
               
        /* Anchor tag decoration */ 
        a { 
            text-decoration: none; 
            color: #5673C8; 
        } 
               
        a:hover { 
            color: lightblue; 
        } 
               
        .row { 
            margin: 0px -14px; 
            padding: 8px; 
        } 
               
        .row > .column { 
            padding: 6px; 
        } 
               
        .column { 
            float: left; 
            width: 25%; 
            display: none; 
        } 
               
        /* Content decoration */ 
        .content { 
            background-color: white; 
            padding: 10px; 
            border: 1px solid gray; 
        } 
               
        /* Paragraph decoration */ 
        p { 
            display: -webkit-box; 
            -webkit-box-orient: vertical; 
            -webkit-line-clamp: 4; 
            overflow: hidden; 
        } 
               
        .row:after { 
            content: ""; 
            display: table; 
            clear: both; 
        } 
               
        .content { 
            background-color: white; 
            padding: 10px; 
            border: 1px solid gray; 
        } 
               
        .show { 
            display: block; 
        } 
               
        /* Style the filter buttons */ 
        .bttn { 
            border: none; 
            padding: 8px 14px; 
            background-color: gray; 
        } 
               
        .bttn:hover { 
            background-color: #007EE5; 
            opacity: 0.8; 
        } 
               
        .bttn.active { 
            background-color: #007EE5; 
            color: white; 
        } 
           
        /* Window size 850 width set */ 
        @media screen and (max-width: 850px) { 
            .column { 
                width: 50%; 
            } 
        } 
           
        /* Window size 400 width set */ 
        @media screen and (max-width: 400px) { 
            .column { 
                width: 100%; 
            } 
        } 
    </style> 
</head> 
  
<body> 
  
    <!-- Title and tag -->
    <div class="container"> 
        <h1>zambiatek</h1> 
        <h3>A Computer Science Portal for Geeks</h3> 
        <hr> 
  
        <!-- Content of the body-->
        <h2>Portfolio of Languages</h2> 
  
        <!-- button foreach group -->
        <div id="filtering"> 
            <button class="bttn active"
                    onclick="zambiatekportal('all')">  
            Show all 
            </button> 
            <button class="bttn"
                    onclick="zambiatekportal('Markup')">  
            Markup 
            </button> 
            <button class="bttn"
                    onclick="zambiatekportal('Style')">  
            Style 
            </button> 
            <button class="bttn"
                    onclick="zambiatekportal('Scripting')">  
            Scripting 
            </button> 
        </div> 
  
        <!-- Portfolio Gallery Grid -->
        <div class="row"> 
            <div class="column Markup"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/html.png"
                        alt="HTML" style="width:100%"> 
                    <h3><a href="#"> 
                        HTML Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        HTML stands for Hyper Text Markup 
                        Language. It is used to design web 
                        pages using markup language. HTML 
                        is the combination of Hypertext 
                        and Markup language. Hypertext 
                        defines the link between the web 
                        pages. 
                    </p> 
                </div> 
            </div> 
            <div class="column Styleshit"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/CSS.png"
                        alt="CSS" style="width:100%"> 
                    <h3><a href="#"> 
                        CSS Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        Cascading Style Sheets, fondly 
                        referred to as CSS, is a simply 
                        designed language intended to 
                        simplify the process of making 
                        web pages presentable. CSS allows 
                        you to apply styles to web pages. 
                    </p> 
                </div> 
            </div> 
            <div class="column Scripting"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/php-1.png"
                        alt="" style="width:100%"> 
                    <h3><a href="#"> 
                        PHP Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        The term PHP is an acronym for PHP:  
                        Hypertext Preprocessor. PHP is a  
                        server-side scripting language  
                        designed specifically for web  
                        development. PHP can be easily 
                        embedded in HTML files. 
                    </p> 
                </div> 
            </div> 
            <div class="column Scripting"> 
                <div class="content"> 
                    <img src= 
"https://www.zambiatek.com/wp-content/uploads/javascript.png"
                        alt="" style="width:100%"> 
                    <h3><a href="#"> 
                        JavaScript Tutorials 
                        </a> 
                    </h3> 
                    <p> 
                        Javascript was developed by Brendan 
                        Eich in 1995. At first, it was called 
                        LiveScript but was later name to  
                        JavaScript. JavaScript is the muscle 
                        of the structure 
                    </p> 
                </div> 
            </div> 
        </div> 
    </div> 
      
    <script> 
        zambiatekportal("all") 
       
        function zambiatekportal(c) { 
            var x, i; 
              
            x = document.getElementsByClassName("column"); 
              
            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("filtering"); 
        var btns = btnContainer.getElementsByClassName("bttn"); 
        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> 