cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

Quick-add: + add another resource

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

Quick-add: + add another resource

Code Indentation

     

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

            
              <center>
<div class="calc">

    <button class="clear" onclick="buttonClick('C')">C</button>

    <div id="board"></div>

    <div class="buttons">

        <button onclick="buttonClick('7')">7</button>
        <button onclick="buttonClick('8')">8</button>
        <button onclick="buttonClick('9')">9</button>

        <button class="operator" onclick="buttonClick('+')" >+</button>
        <button onclick="buttonClick('4')">4</button>
        <button onclick="buttonClick('5')">5</button>
        <button onclick="buttonClick('6')">6</button>

        <button class="operator" onclick="buttonClick('-')">-</button>
        <button onclick="buttonClick('1')">1</button>
        <button onclick="buttonClick('2')">2</button>
        <button onclick="buttonClick('3')">3</button>

        <button class="operator" onclick="buttonClick('*')">*</button>
        <button onclick="buttonClick('0')">0</button>
        <button onclick="buttonClick('.')">.</button>
        <button class="eval" onclick="buttonClick('=')">=</button>
        <button class="operator" onclick="buttonClick('/')">÷</button>


    </div>
</div>
</center>


            
          
!
            
              /* STYLES of CALCULATOR APP */

/* font */
@import url('https://fonts.googleapis.com/css?family=Fresca');

/* DIVS' STYLES */

div.calc {
    background-color: white;
    border: solid 2px #83f774;
    border-radius: 20px;
    box-shadow: 0px 6px 10px #83f774;
    width: 500px;
    padding: 10px;
    }

div.buttons{
    padding: 5px;
    margin: 5px;
    width: 400px;
}
div#board{
    background-color: #ff5b5b;
    border-radius: 10px;
    box-shadow: 0px 0.1px 10px #ff3030;
    color: white;
    font-family: 'Fresca';
    font-weight: bold;
    font-size: 25px;
    text-align: right;
    width: 380px;
    height: 40px;
    padding: 10px 5px 2px 5px;
}

/* BUTTONS' STYLES */
button{
    background-color: #83f774;
    border: none;
    border-radius: 10px;
    box-shadow: 0px 3px 1px #15b700;
    color: white;
    cursor: pointer;
    font-size: 30px;
    font-weight: bold;
    font-family: 'Fresca';
    margin-bottom: 5px;
    width:95px;
    height: 95px;
    transition: border-radius 0.5s,
                opacity 0.5s, transform 0.2s,
                box-shadow 0.2s;
}

/* eval, operator and clear buttons' styles*/
button.eval{
    background-color: #00def7;
    box-shadow: 0px 3px 1px #008c82;
}

/*-----------------------------------*/
button.operator{
    background-color: #bbff56;
    box-shadow: 0px 3px 1px #64a800;
}

/*--------------------------------------*/
button.clear{
    background-color: #ff5b5b;
    box-shadow: 0px 2px 5px #960000;
    float: left;
    margin-top: 5px;
    margin-left: 10px;
    height:35px;
    padding-right: 10px;
    padding-left: 10px;
    width:35px;
}

/* button hover and click(active) styles */
button:hover{
    border-radius: 20px;
    opacity: 0.7;
}

button:active{
    box-shadow: none;
    transform: translateY(3px);
}

button:focus {outline:0;}/*geting rid of blue line on clicking button*/

button.clear:hover{
    border-radius: 15px;
}

            
          
!
            
              function buttonClick(button){
    var display = document.getElementById('board');

    // Checking for numeric buttons
    // if it is number it will add it to the board

    if (isNaN(button) == false) {
        display.innerHTML += button;
    }

    // for clear, operator and eval button
    if(button == 'C'){
        display.innerHTML= '';
    }
    // ----- operator buttons -----
    if (button == '+' || button == '-' || button == '*' || button == '/'){
        // for adding operator button to the expression (not changing)
        if (isNaN(display.innerHTML.slice(-1)) == false && display.innerHTML.length != 0){
            display.innerHTML += button;
        }

        // for adding minus to empty board
        if (button == '-' && display.innerHTML.length == 0){
            display.innerHTML = '-'
                }

        // for changing operator
        if(isNaN(display.innerHTML.slice(-1)) == true){
            display.innerHTML = display.innerHTML.slice(0, -1) + button;
        }

    }
    // ------------------------
    else if (button == '.'){
        if(display.innerHTML.slice(-1) != '.'){
           display.innerHTML+= '.';
       }
    }
    // eval button
    else if (button == '='){
        if (isNaN(display.innerHTML.slice(-1)) == true){
            display.innerHTML= eval(display.innerHTML.slice(0,-1));
        }
        else {display.innerHTML= eval(display.innerHTML);}

    }


}

            
          
!
999px
Loading ..................

Console