Voice Calculator
Tags: html, css, javascript
Published: 2020-11-25 06:56:07

Creating a Voice Calculator Using Html Css And Javascript :

//Html Code :
     <html>
	<head>
		<link href="https://fonts.googleapis.com/css?family=Open+Sans:600,700" rel="stylesheet">
		<title>Voice Calculator</title>
	</head>
	<body>
	<div id="container">
			                 <div id="calculator">
        <div id="result">
					       <div id="output-text">
    <div id="history">
							<p id="history-value"></p>
						</div>
<div id="output">
							<p id="output-value"></p>
						</div>
					</div>
<div id="output-microphone">
						<span id="microphone">
				</span>
<span class="tooltip">Operations are plus, minus, multiply, divide &amp; reminder
						The user input format is number + operation + number<br><br>
						Eg: 2 multiply 5 will be 2 &times 5
						</span>
					</div>
				</div>
				<div id="keyboard">
					<button class="operator" id="clear">C</button>
					<button class="operator" id="backspace">CE</button>
					<button class="operator" id="%">%</button>
					<button class="operator" id="/">&#247;</button>
					<button class="number" id="7">7</button>
					<button class="number" id="8">8</button>
					<button class="number" id="9">9</button>
					<button class="operator" id="*">&times;</button>
					<button class="number" id="4">4</button>
					<button class="number" id="5">5</button>
					<button class="number" id="6">6</button>
					<button class="operator" id="-">-</button>
					<button class="number" id="1">1</button>
					<button class="number" id="2">2</button>
					<button class="number" id="3">3</button>
					<button class="operator" id="+">+</button>
					<button class="empty" id="empty"></button>
					<button class="number" id="0">0</button>
					<button class="empty" id="empty"></button>
					<button class="operator" id="=">=</button>
				</div>
			</div>
		</div>
		
	</body>
</html>

//Css Code :
      body{
	font-family: 'Open Sans',sans-serif;
	background-color: black;
}
#container{
	width: 1000px;
	height: 550px;
	background-image: linear-gradient(rgba(0,0,0,0.3),rgba(0,0,0,0.3)), url(BG1.jpg);
	margin: 20px auto;	
}
#calculator{
	width: 320px;
	height: 520px;
	background-color: #eaedef;
	margin: 0 auto;
	top: 20px;
	position: relative;
	border-radius: 5px;
	box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
}
#result{
	height: 120px;
}
#history{
	text-align: right;
	height: 20px;
	margin: 0 20px;
	padding-top: 20px;
	font-size: 15px;
	color: #919191;
}
#output{
	text-align: right;
	height: 60px;
	margin: 10px 20px;
	font-size: 30px;
}
#output-text{
	width: 250px;
	height: 120px;
	float: left;
}
#microphone{
	height: 30px;
	width: 30px;
	float: right;
	background-image: url(mic.png);
	background-size: 100% 100%;
	border-radius: 50%;
	margin: 20px;
	margin-top: 45px;
}
.record{	
	animation: microphone-animation 1.5s infinite;
}
@Keyframes microphone-animation{
	0%{
		transform: scale(0.9);
	}
	70%{
		transform: scale(1);
		box-shadow: 0 0 0 10px rgba(0,148,255,0.4);
		
	}
	100%{
		transform: scale(0.9);
		box-shadow: 0 0 0 0 rgba(0,148,255,0);
	}
}
.tooltip{
	width: 200px;
	font-size: 9px;
	position: absolute;
	background-color: #dddddd;
	color: #636363;
	padding: 10px;
	top: 45px;
	transform: translateX(50px);
	border-radius: 5px;
	visibility: hidden;
}
.tooltip::before{
	content: '';
	position: absolute;
	border-width: 5px;
	border-style: solid;
	border-color:transparent #dddddd transparent transparent;
	left: 0;
	margin-left: -10px;
}
#output-microphone:hover .tooltip{
	visibility: visible;
}
#keyboard{
	height: 400px;
}
.operator, .number, .empty{
	width: 50px;
	height: 50px;
	margin: 15px;
	float: left;
	border-radius: 50%;
	border-width: 0;
	font-weight: bold;
	font-size: 15px;
}
                    .number, .empty{
	background-color: #eaedef;
                }
.number, .operator{
	cursor: pointer;
}
                .operator:active, .number:active{
	font-size: 13px;
                }
.operator:focus, .number:focus, .empty:focus{
	outline: 0;
}
button:nth-child(4){
	font-size: 20px;
	background-color: #20b2aa;
}
button:nth-child(8){
	font-size: 20px;
	background-color: #ffa500;
}
button:nth-child(12){
	font-size: 20px;
	background-color: #f08080;
}
button:nth-child(16){
	font-size: 20px;
	background-color: #7d93e0;
}
button:nth-child(20){
	font-size: 20px;
	background-color: #9477af;
}

//Javascript Code
     
    function getHistory(){
	return document.getElementById("history-value").innerText;
}
function printHistory(num){
	document.getElementById("history-value").innerText=num;
}
function getOutput(){
	return document.getElementById("output-value").innerText;
}
function printOutput(num){
	if(num==""){
		document.getElementById("output-value").innerText=num;
	}
	else{
		document.getElementById("output-value").innerText=getFormattedNumber(num);
	}	
}
                            function getFormattedNumber(num){
                                if(num=="-"){
                                    return "";
                                }
                                var n = Number(num);
                                var value = n.toLocaleString("en");
                                return value;
                            }
                            function reverseNumberFormat(num){
                                return Number(num.replace(/,/g,''));
                            }
                            var operator = document.getElementsByClassName("operator");
                            for(var i =0;i<operator.length;i++){
                                operator[i].addEventListener('click',function(){
                                    if(this.id=="clear"){
                                        printHistory("");
                                        printOutput("");
                                    }
                                    else if(this.id=="backspace"){
                                        var output=reverseNumberFormat(getOutput()).toString();
                                        if(output){//if output has a value
                                            output= output.substr(0,output.length-1);
                                            printOutput(output);
                                        }
                                    }
                                    else{
                                        var output=getOutput();
                                        var history=getHistory();
                                        if(output==""&&history!=""){
                                            if(isNaN(history[history.length-1])){
                                                history= history.substr(0,history.length-1);
                                            }
                                        }
                                        if(output!="" || history!=""){
                                            output= output==""?output:reverseNumberFormat(output);
                                            history=history+output;
                                            if(this.id=="="){
                                                var result=eval(history);
                                                printOutput(result);
                                                printHistory("");
                                            }
                                            else{
                                                history=history+this.id;
                                                printHistory(history);
                                                printOutput("");
                                            }
                                        }
                                    }

                                });
                            }
                            var number = document.getElementsByClassName("number");
                            for(var i =0;i<number.length;i++){
                                number[i].addEventListener('click',function(){
                var output=reverseNumberFormat(getOutput());
                if(output!=NaN){ //if output is a number
                    output=output+this.id;
                    printOutput(output);
                }
            });
        }
        var microphone = document.getElementById('microphone');
microphone.onclick=function(){
	microphone.classList.add("record");
	var recognition = new (window.SpeechRecognition || window.webkitSpeechRecognition || window.mozSpeechRecognition || window.msSpeechRecognition)();
	recognition.lang = 'en-us';
	recognition.start();
	operations = {"plus":"+",
				 "minus":"-",
				 "multiply":"*",
				 "multiplied":"*",
				 "divide":"/",
				 "divided":"/",
				 "reminder":"%"
                 }
	
	recognition.onresult = function(event){
		var input = event.results[0][0].transcript;
		for(property in operations){
			input= input.replace(property, operations[property]);
		}
		document.getElementById("output-value").innerText = input;
		setTimeout(function(){
			evaluate(input);
		},2000);
		microphone.classList.remove("record");
	}
	
}
function evaluate(input){
	try{
		var result = eval(input);
		document.getElementById("output-value").innerText = result;
	}
	catch(e){
		console.log(e);
		document.getElementById("output-value").innerText = "";
	}
}           


//End Of the Codes

-----------------------------Thank You----------------------------