CodeAlpha_Calculatortask/script.js at main · san-thiya-123/CodeAlpha_Calculatortask · GitHub

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const screen = document.getElementById("screen");

const buttons = document.querySelectorAll("button");

buttons.forEach(button => {

button.addEventListener("click", () => {

const value = button.innerText;

if(value==="AC"){

screen.value="";

}

else if(value==="DEL"){

screen.value=screen.value.slice(0,-1);

}

else if(value==="="){

calculate();

}

else{

screen.value+=value;

}

});

});

function calculate(){

try{

let expression=screen.value.replace(/%/g,"/100");

screen.value=eval(expression);

}

catch{

screen.value="Error";

setTimeout(()=>{

screen.value="";

},1200);

}

}

// Keyboard Support

document.addEventListener("keydown",(e)=>{

const key=e.key;

if(

"0123456789+-*/.%".includes(key)

){

screen.value+=key;

}

else if(key==="Enter"){

e.preventDefault();

calculate();

}

else if(key==="Backspace"){

screen.value=screen.value.slice(0,-1);

}

else if(key==="Escape"){

screen.value="";

}

});