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script.js
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script.js
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window.onload = function() {
const calculator = document.getElementById("calculator");
const displayInput = document.getElementById("display");
calculator.addEventListener("click", function(event) {
const clickedButton = event.target;
if (clickedButton.tagName === "INPUT") {
const buttonValue = clickedButton.value;
switch (buttonValue) {
case "AC":
clearAll();
break;
case "DE":
de();
break;
case "=":
calculate();
break;
default:
updateDisplayInput(buttonValue);
}
}
});
function updateDisplayInput(input){
displayInput.value += input;
}
function calculate(){
if(displayInput.value == ""){
return null;
} else {
displayInput.value = eval(displayInput.value);
}
}
function clearAll(){
displayInput.value = "";
}
function de(){
displayInput.value = displayInput.value.substring(0, displayInput.value.length - 1);
}
};