diff --git a/index.js b/index.js index 0ad2477..d7c064d 100644 --- a/index.js +++ b/index.js @@ -105,6 +105,10 @@ for(let i = 0; i < operatorButton.length; i++){ //--------------------- This is for clicking equal btn --------------------- const equalButton = document.querySelector(".equal"); equalButton.addEventListener("click", function(){ + if(calculation.operator == null){ + return; + } + calculation.secondNum = Number(document.querySelector(".display p").innerHTML); calculation.result = calculate(calculation.firstNum, calculation.secondNum, calculation.operator); calculation.operator = null;