Front End Development Libraries Projects - Build a JavaScript Calculator

hello guys so i have a problem with 2 test 12 and 16

but the code i seem to have wrong is somewhere in here
thank you in advance

function equ(){
  display = document.getElementById("display").innerHTML
  for(let i = 0; i < display.length; i++){
    counter++;
    switch(display[i]){
        
      case "+":
        if(number === 0){
        number = display.slice(0,i);
      };
        number1 = display.slice(i+1,i+counter);
        result = +number + +number1;
        number= result;
        break;
        
        case "*":
        if(number === 0){
        number = display.slice(0,i);
      }
        number1 = display.slice(i+1,i+2);
        result = +number * +number1;
        number= result;
        break;
        
        case "-":
        if(number === 0){
        number = display.slice(0,i);
      }
        number1 = display.slice(i+1,i+2);
        console.log(number, number1);
        result = +number - +number1;
        number = result;
        break;
        
        case "/":
        if(number === 0){
        number = display.slice(0,i);
      };
        number1 = display.slice(i+1,i+(counter+1));
        result = +number / +number1;
        number= result;
        break;
    }  
}
  document.getElementById("display").innerHTML = result;
  number = 0;
  counter = 0;
};```

this is my codepen [https://codepen.io/codeMour/pen/jOpWpgM](https://codepen.io/codeMour/pen/jOpWpgM)

You need to do some logging to see what your code is doing. For instance in the multiplication:

      case "*":
        if (number === 0) {
          number = display.slice(0, i);
        }
        number1 = display.slice(i + 1, i + 2);
        console.log(`number: ${number} number1: ${number1}`);
        result = +number * +number1;
        number = result;
        break;

The logging of the numbers yields interesting results. I would proceed similarly with the subtraction.

changes the code all good expect test 16 i will look at it tommorow

just finished it thanks for the hint your console.log was amazing

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