javascript-calculator | Online calculator that allows multiple operations | Math library

There is one project challenge on freecodecamp about building a calculator and I just managed to pass all the tests but when looking back on my code, the section dealing with the operations are barely readable. I've read some articles online regarding how to reduce the complexity of conditionals and the principles to keep in mind for more easy-to-understand logic.

However, figuring out the achievable logics for this task in javascript is quite challenging to me now. I was trying to meet two conditions with this section of code as follows:

User Story #13: If 2 or more operators are entered consecutively, the operation performed should be the last operator entered (excluding the negative (-) sign). For example, if 5 + * 7 = is entered, the result should be 35 (i.e. 5 * 7); if 5 * - 5 = is entered, the result should be -25 (i.e. 5 * (-5)).

User Story #14: Pressing an operator immediately following = should start a new calculation that operates on the result of the previous evaluation.

Here is the link to the page for this particular challenge and this is the link to the code I wrote by far.

Is there any tips and advice on refining the code or other approaches for coping with this part?

I am a beginner in coding and while following YouTube channel WebDevSimplified, I came across below JS code for making a calculator. In the below code, I am not able to understand, how currentOperand and previousOperand are being used without defining? It looks like currentOperand is referencing to currentOperandTextElement and previousOperand to previousOperandTextElement, However its not defined anywhere in code. below is the link for GitHub repo

https://github.com/WebDevSimplified/Vanilla-JavaScript-Calculator/blob/master/script.js

Request you all to help me understand. Thank you so much.

In a Javascript Calculator being built with React, there is a switch statement that is intended to return a function. It appears that switch statements are allowed to return if they are in a function. However, there is an error when returning the function from the switch statement: TypeError: func is not a function.

Any help would be greatly appreciated.

index.js

In this React Javascript Calculator, there is a function that pushes operators onto an array so that the length of the array can be used to limit the number of decimal points allowed in a number to one decimal point per operator. An operator can immediately be entered successfully after a browser reset, but not after the clear button is clicked. Any help would be greatly appreciated.

index.js

In this React Javascript Calculator, decimal points are able to be added to numbers, but only after a complete browser refresh, and not after clicking the clear button which triggers the clear() function. How can state be completely and totally reset in the clear() function so that state becomes as if a browser refresh had been done. Any help would be greatly appreciated.

index.js

In this React Javascript Calculator this.setState({ array: displayed}); is supposed to update the array in state, but it doesn't. Is there a way to force it? Any help would be greatly appreciated.

index.js

There is a

All the buttons using this.display(e.target.id) work. Only the "clear" button which uses this.clear('display') doesn't work.

Any help would be greatly appreciated.

index.js:

I'm doing a ReactJS calculator, and I want to be able to click the numbers on my keyboard and that showing on my calculator. I wrote the following handler: