get function retrun true false and catch in var js

To capture the return value of a function that can return true or false and also handle any errors using catch block in JavaScript, you can use the following code:

let result;

try {
  result = yourFunction(); // replace yourFunction with the actual function name
} catch (error) {
  console.error(error);
}

if (result === true) {
  // do something if the function returned true
} else if (result === false) {
  // do something if the function returned false
} else {
  // handle any unexpected return value
  console.error('Unexpected return value:', result);
}

This code first declares a variable result to capture the return value of the function. Then it tries to call the function using yourFunction() and assigns the result to result. If the function throws an error, the catch block will log the error to the console.

After that, the code checks the value of result. If it's true, it executes the first block of code. If it's false, it executes the second block of code. If result has any other value, it logs an error to the console.