如何在JavaScript中引用或从单个值参数提取？

Question

I understand that the parameter in this exercise is holding a value that is a string. I have tried these solutions:

function addingGrace(s) {
console.log ("'only the beginning!'");

}

/* Do not modify code below this line */

console.log(addingGrace('only the beginning'), '<-- should be "only the beginning!"');

What I do not understand is how to pull the value out of the parameter. All of the tutorials that I have found have multiple parameters.

Here is the original exercise though:

Modify the function to return the given string with an exclamation mark added to the end of it.

function addingGrace(s) {

}

/* Do not modify code below this line */

console.log(addingGrace('only the beginning'), '<-- should be "only the beginning!"');

Does anyone know where I can find a resource that references this type of work with single value parameters. I do not want the answer to this particular exercise as it is for an entrance exam for a coding school. I really wanted to figure this out myself but I am stuck.

Answer 1

You just need to return the parameter s which holds the value only the beginning .

Please see code snippet.

 function addingGrace(s) { return s +"!"; } /* Do not modify code below this line */ console.log(addingGrace('only the beginning'), '<-- should be "only the beginning!"'); 

Answer 2

You can just use backticks (template literals/strings). You also need to return from the function:

 function addingGrace(s) { return `"${s}"`; } console.log(addingGrace('only the beginning')); 

Answer 3

 function addingGrace(s) { return (s + '!') } console.log(addingGrace('only the beginning')) 

Answer 4

The code:

function addingGrace(s) {
  console.log ("'only the beginning!'");
}

does not work because the code is already logging your request instead of returning the text you add.

You probaly would want to do is this:

function addingGrace(s) {
  return(s);
}

But because the exercise wanted the text to have an exclamation point do this:

function addingGrace(s) {
  return(s + "!");
}

I hope I helped!