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JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Giving Information to Functions

Posted by john larson
john larson
16,594 Points

is this a function that accepts two arguments

function max(low, high) { }

2 Answers

Megan Babbitt
Megan Babbitt
7,826 Points
Megan Babbitt
Megan Babbitt
7,826 Points

Yes the basic formula is :

function name(parameter1, parameter2, parameter3) {
    code to be executed
}
LaVaughn Haynes
LaVaughn Haynes
12,397 Points
LaVaughn Haynes
LaVaughn Haynes
12,397 Points

She's correct. Here's an example of how you could define and use it:

//define your function
function max(low, high) {
    var yourNumber;
    do{
        yourNumber = prompt('Pick a number between ' + low + ' and ' + high +':');
    }while(yourNumber <= low || yourNumber >= high);

    alert('You picked ' + yourNumber +'!');
}

//use your function
max(5, 20);
john larson
john larson
16,594 Points
john larson
john larson
16,594 Points

lavaughn, I see you used "do and while?"... I gather that is beyond my; if, else and else if. But thank you again for the example.

LaVaughn Haynes
LaVaughn Haynes
12,397 Points
LaVaughn Haynes
LaVaughn Haynes
12,397 Points

Yeah, I wanted to avoid the if/then/else since I think that you said that you wanted to work that whole thing out for yourself, but it's similar to a while loop that is reversed.

The difference is that the while loop does the test first and then the loop code. The do/while loop does the loop code first, and then the test.

The result is do/while is guaranteed to execute the loop code at least once while it's possible for the while loop to not run the code at all. You might run across these styles of loops when you get to loops but chances are you'll end up using a for loop more than anything which I wont spoil for you.

//both of these count to 10
//one just tests first and then logs, the other logs first and then tests
var x = 1;
while(x <= 10){
    console.log(x);
    x = x+1;
}

var y = 1;
do{
    console.log(y);
    y = y+1;
}while(y<= 10);
L MOHAN ARUN
L MOHAN ARUN
769 Points
L MOHAN ARUN
L MOHAN ARUN
769 Points

Heres one way it does indeed accept two arguments: function max(low, high) { var input = prompt("Enter any number you thought of:"); if (input >= low && input <=high) alert("whatever your input was, it was high enough"); if (input <low || input >high) alert("you are not in range!"); }

Heres second way it does indeed accept two arguments: function max(low,high) { var input=prompt("Enter any number you can think of:"); if (input>low && input<low) { alert("whatever your input was, it was high enough"); } else if (input==high) { alert("hit!"); } else alert("you are not in range!"); }

Heres third way it does indeed accept three arguments: function max(low, high) { alert("Don't think of any number:"); alert("whatever your input was, it was high enough"); }

max(2,9); //output: whatever your input was, it was high enough max(3,9); //output: whatever your input was, it was high enough max(0,1); //only the third max function definition will output //output: whatever your input was, it was high enough max(0,9); //output: whatever your input was, it was high enough var whatishigh=9; is the same as var whatishigh(max(-9,9));