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JavaScript JavaScript Loops, Arrays and Objects Tracking Multiple Items with Arrays Two-Dimensional Arrays

Posted by john larson
john larson
16,594 Points

testing with an || seems to break this code

adding the || test in the second example seems to break the code.

this one works fine

do{
    search = prompt("Enter an item, type: 'quit' to exit");

}while(search !== "");

this one keeps popping up the prompt even after entering quit or an empty string.

do{
    search = prompt("Enter an item, type: 'quit' to exit");
}while(search !== "quit" || search !== "");

2 Answers

Kieran Black
Kieran Black
9,139 Points

HI John,

You probably want to use AND && and not OR ||, as currently the while loop will continue while the content of the prompt is not quit OR prompt value is not blank.

So when you type quit, the loop continues as the response was not blank, and when you type nothing the loop continues as the response was not quit.

do{
    search = prompt("Enter an item, type: 'quit' to exit");
}while(search !== "quit" && search !== "");

Hope that helps.

KB :octopus:

john larson
john larson
16,594 Points
john larson
john larson
16,594 Points

That makes perfect sense...now that you said it. Thank you.