Home

Welcome to the Javascript-different-use-of-OR- wiki!

_{This repository is part of a larger project!}

◀️ PREVIOUS PROJECT| NEXT PROJECT ▶️

---

It seems that the logical operator or(||) in JS has functionalities which could be used in an interesting way.

An example follows:

function myFunction(optional)
{
    
    var myDefaultValue = "I am the default";
    var which = optional || myDefaultValue;
    
    /*
        Explanation:
        Variable "which" will take the value "optional" if it is not false or
        else the value of "myDefaultValue"
    */
    console.log(which);
}

// All will output: "I am the default"
// This should mean that these are values which are converted as false
myFunction();       //undefined
myFunction(NaN);    //Not a number
myFunction(false);  //Bool
myFunction('');     //Empty string
myFunction("");     //Empty string
myFunction(null);   
myFunction(0);

// Outputs: "Hello World!"
myFunction("Hello World!");

Content

The user interaction part should look like the content as seen below by starting "index.html" in a web browser.

• One of radio 🅱️uttons "EVEN", "NONE" or "UNEVEN" would have to be selected to set a bet
• 🅱️ utton "START" should check if the bet was correct
• Beneath "START" the text "Result" would be changed after "START" is pressed
• If no bet is set then there should be poping up an error message

To use the project just download the files and execute "index.html". Note that all files(folder "wiki_images" excluded) should be placed in the same folder so that the functionality of the code is guaranteed.