Snabb fråga om en uppgift i en bok.

var dog ={
name: "fido",
weight: 20.2,
age: 4,
breed: "mixed",
activity: "fetch balls"
};
var bark;
if (dog.weight > 20){
bark="WOOF WOOF";
} else{
bark = "woof woof";
}
var speak = dog.name + " says " + bark + " when he wants to " + dog.activity;
console.log(speak);

function parseGuess(guess) {   
    var alphabet = ["A", "B", "C", "D", "E", "F", "G"];
    if (guess === null || guess.length !== 2) {      
        alert("Oops, please enter a letter and a number on the board.");   
    } else {      
        firstChar = guess.charAt(0);      
        var row = alphabet.indexOf(firstChar);       
        var column = guess.charAt(1);        
        if (isNaN(row) || isNaN(column)) {         
            alert("Oops, that isn't on the board.");      
        } else if (row < 0 || row >= model.boardSize || column < 0 || column >= model.boardSize) {  //Om row är mindre än 0 eller större än eller lika med 5. Om column är mindre än 0 eller lika med eller större än 5 gör en alert.       
            alert("Oops, that's off the board!");      
        } else {         
            return row + column;      
        }   
    }   return null;
}

console.log(parseGuess("A0"));
console.log(parseGuess("B6"));
console.log(parseGuess("G3"));
console.log(parseGuess("H0"));
console.log(parseGuess("A7"));