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JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Random Number Challenge, Part II Solution

Posted by fairest
.a{fill-rule:evenodd;}techdegree seal-36
fairest
Full Stack JavaScript Techdegree Graduate 19,303 Points

Any input on this on this alternative solution combining assignments?

var minValue = 0;
var minValue = 0;

// Function
function rollTheDice(minValue, maxValue) {
    return Math.floor(Math.random() * (maxValue - minValue + 1)) + minValue ; 
}

// Value prompt
minValue = parseInt( prompt('Please enter a minimum value') );
    while ( isNaN(minValue) ) { 
        minValue = parseInt( prompt('Sorry, numbers only. Please enter a minimum value') );
    } 

maxValue = parseInt( prompt('Please enter a maximum value') );
    if ( isNaN(maxValue) || maxValue <= minValue ) {
        while ( isNaN(maxValue) ) { 
            maxValue = parseInt( prompt('Sorry, numbers only. Please enter a maximum value') );
        }
        while ( maxValue <= minValue ) { 
            maxValue = parseInt( prompt('Plase enter a number higher than ' + minValue ) );
        }
    }

// Call Function
alert('The number is ' + rollTheDice(minValue, maxValue)) + '.';

// Play Again?
if (confirm('Play again?')) {
   location.reload();
}else {
   alert("Thank you for playing.")
}

2 Answers

Steven Parker
Steven Parker
229,708 Points
Steven Parker
Steven Parker
229,708 Points

By using two separate loops for testing value order and non-number, once the loop to test for the value order begins running, the input will no longer be checking if the input is not a number. To make sure both criteria are upheld, check them both in one loop:

maxValue = parseInt(prompt("Please enter a maximum value"));
while (isNaN(maxValue) || maxValue <= minValue) {
    if (isNaN(maxValue)) {
        maxValue = parseInt(prompt("Sorry, numbers only. Please enter a maximum value"));
    } else {
        maxValue = parseInt(prompt("Plase enter a number higher than " + minValue));
    }
}
fairest
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
fairest
Full Stack JavaScript Techdegree Graduate 19,303 Points
fairest
.a{fill-rule:evenodd;}techdegree seal-36
fairest
Full Stack JavaScript Techdegree Graduate 19,303 Points

Thanks!