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JavaScript Introducing the Practice

ricky ebanks
ricky ebanks
1,212 Points
Posted by ricky ebanks
ricky ebanks
1,212 Points

My solution to this practice

let first;
let second;

alert("lets do some math!");

first = prompt ("write a number");
second = prompt ("write another number");

first = parseFloat(first);
second = parseFloat(second);

if ( second === 0 ) {
  alert("The second number is 0. You can't divide by zero. Reload and try again.");
} else if ( isNaN(first) || isNaN(second) ) {
  alert("At least one of the values you typed is not a number. Reload and try again.");
} else {

message ="<h1>math with the numbers " + first + " and " + second + "</h1>";
message += first + " + " + second + " = " + (first + second); 
message += "<br>";
message += first + " * " + second + " = " + (first * second);
message += "<br>";
message += first + " / " + second + " = " + (first / second);
message += "<br>";
message += first + " - " + second + " = " + (first - second);
document.write(message);
}
James Reich
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
James Reich
Front End Web Development Techdegree Graduate 14,854 Points
James Reich
.a{fill-rule:evenodd;}techdegree seal-36
James Reich
Front End Web Development Techdegree Graduate 14,854 Points 
let first; let second;

alert("lets do some math!");

first = prompt ("write a number"); 
second = prompt ("write another number");

first = parseFloat(first);
second = parseFloat(second);

if ( second === 0 ) { 

alert("The second number is 0. You can't divide by zero. Reload and try again."); 

} else if ( isNaN(first) || isNaN(second) ) { 

alert("At least one of the values you typed is not a number. Reload and try again."); 

} else {

message ="<h1>math with the numbers " + first + " and " + second + "</h1>"; 
message += first + " + " + second + " = " + (first + second); 
message += "<br>"; 
message += first + " * " + second + " = " + (first * second); 
message += "<br>"; 
message += first + " / " + second + " = " + (first / second); 
message += "<br>"; 
message += first + " - " + second + " = " + (first - second); 

document.write(message); 
}

Looks good! Just letting you know, that you can surround your code with 3 backticks ``` at the beginning and end, and it will treat it as code and highlight it accordingly. You can also tell it what language you're using by putting the language right after the first set of backticks for proper syntax highlighting!