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JavaScript The Solution

Gal Parselany
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Gal Parselany
Full Stack JavaScript Techdegree Graduate 26,281 Points
Posted by Gal Parselany
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Gal Parselany
Full Stack JavaScript Techdegree Graduate 26,281 Points

My Solution

var num1 = prompt("Please type a number");
var num2 = prompt("Please type another number");
var message = "<h1>Math with the numbers " + num1 + " and " + num2 + "</h1>";

num1 = parseFloat(num1);
num2 = parseFloat(num2);

if((Number.isFinite(num1) && Number.isFinite(num2)) && (num1 !==0 && num2 !== 0)) {
  alert("Let's do some math!");
message += 
 `
   ${num1} + ${num2} = ${num1 + num2} <br>
   ${num1} * ${num2} = ${num1 * num2} <br>
   ${num1} / ${num2} = ${num1 / num2} <br>
   ${num1} - ${num2} = ${num1 - num2} 
 `;
    document.write(message);
} else {
  alert('Please insert two numbers, and dont use 0');
}

does it right to use the document.write inside the if statement?

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

Code needs special formatting to look right in the forum. Take a look at these videos about Posting a Question, and this one on using Markdown formatting to preserve the code's appearance.

Click the little rectangle with the 3 dots to reveal the option to "Edit Question".

1 Answer

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

The document.write is inside the conditional in the video also, only there the test (if) was for a bad number, but in this code the test is for a good number. Both approaches are equally valid.