--- id: 645b65b681a62f5fa125ff62 title: Step 30 challengeType: 0 dashedName: step-30 --- # --description-- Use `.push()` to append the `quotient` variable to the `quotients` array. Also, append the `remainder` variable to the `remainders` array. # --hints-- You should use the `.push()` method on the `quotients` array within your `while` loop. ```js assert.match(code, /while\s*\(\s*input\s*>\s*0\s*\)\s*\{[\s\S]*quotients\.push\(/); ``` You should use the `.push()` method to append `quotient` to the `quotients` array. ```js assert.match(String(decimalToBinary), /quotients\.push\(\s*quotient\s*\)\s*;?/); ``` You should use the `.push()` method on the `remainders` array within your `while` loop. ```js assert.match(code, /while\s*\(\s*input\s*>\s*0\s*\)\s*\{[\s\S]*remainders\.push\(/); ``` You should use the `.push()` method to append `remainder` to the `remainders` array. ```js assert.match(String(decimalToBinary), /remainders\.push\(\s*remainder\s*\)\s*;?/); ``` # --seed-- ## --seed-contents-- ```html Decimal to Binary Converter

Decimal to Binary Converter

``` ```css *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; } :root { --light-grey: #f5f6f7; --dark-blue: #1b1b32; --orange: #f1be32; } body { background-color: var(--dark-blue); font-family: "Times New Roman", Times, serif; font-size: 18px; color: var(--light-grey); padding: 0 15px; display: flex; flex-direction: column; align-items: center; } h1 { text-align: center; font-size: 2.3rem; margin: 20px 0; } .input-container { margin: 10px 0; display: flex; flex-direction: column; gap: 10px; justify-content: center; align-items: center; } .convert-btn { background-color: var(--orange); cursor: pointer; border: none; padding: 4px; } .number-input { height: 25px; } #result { margin: 10px 0; min-width: 200px; width: fit-content; min-height: 80px; word-break: break-word; padding: 15px; border: 5px solid var(--orange); font-size: 2rem; text-align: center; } #animation-container { margin: auto; max-width: 300px; } .animation-frame { margin: 250px auto 0; padding: 15px 10px; border: 5px solid var(--orange); font-size: 1.2rem; text-align: center; } @media screen and (min-width: 500px) { .input-container { flex-direction: row; } #result { max-width: 460px; } } ``` ```js const numberInput = document.getElementById("number-input"); const convertBtn = document.getElementById("convert-btn"); const result = document.getElementById("result"); const decimalToBinary = (input) => { const inputs = []; const quotients = []; const remainders = []; while (input > 0) { const quotient = Math.floor(input / 2); const remainder = input % 2; --fcc-editable-region-- inputs.push(input); --fcc-editable-region-- input = quotient; } }; const checkUserInput = () => { if ( !numberInput.value || isNaN(parseInt(numberInput.value)) || parseInt(numberInput.value) < 0 ) { alert("Please provide a decimal number greater than or equal to 0"); return; } decimalToBinary(parseInt(numberInput.value)); numberInput.value = ""; }; convertBtn.addEventListener("click", checkUserInput); numberInput.addEventListener("keydown", (e) => { if (e.key === "Enter") { checkUserInput(); } }); ```