const checkButton = document.getElementById("check-btn");
const result = document.getElementById("result");
const textInput = document.getElementById("text-input");
function check() {
if (textInput.value == "") {
alert("Please input a value");
} else if (palindrome(textInput.value)) {
result.innerHTML = `${textInput.value} is a palindrome`
} else {result.innerHTML = `${textInput.value} is not a palindrome`}
}
function palindrome(str) {
const regex = /[^A-Za-z0-9]/g;
var firstRegexStr = str.toLowerCase().replace(regex, '');
var reverseStr = firstRegexStr.split('').reverse().join('');
return reverseStr === firstRegexStr;
}
checkButton.addEventListener("click", check);
Please put your question in the body of your post. Also, please include a link to the Step. Thanks
I’ve edited your code for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>
) to add backticks around text.
See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (').
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