Answers for "alert('hello world')"

hello world javascript

// Output Hello World! in the console.
console.log("Hello World!");

print hello world in javascript

console.log("Hello, World!");

console.error("Error, World!"); // For errors

console.warn("Warning, World!"); // For warnings

console.clear(); // To clear the console

alert('hello);

<script>
    alert("Hello");
</script>