function getName() {
    name = 'javascript'
}
getName()

	

const elements = {
    button: document.getElementById('button')
};
function removeButton() {
    document.body.removeChild(elements.button);
}
removeButton()

 

let timer = setInterval(() => {
    const node = document.querySelector('#node')  
    if(node) {
        clearInterval(timer)
    }
}, 1000);