$('a[href^="#"]').on('click',function (e) {
e.preventDefault();
var target = $(this.hash);
$('html, body').stop().animate({
'scrollTop': target.offset().top
}, 500);
});var el = document.getElementById('id');
if (typeof elem.textContent !== "undefined") {
el.textContent = 'text';
} else {
el.innerText = 'text';
}
el.innetHTML = '<p>text</p>'overflow: hidden