Js如何防止页面后退（使浏览器后退按钮失效）[通俗易懂]

<script type="text/javascript">
	$(function(){
        //防止页面后退
        history.pushState(null, null, "localhost:8080");
        window.addEventListener('popstate', function () {
            history.pushState(null, null, "localhost:8080");
        });
	})
</script>