js禁止浏览器后退按钮[通俗易懂]

//禁止浏览器后退按钮
function BanBack(ele) {
    //禁止浏览器后退按钮
    if (window.history && window.history.pushState) {
        $(window).on('popstate', function () {
            window.history.pushState('forward', null, '#');
            window.history.forward(1);
            if (ele) {//特殊处理后退url地址
                window.location.href = ele;
            }
        });
    }
    window.history.pushState('forward', null, '#'); //在IE中必须得有这两行
    window.history.forward(1);
}