移动端H5页面ios不支持原生js的alert方法解决办法

1.cont:要d出的语言,millisecond:毫秒数

function Toast(cont,millisecond){

    millisecond=isNaN(millisecond)?3000:millisecond;

    var m = document.createElement('div');

    m.innerHTML = cont;

    m.style.cssText="max-width: 90%;min-width: fit-content;padding:0 0.28rem;color: rgb(255, 255, 255);line-height: 0.8rem;text-align: center;border-radius: 0.08rem;position: fixed;top: 50%;left: 50%;transform: translate(-50%, -50%);z-index: 999999;background: rgba(0, 0, 0,.7);font-size: 0.32rem;";

    document.body.appendChild(m);

    setTimeout(function() {

        var d = 0.5;

        m.style.webkitTransition = '-webkit-transform ' + d + 's ease-in, opacity ' + d + 's ease-in';

        m.style.opacity = '0';

        setTimeout(function() { document.body.removeChild(m) }, d * 1000);

    }, millisecond);

}