适配屏幕文字大小

直接上代码:

<script>

    fnResize();

    window.onresize = function () {

        fnResize();

        window.addEventListener("resize", fnResize);

    };

    function fnResize() {

        let devWidth = document.documentElement.clientWidth || window.innerWidth;//浏览器视口宽度

        let equipment = (navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i))

        console.log(devWidth, equipment)

        if (equipment) {

            if (devWidth >= 750) {

                devWidth = 750;

            }

            if (devWidth <= 320) {

                devWidth = 320;

            }

            document.documentElement.style.fontSize = parseInt(devWidth / 23) + "px";

        } else {

            document.documentElement.style.fontSize = 16 + "px";

        }

    }

</script>