webusb api例子浏览器js操作usb设备-html代码-BFW代码库

代码语言：html
所属分类：其他
代码描述：webusb api例子浏览器js操作usb设备，webusb还处理实验阶段，可以抢先体验下
下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">

    <style>

:root {
        --dust: #F1F1F2;
        --silver: #C2C2C2;
        --cobalt: #445780;
        --kelly-1: #67C28D;
        --kelly-2: #41A46B;
    }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            background-color: var(--dust);
            box-sizing: border-box;
            font-family: 'Inter', 'helvetica neue', arial, sans-serif;
            height: 100%;
            margin: 0;
            padding: 0;
            position: relative;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
            width: 100%;
        }

        main {
            display: -webkit-box;
            display: flex;
            -webkit-box-orient: vertical;
            -webkit-box-direction: normal;
            flex-flow: column wrap;
            -webkit-box-pack: stretch;
            justify-content: stretch;
            -webkit-box-align: center;
            align-items: center;
            min-height: 100vh;
            width: 100%;
        }

        #instructions {
            padding: 2em;
            width: 100%;
        }
        #instructions h1 {
            margin: 0 0 .75em;
            font-size: 1.25em;
        }
        #instructions p {
            margin: 0 0 1em;
            font-size: .75em;
        }
        #instructions button {
            background-color: white;
            border: solid 1px var(--cobalt);
            border-radius: .25em;
            color: var(--cobalt);
            display: inline-block;
            font-size: 1em;
            margin: .5em .5em .65em;
            padding: .15em .35em;
            text-transform: uppercase;
        }

        section {
            box-sizing: border-box;
            width: 100%;
            display: -webkit-box;
            display: flex;
            -webkit-box-orient: horizontal;
            -webkit-box-direction: normal;
            flex-flow: row wrap;
            -webkit-box-pack: stretch;
            justify-content: stretch;
            -webkit-box-align: stretch;
            align-items: stretch;
            -webkit-box-flex: 1;
            flex: 1 1 auto;
        }

        .usb-status {
            width: 100%;
            -webkit-box-flex: 1;
            flex: 1 1 auto;
            display: -webkit-box;
            display: flex;
            -webkit-box-orient: vertical;
            -webkit-box-direction: normal;
            flex-flow: column wrap;
            -webkit-box-pack: center;
            justify-content: center;
            -webkit-box-align: center;
            align-items: center;
        }

        .usb-status--text {
            margin: 1em auto 0em;
            display: block;
            font-size: 1em;
            font-weight: 600;
            color: var(--cobalt);
            -webkit-box-ordinal-group: 3;
            order: 2;
            text-align: center;
            text-transform: uppercase;
        }

        .usb-status--icon {
            width: 10em;
            pointer-events: none;
            position: relative;
        }
        .usb-status--icon::before, .usb-status--icon::after {
            content: "";
            display: block;
            position: absolute;
            z-index: 1;
        }
        .usb-status--icon::before {
            background: var(--dust);
            border-bottom: solid 3px var(--cobalt);
            height: 3em;
            top: 0;
            -webkit-transform: translateY(-100%);
            transform: translateY(-100%);
            width: 100%;
        }
        .usb-status--icon::after {
            background: var(--silver);
            border-radius: 50%;
            height: 1em;
            right: 10%;
            top: -1.5em;
            width: 1em;
        }

        .usb-status--cover {
            -webkit-transform-origin: 48px 62px;
            transform-origin: 48px 62px;
        }

        /* if animation is not preferred */
@media (prefers-reduced-motion: reduce) {
            /* disconnected styling */
            .usb-status--disconnected .usb-status--usb {
                -webkit-transform: translateY(0);
                transform: translateY(0);
            }

            .usb-status--disconnected .usb-status--cover {
                -webkit-transform: rotate(0turn);
                transform: rotate(0turn);
            }

            /* connected styling */
            .usb-status--connected .usb-status--text {
                /*color: var(--kelly-2);*/
            }

            .usb-status--connected .usb-status--icon::after {
                background: var(--kelly-1);
            }

            .usb-status--connected .usb-status--usb {
                -webkit-transform: translateY(-27px);
                transform: translateY(-27px);
            }

            .usb-status--connected .usb-status--cover {
                -webkit-transform: rotate(0.5turn);
                transform: rotate(0.5turn);
            }
        }
        /* if animation is allowed */
@media (prefers-reduced-motion: no-preference) {
            /* disconnected styling */
            .usb-status--disconnected .usb-status--text.text-in-out {
                -webkit-animation: text-in-out 0.8s ease both, text-color-disconnect 0.4s ease both 0.4s;
                animation: text-in-out 0.8s ease both, text-color-disconnect 0.4s ease both 0.4s;
            }
@-webkit-keyframes text-in-out {
                0% {
                    opacity: 1;
                }
                40% {
                    opacity: 0;
                }
                60% {
                    opacity: 0;
                }
                100% {
                    opacity: 1;
                }
            }
@keyframes text-in-out {
                0% {
                    opacity: 1;
                }
                40% {
                    opacity: 0;
                }
                60% {
                    opacity: 0;
                }
                100% {
                    opacity: 1;
                }
            }
@-webkit-keyframes text-color-disconnect {
                100% {
                    color: var(--cobalt);
                }
            }
@keyframes text-color-disconnect {
                100% {
                    color: var(--cobalt);
                }
            }
            .usb-status--disconnected .usb-status--icon::after {
                -webkit-transition: background .4s ease;
                transition: background .4s ease;
                -webkit-transition-delay: .2s;
                transition-delay: .2s;
            }

            .usb-status--disconnected .usb-status--usb {
                -webkit-animation: usb-disconnect .65s both;
                animation: usb-disconnect .65s both;
            }
@-webkit-keyframes usb-disconnect {
                0% {
                    -webkit-transform: translateY(-27px);
                    transform: translateY(-27px);
                    -webkit-transition-timing-function: ease-out;
                    transition-timing-function: ease-out;
                }
                60% {
                    -webkit-transform: translateY(5px);
                    transform: translateY(5px);
                    -webkit-transition-timing-function: ease-in-out;
                    transition-timing-function: ease-in-out;
                }
                100% {
                    -webkit-transform: translateY(0);
                    transform: translateY(0);
                }
            }
@keyframes usb-disconnect {
                0% {
                    -webkit-transform: translateY(-27px);
                    transform: translateY(-27px);
                    -webkit-transition-timing-function: ease-out;
                    transition-timing-function: ease-out;
                }
                60% {
                    -webkit-transform: translateY(5px);
                    transform: translateY(5px);
                    -webkit-transition-timing-function: ease-in-out;
                    transition-timing-function: ease-in-out;
                }
                100% {
                    -webkit-transform: translateY(0);
                    transform: translateY(0);
                }
            }
            .usb-status--disconnected .usb-status--cover {
                -webkit-animation: usb-cover-disconnect 0.6s cubic-bezier(0.47, 0.14, 0.21, 1) both 0.4s;
                animation: usb-cover-disconnect 0.6s cubic-bezier(0.47, 0.14, 0.21, 1) both 0.4s;
            }
@-webkit-keyframes usb-cover-disconnect {
                0% {
                    -webkit-transform: rotate(0.5turn);
                    transform: rotate(0.5turn);
                }
                100% {
                    -webkit-transform: rotate(0turn);
                    transform: rotate(0turn);
                }
            }
@keyframes usb-cover-disconnect {
                0% {
                    -webkit-transform: rotate(0.5turn);
                    transform: rotate(0.5turn);
                }
                100% {
                    -webkit-transform: rotate(0turn);
                    transform: rotate(0turn);
                }
            }
            /* connected styling */
            .usb-status--connected .usb-status--text.text-in-out {
                -webkit-animation: text-in-out 0.8s ease both, text-color-connect 0.4s ease both 0.4s;
                animation: text-in-out 0.8s ease both, text-color-connect 0.4s ease both 0.4s;
            }
@keyframes text-in-out {
                0% {
                    opacity: 1;
                }
                40% {
                    opacity: 0;
                }
                60% {
                    opacity: 0;
                }
                100% {
                    opacity: 1;
                }
            }
@-webkit-keyframes text-color-connect {
                100% {
                    color: var(--kelly-2);
                }
            }
@keyframes text-color-connect {
                100% {
                    color: var(--kelly-2);
                }
            }
            .usb-status--connected .usb-status--icon::after {
                background: var(--kelly-1);
                -webkit-transition: background .4s ease;
                transi.........完整代码请登录后点击上方下载按钮下载查看