www.lightcourse.com/public/static/home/new/js/ratio.js

69 lines
2.7 KiB
JavaScript
Raw Normal View History

2022-10-24 02:38:36 +00:00
var ratio = 0;
var screen = window.screen;
var ua = navigator.userAgent.toLowerCase();
var flag = true;
function getRatio() {
if (window.devicePixelRatio !== undefined) {
ratio = window.devicePixelRatio;
} else if (~ua.indexOf("msie")) {
if (screen.deviceXDPI && screen.logicalXDPI) {
//IE
ratio = screen.deviceXDPI / screen.logicalXDPI;
}
} else if (
window.outerWidth !== undefined &&
window.innerWidth !== undefined
) {
ratio = window.outerWidth / window.innerWidth;
}
if (ratio == 1) {
$(".ratio-suggest").remove();
} else if (ratio > 1) {
appendDom("放大", detectZoom());
} else {
appendDom("缩小", detectZoom());
}
}
getRatio();
function detectZoom() {
var ratio = 0,
screen = window.screen,
ua = navigator.userAgent.toLowerCase();
if (window.devicePixelRatio !== undefined) {
ratio = window.devicePixelRatio;
} else if (~ua.indexOf("msie")) {
if (screen.deviceXDPI && screen.logicalXDPI) {
ratio = screen.deviceXDPI / screen.logicalXDPI;
}
} else if (
window.outerWidth !== undefined &&
window.innerWidth !== undefined
) {
ratio = window.outerWidth / window.innerWidth;
}
if (ratio) {
ratio = Math.round(ratio * 100);
}
return ratio;
}
function appendDom(txt, num) {
if (flag) {
$(".ratio-suggest").remove();
$("body").append(`
<div class="ratio-suggest" style="position: fixed;top: 20%;right: 20px;z-index: 999;background-color: #ebf5fd;width: 340px;padding: 10px;padding-right: 30px; border-left: 4px solid #004f94;">
<span style="color: #000;font-size: 12px;line-height: 1.8;">您的浏览器目前处于<strong style="font-weight:bold;font-size:14px;color:#004f94">${txt}</strong>100%<strong style="font-weight:bold;font-size:14px;color:#004f94">${num}%</strong></span>
<div class="close" style="position: absolute;top: 10px;right: 10px; width: 14px;height: 14px;cursor: pointer;">
<svg t="1536830466687" class="icon leftPop-close" viewBox="0 0 1024 1024" version="1.1"><title>不再显示</title><path d="M512 438.378667L806.506667 143.893333a52.032 52.032 0 1 1 73.6 73.621334L585.621333 512l294.485334 294.485333a52.074667 52.074667 0 0 1-73.6 73.642667L512 585.621333 217.514667 880.128a52.053333 52.053333 0 1 1-73.621334-73.642667L438.378667 512 143.893333 217.514667a52.053333 52.053333 0 1 1 73.621334-73.621334L512 438.378667z" fill="" p-id="15859"></path></svg>
</div>
</div>
`);
}
}
window.onresize = function () {
getRatio();
};
$(".ratio-suggest").on("click", ".close", function () {
$(".ratio-suggest").remove();
flag = false;
});