现在没办法绝对禁止用户缩放网页,但是可以增加一个有情提醒,比如当前网页缩放非100%,为了您的体验,请缩放至100%;
可以在用户进行缩放网页的时候进行提醒。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/jquery-3.2.1.min.js"></script>
<script type="text/javascript">
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;
};
$(document).keydown(function(event) {
if (event.ctrlKey==true && (event.which == '61' || event.which == '107' || event.which == '173' || event.which == '109' || event.which == '187' || event.which == '189' ) ) {
event.preventDefault();
var rate = detectZoom();
if(rate != 100){
console.log(rate)
alert("当前页面不是100%显示。为了您的体验,请缩放至100%,按ctrl+0键");
}
}
// 107 Num Key +
// 109 Num Key -
// 173 Min Key hyphen/underscore key
// 61 Plus key +/= key
});
$(window).bind('mousewheel DOMMouseScroll', function (event) {
if (event.ctrlKey == true) {
event.preventDefault();
var rate = detectZoom();
if(rate != 100){
console.log(rate)
alert("当前页面不是100%显示。为了您的体验,请缩放至100%,按ctrl+0键");
}
}
});
</script>
<style>
</style>
</head>
<body>
<div>
缩放试试
</div>
</body>
</html>
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