js代码

<script src="js/jquery-3.3.1.min.js"></script>
<script src="js/clipboard.min.js"></script>
<script src="js/ft.js"></script>
<script type="text/javascript">

(function(){
	var phoneWidth = parseInt(window.screen.width),
		phoneScale = phoneWidth/640,
		ua = navigator.userAgent;
	if (/Android (\d+\.\d+)/.test(ua)){
		var version = parseFloat(RegExp.$1);
		if(version > 2.3){
			//判断安卓
			document.write('<meta name="viewport" content="width=device-width, initial-scale=0.75, minimum-scale=0.75, maximum-scale=0.75, user-scalable=no">');
		}
	} else {
		//判断ios屏幕宽度
		document.write('<meta name="viewport" content="width=device-width, initial-scale=0.76, minimum-scale=0.76, maximum-scale=0.76, user-scalable=no">');
	}
})();

</script>