viewport
<meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=1.0,initial-scale=1.0,user-scalable=no">
navigator.userAgent
var viewWidth = $(window).width();
var viewHeight = $(window).height();
var desWidth = 640;
var touchstart = \'touchstart\';
var touchmove = \'touchmove\';
var touchend = \'touchend\';
function device(){ //兼容PC和移动端
//console.log( navigator.userAgent );
var isMobile = /Mobile/i.test(navigator.userAgent);
if(viewWidth > desWidth){
$main.css(\'width\',\'640px\');
}
if(!isMobile){
touchstart = \'mousedown\';
touchmove = \'mousemove\';
touchend = \'mouseup\';
}
$(window).resize(function(){
viewWidth = $(window).width();
viewHeight = $(window).height();
musicDetails.sildeDown();
});
}