function getItemWidth(){
var slide_wi = 976;
var window_width = $(window).width();
if(window_width < 350){
slide_wi = 300;
}else if(window_width <= 568){
slide_wi = 458;
}else if(window_width <= 800){
slide_wi = 746;
}else if(window_width >= 1152){
slide_wi = 976;
}
return slide_wi;
} ;
这种尺寸的问题不能解决 ex 更换媒体的问题。iphone landsace 和 potratie