//点击了复制
    $("body").on("click",".copy_gift_num",function(){
        var index = $(".copy_gift_num").index(this);
        copy(index);
    });

function copy(index){
     　　if (navigator.userAgent.match(/(iPhone|iPod|iPad);?/i)) {//区分iPhone设备
            var text = document.getElementsByClassName(‘gift_num_span‘)[index];
            //获取隐藏的input，并写入text内容，在进行复制
            var input = document.getElementsByClassName(‘gift_num_input‘)[index];
            input.value = text.innerHTML;
            input.select();
            input.setSelectionRange(0, input.value.length);   //兼容ios
            document.execCommand("Copy");
            input.blur();
            toast("已复制");
        }else{
            var Url2=document.getElementsByClassName(‘gift_num_input‘)[index];//要复制文字的节点
            Url2.select(); // 选择对象
            if(document.execCommand(‘copy‘, false, null)){
            var successful = document.execCommand(‘copy‘);// 执行浏览器复制命令
                toast("已复制");
            }else{
                toast("复制失败");
            };
            $(".gift_num_input").eq(index).blur();
        }
}

function toast(msg){
        $("#toast_div").css("display","flex");
        $("#toast_div").show();
        $("#toast_msg").html(msg);
        $("#toast_div").fadeOut(1500);        
    }