function isInArray(arr,value) {
	for(var i = 0; i < arr.length; i++) {
		if(arr[i]){
			if(value.url == arr[i].url) {
				return i+1;
			}
		}
		
	}
	return false;
}
function fav(){
	var this_url=window.location.href;
	var this_name=document.querySelector("#title").innerHTML;
	//console.log(this_url+this_name);
        $.post(
            "/phpbook/shelfup2.php",
            {url:this_url,name:this_name},
            function(data){
				//console.log(data);
				var book_data=data;
				if(data.res=='ok'){
					bs = JSON.parse(localStorage.getItem("history") || "[]");
					if(bs.length>30){
						bs.length=30;
					}
					//bs=[];
					var isin = isInArray(bs,book_data);
					//console.log(isin);
					if(isin) {
						bs.splice((isin-1),1);
						bs.unshift(book_data);
						//window.location.href="/history.html"; 
					} else {
						bs.unshift(book_data);
					}
					localStorage.setItem("history", JSON.stringify(bs));
					//console.log(JSON.stringify(bs));
				}
            },
            "json"
        );
}
fav();