我将信息从数据库推送到日历，其中每个日期的id等于数据库中的id。代码遍历数据库搜索匹配对。如果找到匹配项，则将图像的名称放入日历中的图像标记中。但是，默认图像是唯一显示的图像，并且变量calImg似乎正在重置为默认值。 var idCalendar = [];
var arrayCalendar = -1;
var calImg;是全局变量
while (counter <= numOfDays) {
var dateID = counter + monthIDName;
idCalendar[counter - 1] = dateID;
//alert(idCalendar[counter-1]);
// When to start new line.
if (weekdays2 > 6) {
weekdays2 = 0;
htmlContent += "</tr><tr>";
}
//check to ensure the mydb object has been created
/////////////////////////////////////////////////////////////////////////////
if (mydb) {
//Get all the entry from the database with a select statement
mydb.transaction(function(t) {
t.executeSql("SELECT rating FROM entry WHERE calendar=?", [idCalendar[arrayCalendar + 1]], function(t, results) {
var i;
//Iterate through the results
if (results.rows.length != 0) {
for (i = 0; i < results.rows.length; i++) {
var row = results.rows.item(i);
calImg = row.rating;
alert(idCalendar[arrayCalendar] + calImg);
}
} else {
alert(idCalendar[arrayCalendar]);
calImg = 'default';
}
});
arrayCalendar++;
});
} else {
myApp.alert("query error");
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// if counter is current day.
// highlight current day using the CSS defined in header.
if (counter == day && month == curMonth && year == curYear) {
htmlContent += "<td class='dayNow' id='" + counter + monthIDName + "' onMouseOver='this.style.background=\"#FF0000\"; this.style.color=\"#FFFFFF\"' " + "onMouseOut='this.style.background=\"#FFFFFF\"; this.style.color=\"#FF0000\"'>" + counter + "<img src= 'img/" + calImg + ".png' align='left' height= '15' width= '15'>" + "<br>" + "</td>";
} else {
htmlContent += "<td class='monthNow' id='" + counter + monthIDName + "' onMouseOver='this.style.background=\"#FF0000\"'" + " onMouseOut='this.style.background=\"#FFFFFF\"'>" + counter + "<img src= 'img/" + calImg + ".png' align='left' height= '15' width= '15'>" + "<br>" + "</td>";
}
weekdays2++;
counter++;
}