当运行下面的代码时,我得到一个" Uncaught TypeError:undefined不是函数"在" back.ajax({"。我已经浏览了jQuery文档,这似乎应该可以解决这个问题。还验证了jQuery是否包含在内并且浏览器识别&# 34; $&#34 ;.定义CURRYEAR并且所有引用的元素都存在。如果我使用相同的代码作为.load()的回调,那么它执行正常,但我需要同步执行,因为while循环只执行一次如果异步调用。
代码:
function loadWL() {
var back = $("#back-results");
var numYears;
var year;
var count = 0;
var wArr = [];
var lArr = [];
var dArr = [];
do {
year = CURRYEAR - count;
var standingsURL = STANDINGS.replace(" ", localStorage["leagueID"]);
standingsURL = standingsURL.replace(",", year);
var yqlStand = 'https://query.yahooapis.com/v1/public/yql?q=' + encodeURIComponent('select * from html where url="' + standingsURL + '"') + " #maincontainertblcell";
//Load into the hidden pane
var id;
var self = this;
back.html("");
back.ajax({
url: yqlStand,
async: false
}).done(function() {
//Parse the number of years the league has been active
if (count == 0) {
numYears = $("select > option").length;
}
//Narrow to only the elements we need
$(self).html($("#back-results tr .tableBody"));
//Now traverse the back pane and store info
$("#back-results > .tableBody a").closest("tr").each(function(index) {
id = urlToID($(this).find("a").attr('href'));
if (typeof wArr[id] == 'undefined') {
wArr[id] = 0;
lArr[id] = 0;
dArr[id] = 0;
}
wArr[id] = wArr[id] + parseInt($(':nth-child(2)', this).text().trim(),10);
lArr[id] = lArr[id] + parseInt($(':nth-child(3)', this).text().trim(), 10);
dArr[id] = dArr[id] + parseInt($(':nth-child(4)', this).text().trim(), 10);
if (count == numYears-1) {
arrayToLocal(wArr, "wins");
arrayToLocal(lArr, "losses");
arrayToLocal(dArr, "draws");
}
});
count++;
return;
});
} while (count < numYears);
}
答案 0 :(得分:2)
back.ajax({...})
应为$.ajax({...})
。
ajax调用是全局的,它不依赖于任何特定对象,所以你不要在jQuery对象上调用它,你可以在jQuery命名空间对象上调用它。
此外,您确实应该修复您的ajax以使用async: true
,以便在ajax调用期间不会锁定浏览器。这需要将while循环更改为可以对异步ajax调用进行排序的不同类型的结构。