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[英]How to get notified when $.getJSON that calls $.getJSON all is all done
[英]how to pass object array to another function ONLY when all getjson calls completed?
我必须进行几次getjson调用,才能从Google电子表格中获取一些数据,并将我需要的数据存储到数组中,并对数组进行过滤并显示数据。 在我的第一个getjson完成之前,我当前的代码需要一段时间来处理大量数据,因此我最终在数组中得到不完整的数据!
有没有办法让我的最后一个getjson仅在将数组传递给另一个函数之前完成所有先前的getjson调用(包括自身)时才将数组发送给另一个函数?
<script>
var files = new Array();
function pushtoArray(){
//first getjson call
var url1 = "https://spreadsheets.google.com/feeds/list/xxxxx/xxxxx/public/values?alt=json";
$.getJSON(url1, function(data) {
var entry = data.feed.entry;
$(entry).each(function(){
// Column names are name, age, etc.
count++;
files.push({ url: this.gsx$url.$t, filename: this.gsx$name.$t });
});
alert(files.length);
print_r(files);
console.log(files);
});//end of ajax call
//second getjson call
var url2 = "https://spreadsheets.google.com/feeds/list/xxxxx/xxxxx/public/values?alt=json";
$.getJSON(url2, function(data) {
var entry = data.feed.entry;
$(entry).each(function(){
// Column names are name, age, etc.
count++;
files.push({ url: this.gsx$url.$t, filename: this.gsx$name.$t });
});
alert(files.length);
passArray(files);
console.log(files);
});//end of ajax call
};//end of function
function passArray(files){
alert(files.length);
console.log(files);
// do some data filtering from array passed
</javascript>
<body onload="pushtoArray()">
编辑:我改变了
var entry1 = resultFromUrl1.feed.entry;
var entry2 = resultFromUrl2.feed.entry;
至
var entry1 = resultFromUrl1[0].feed.entry;
var entry2 = resultFromUrl2[0].feed.entry;
它修复了错误!
使用承诺。
var promiseA = $.getJSON(urla..);
var promiseB = $.getJSON(urlb..);
$.when(promiseA, promiseB).then(function(resultA,resultB){
//do whatever you want with results.
});
编辑:这是您的代码已编辑,也许与var entry = ...
的问题,如果是的话,只需在调试中查看entry1和entry2:
var files = new Array();
function pushtoArray() {
//first getjson call
var url1 = "https://spreadsheets.google.com/feeds/list/xxxxx/xxxxx/public/values?alt=json";
var url1Promise = $.getJSON(url1, function (data) {
console.log("url1 success");
});//end of ajax call
//second getjson call
var url2 = "https://spreadsheets.google.com/feeds/list/xxxxx/xxxxx/public/values?alt=json";
var url2Promise = $.getJSON(url2, function (data) {
console.log("url2 success");
});//end of function
$.when(url1Promise, url2Promise).then(function (resultFromUrl1, resultFromUrl2) {
var entry1 = resultFromUrl1.feed.entry;
var entry2 = resultFromUrl2.feed.entry;
var entry = entry1.concat(entry2);
$(entry).each(function () {
// Column names are name, age, etc.
count++;
files.push({ url: this.gsx$url.$t, filename: this.gsx$name.$t });
alert(files.length);
print_r(files);
console.log(files);
});
});
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