我是初学者编码员，希望能够加快我的Google表格查询速度。我环顾四周，无法找到解决方案。我正在尝试快速向Google表单运行25个查询，这就是我正在尝试的方式：
问题是如果我逐个运行quires，他们需要25秒才能完成。如果我在for循环中运行quires，结果会在2秒内返回，但是异步，并且数据全部都没有了。也许，我应该使用承诺或其他东西。请帮忙。
以下是慢速版本的代码：
Time.now以下是以异步方式返回结果的快速版本：
var resultData;
var allData = [];
var i = 0;
function startQuery() {
i = 0;
allData.length = 0;
runOnecode();
}
function runOnecode() {
var str = "";
str += $(".google-visualization-controls-rangefilter-thumblabel").text();
var until = str.substring(10);
var from = str.substring(0,10);
var center = $("#centerSelect option:selected").text();
var query = [
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND G =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND H =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND I =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND J =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND K =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND N =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND O =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND P =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND Q =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND R =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND S =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND T =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND U =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND V =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND W =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND X =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND Y =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND Z =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AA =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AB =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AC =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AD =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AE =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AF =\"No\" "),
("SELECT COUNT(A) WHERE C =\"" + center + "\" AND todate(A) >=date \'" + from + "\' AND todate(A) <=date \'" + until + "\' AND AG =\"No\" ")
];
getData(query[i]);
}
</script>
<script>
function getData(incomingQuery) {
// Prepare the query
var queryString = encodeURIComponent(incomingQuery);
var query = new google.visualization.Query(
//Collect the data from this spreadsheet
'MySpreadSheet URL' + queryString);
query.send(handleSampleDataQueryResponse);
//Handle any errors from the Google server
function handleSampleDataQueryResponse(response) {
if (response.isError()) {
alert('Error in query: ' + response.getMessage() + ' ' +
response.getDetailedMessage());
return;
}
// get look into the resulting data and find the detail.
var datas = response.getDataTable();
if (datas.Gf.length === 0) {
resultData = 0;
} else resultData = datas.Gf[0].c[0].v;
allData.push(resultData);
// console.log(allData);
if (i < 25) {
runOnecode();
} else {
drawTable();
}
i++;
}
}
</script>
答案 0 :(得分：2)
使用promises，你可以这样做
function runOnecode() {
var str = "";
str += $(".google-visualization-controls-rangefilter-thumblabel").text();
var until = str.substring(10);
var from = str.substring(0,10);
var center = $("#centerSelect option:selected").text();
var query = [
// your query data, removed for brevity ...
];
Promise.all(query.map(getData))
.then(function(results) {
// results is an array of results in the same order as query
})
.catch(function(err) {
// err is FIRST error - no other information about success/faill of other queries will be available
});
}
function getData(incomingQuery) {
return new Promise(function(fulfill, reject) {
// Prepare the query
var queryString = encodeURIComponent(incomingQuery);
var query = new google.visualization.Query(
//Collect the data from this spreadsheet
'MySpreadSheet URL' + queryString);
query.send(handleSampleDataQueryResponse);
//Handle any errors from the Google server
function handleSampleDataQueryResponse(response) {
if (response.isError()) {
throw('Error in query: ' + response.getMessage() + ' ' + response.getDetailedMessage());
}
// get look into the resulting data and find the detail.
var datas = response.getDataTable();
console.log(datas);
if (datas.Gf.length === 0) {
resultData = 0;
} else {
resultData = datas.Gf[0].c[0].v;
}
fulfill(resultData);
}
});
}
如果你需要获得所有查询成功/失败的状态，你可以使用像Q promises这样的东西，它有一个allSettled方法（而不是Promise.all），它返回所有promises的结果，无论成功/失败< / p>
或者，这是我自己推出的一个
Promise.allSettled = function(arr) {
return Promise.all([].map.call(arr,
function(v) {
return Promise.resolve(v).then(
function fulfilled (x) { return {fulfilled: true, value: x}; },
function rejected (e) { return {fulfilled: false, value: e}; }
);
})
);
};
runOnecode看起来像
function runOnecode() {
var str = "";
str += $(".google-visualization-controls-rangefilter-thumblabel").text();
var until = str.substring(10);
var from = str.substring(0,10);
var center = $("#centerSelect option:selected").text();
var query = [
// your query data, removed for brevity ...
];
Promise.allSettled(query.map(getData))
.then(function(results) {
// results is an array of results in the same order as query
results.forEach(function(result) {
if (result.fulfilled) {
// successful
console.log(result.value);
}
else {
// unsuccessful
console.log(result.value); // will show the thrown error
}
});
});
}