好的，所以我试图制作一个程序，通过一个分包商及其数据列表，然后制作一个填充了附近的分包商的新表。
我遇到的问题是，当为转包商提供的位置与作业位置相同时，会返回错误。 Sprecifically：＆＃39; TypeError：无法设置属性＆＃34; 0.0＆＃34;未定义到＆＃34;＆＃34;。＆＃39;在脚本编辑器的执行脚本中，我在代码失败之前就收到了这个错误。
[14-07-11 12:20:29:418 EDT] Maps.newDirectionFinder() [0 seconds]
[14-07-11 12:20:29:418 EDT] DirectionFinder.setOrigin([Louisville, KY]) [0 seconds]
[14-07-11 12:20:29:419 EDT] DirectionFinder.setDestination([3515 Newburg rd, Louisville, KY]) [0 seconds]
[14-07-11 12:20:29:476 EDT] DirectionFinder.getDirections() [0.057 seconds]
[14-07-11 12:20:30:043 EDT] Execution failed: TypeError: Cannot set property "0.0" of undefined to "". (line 99, file "Code") [6.364 seconds total runtime]
在这种情况下，有什么方法可以让我处理这个错误并让它通过吗？我尝试制作一个dist变量，然后如果返回的距离未定义则将其设置为0，但我仍然收到此错误。
我的程序的完整代码如下。
/**
* A shared helper function used to obtain the full set of directions
* information between two addresses. Uses the Apps Script Maps Service.
*
* @param {String} origin The starting address.
* @param {String} destination The ending address.
* @return {Object} The directions response object.
*/
function getDirections_(origin, destination) {
var directionFinder = Maps.newDirectionFinder();
directionFinder.setOrigin(origin);
directionFinder.setDestination(destination);
var directions = directionFinder.getDirections();
if (typeof directions.routes[0] != 'undefined'){
var dist = directions.routes[0].legs[0].distance.value
}
if (dist == 0 && origin == ', ') {
dist = 100000;
}
return directions;
}
/**
* A special function that runs when the spreadsheet is open, used to add a
* custom menu to the spreadsheet.
*/
function onOpen() {
var spreadsheet = SpreadsheetApp.getActive();
var menuItems = [
{name: 'Find Local Subs', functionName: 'getSubInfo'}
];
spreadsheet.addMenu('Subcontractors', menuItems);
}
/**
* A custom function that converts meters to miles.
*
* @param {Number} meters The distance in meters.
* @return {Number} The distance in miles.
*/
function metersToMiles(meters) {
if (typeof meters != 'number') {
return null;
}
return meters / 1000 * 0.621371;
}
/**
* A custom function that gets the driving distance between two addresses.
*
* @param {String} origin The starting address.
* @param {String} destination The ending address.
* @return {Number} The distance in meters.
*/
function drivingDistance(origin, destination) {
var directions = getDirections_(origin, destination);
return directions.routes[0].legs[0].distance.value;
}
function drivingDistanceMiles(origin,destination){
var distMeters = drivingDistance(origin,destination);
return metersToMiles(distMeters);
}
//start the program and ask for location
function getSubInfo(){
var job = Browser.inputBox('Job',
'Please enter the job name' +
' (for example, "Hamilton WWTP"):',
Browser.Buttons.OK_CANCEL);
if (job == 'cancel') {
return;
}
var jobLocation = Browser.inputBox('Job Site Location',
'Please enter the address of the job site as accurately as possible' +
' (for example, "2 Rosewood dr, Wilder, Kentucky"):',
Browser.Buttons.OK_CANCEL);
if (jobLocation == 'cancel') {
return;
}
var maxDistance = Browser.inputBox('Max Distance',
'Please enter a maximum allowable distance from a job site that a sub can be' +
'(for example, "50")',
Browser.Buttons.OK_CANCEL);
if(maxDistance == 'cancel'){
return
}
findSubs(job,jobLocation,maxDistance);
}
function findSubs(job,jobLocation,maxDistance){
var data = SpreadsheetApp.getActiveSheet().getDataRange().getValues();
var filteredData = new Array;
var numFiltered = 0;
for (row = 0, len = SpreadsheetApp.getActiveSheet().getLastRow(); row < len; row++) {
var subLocation = data[row][26] + ", " + data[row][27];
if (drivingDistanceMiles(subLocation,jobLocation) < maxDistance){
for(currentCol = 0; currentCol < 32; currentCol++){
filteredData[numFiltered][currentCol] = data[row][currentCol];
}
numFiltered++;
}
}
buildSubSheet(job,jobLocation,filteredData,numFiltered);
}
function buildSubSheet(job,jobLocation,filteredData,numFiltered){
var ss = SpreadsheetApp.getActive();
var infoSheet = spreadsheet.getSheetByName('2012');
infoSheet.activate();
var sheetName = job + " Subs";
var subsSheet = spreadsheet.getSheetByName(sheetName);
if (directionsSheet) {
directionsSheet.clear();
directionsSheet.activate();
} else {
directionsSheet =
spreadsheet.insertSheet(sheetName, spreadsheet.getNumSheets());
}
var sheetTitle = "Subcontractors for " + job;
// var headers = [
// [sheetTitle, '', ''],
// ['Step', 'Distance (Meters)', 'Distance (Miles)']
// ];
subsSheet.activate();
range = subSheet.getRange(2,1,numFiltered,33);
range.setValues(filteredData);
}
谢谢， 射线
答案 0 :(得分：0)
查看第99行，报告错误：
filteredData[numFiltered][currentCol] = data[row][currentCol];
您正在为数组数组（也称为二维数组）分配值。在第93行，您定义了：
var filteredData = new Array;
所以你有一个阵列可以开始，很好。但是，在为子阵列分配值之前，需要首先以某种方式定义IT。一种方法是在你的循环中 - 但是由于你要按currentCol索引，你应该在currentCol增加的范围内进行索引。类似的东西：
for (row = 0, len = SpreadsheetApp.getActiveSheet().getLastRow(); row < len; row++) {
var subLocation = data[row][26] + ", " + data[row][27];
if (drivingDistanceMiles(subLocation,jobLocation) < maxDistance){
filteredData[numFiltered] = new Array;
...
这将消除你得到的错误。
我尝试制作一个dist变量，然后将其设置为等于0 距离返回undefined ...
由于这个bug在别处，你可能不需要担心这个。但即便如此，我希望你不介意一些观察。
if (typeof directions.routes[0] != 'undefined'){
您正在检查未定义（可以检查if (directions.length == 0)，这更符合逻辑），但是您实际上并未设置dist = 0，因此{}可能会{{1} }将在第二个dist语句中未定义。由于if和undefined不相等，因此会评估0。没有错误，但它可能没有做你认为应该做的事情。
最好先设置默认值，然后让计算继续进行：
false如果有路线，则语句 var dist = 0; // set the default value first
if (typeof directions.routes[0] != 'undefined'){
dist = directions.routes[0].legs[0].distance.value // no 'var' here
}
将更改dist = 100000;，这将获得directions.routes[0].legs[0].distance.value。这是有道理的，因为你试图取消承包商将工地作为他们的地址的情况。但是，如果没有路线），设置return无论如何都不会对返回的dist = 0产生任何影响。相反，您可以嵌套决策，而不必担心它们之外的directions。
dist = 0