Develop Reference

Javascript & Titanium - Can't read XML text nodes

My code is very simple: I'm trying to parse the following XML: https://www.chilkatsoft.com/xml-samples/bookstore.xml
But when I try to print data, I obtain an array of null (however the length is correct).
Any suggestions? Thanks in advance!
xhr.onload = function() {
var xml = this.responseXML;
//get the book nodelist from our response xml object
var items = xml.documentElement.getElementsByTagName("book");
//create empty data array
var data=[];
//loop each book in the xml
for (var i = 0; i < items.length; i++) {
//obtain the title
var str=items.item(i).getElementsByTagName("title").item(0).text;
//add the title to our data array
data.push(str);
}
console.log(data);
};

Solved:
var lng = endLocation.getElementsByTagName('lng').item(0).childNodes.item(0).nodeValue;
instead of:
var lng = endLocation.getElementsByTagName('lng').item(0).text;

error : "Cannot convert Array to Object" Data Scraping script

I'm new to Javascript and even newer to google script, so please be comprehensive :)
I'm trying to build a little script to scrap some data from a bunch of URL. I' using Parser library. Here is what I've:
function getArray() {
var newData = new Array();
var sheet = SpreadsheetApp.openById('my_id').getSheetByName('Sheet4');
var urls = sheet.getRange(1,1,5,5).getValues();
var fromText = '<span class="nb-shares">';
var toText = '</span>';
for(i in urls){
var url = urls[i];
var content = UrlFetchApp.fetch(url).getContentText();
var scraped = Parser
.data(content)
.from(fromText)
.to(toText)
.build();
newData.push(scraped);}
var sheet2 = SpreadsheetApp.openById('my_id').getSheetByName('Sheet5');
sheet2.getRange(5, 1, newData.length, newData[1].length).setValues(newData);
}
It return me the following error : Cannot convert Array to Object
What I'm trying to do is looping on an URLs array so I can scrap some data from each one of these URL and return the results in my sheet.

Try changing newData.push(scraped) to newData.push([scraped])

Javascript array which contains arrays

I have two Javascript arrays which have been populated by a forloop.
I now want to assign both of those arrays to a new array. However, the two arrays are being called within another function. So, I want to assign the function, containing the two arrays to a new array.
The idea is to use a while loop to populate the new array with the two existing arrays.
The difficulty is that the browser does not seem to like assigning an array to the google.maps function: eg: myarray[i] = (google.maps.LatLng(array1[i],array2[i]))
Here is the whole code... the actual bit that is going wrong is contained within the while loop toward the end of the code (the rest of it before the while loop works fine).
while($row = mysqli_fetch_array($marker_result)) {
$marker_location[] = $row["location"];
$marker_lat[] = $row["lat"];
$marker_lng[] = $row["lng"];
} //End of while loop
?>
<script>
//Converting php marker arrays to javascript marker arrays for use in for loop
var js_markerloc_array= <?php echo json_encode($marker_location ); ?>;
var js_markerlat_array= <?php echo json_encode($marker_lat ); ?>;
var js_markerlng_array= <?php echo json_encode($marker_lng ); ?>;
var markerloc_array = new Array(js_markerloc_array.length);
var markerlat_array = new Array(js_markerloc_array.length);
var markerlng_array = new Array(js_markerloc_array.length);
for(var i=0; i<js_markerloc_array.length; i++){
var jsloc = js_markerloc_array[i];
var jslat = js_markerlat_array[i];
var jslng = js_markerlng_array[i];
markerloc_array[i] = jsloc;
markerlat_array[i] = jslat;
markerlng_array[i] = jslng;
}
// Now need to write all of this below into an array so that it can populate markers from it! The difficulty is that the browser does not seem to like assigning the google.maps.LatLng(array1[i],array2[i]) to a new array
//var mapmarker_array = new Array(js_markerloc_array.length);
i = 0;
while (i < js_markerloc_array.length)
{
var mapmarker_array = new (google.maps.LatLng(markerlat_array[i], markerlng_array[i])); //Uses coordinates from database "markers" table
var test_marker1 = new google.maps.Marker({position:mapmarker1, title: markerloc_array[i]});
document.write(mapmarker1);
document.write(markerloc_array[i]);
i++;
}

I am Honestly not surprised this is not working.
Using new Array(x) can always behave unexpectedly.
It is much better to always use [] to create an array in Javascript. The top half of your script should be something like this:
<script>
var js_markerloc_array= JSON.parse('<?php echo json_encode($marker_location ); ?>');
var js_markerlat_array= JSON.parse('<?php echo json_encode($marker_lat ); ?>');
var js_markerlng_array= JSON.parse('<?php echo json_encode($marker_lng ); ?>');
var markerloc_array = [];
var markerlat_array = [];
var markerlng_array = [];
for (var i=0; len = js_markerloc_array.length; i < len; i++){
markerloc_array[i] = js_markerloc_array[i];
markerlat_array[i] = js_markerlat_array[i];
markerlng_array[i] = js_markerlng_array[i];
}
You also need to Parse the Json again on the javascript side once the script executes, it looks confusing but you need to wrap the php json_encode(x) in JSON.parse() which is Javascripts method for parsing json.
i = 0;
while (i < js_markerloc_array.length)
{
var mapmarker_array = new (google.maps.LatLng(markerlat_array[i], markerlng_array[i])); //Uses coordinates from database "markers" table
var test_marker1 = new google.maps.Marker({position:mapmarker1, title: markerloc_array[i]});
document.write(mapmarker1);
document.write(markerloc_array[i]);
i++;
}
</script>
I dont know what your are tying to refere to above with mapmarker1, so I cant help you with that, and havent ever used google.maps API before so I cant help any further, but I hope what I have said will help you!!

OK, it works! Here is the code:
while($row = mysqli_fetch_array($marker_result)) {
$marker_location[] = $row["location"];
$marker_lat[] = $row["lat"];
$marker_lng[] = $row["lng"];
} //End of while loop
?>
<script>
//Converting php marker arrays to javascript marker arrays for use in for loop
var js_markerloc_array= <?php echo json_encode($marker_location ); ?>;
var js_markerlat_array= <?php echo json_encode($marker_lat ); ?>;
var js_markerlng_array= <?php echo json_encode($marker_lng ); ?>;
var mapmarkers = [];
var testmarkers = [];
i = 0;
for (var i = 0; i < js_markerloc_array.length; i++) {
mapmarkers[i] = new google.maps.LatLng(js_markerlat_array[i], js_markerlng_array[i]);
testmarkers[i] = new google.maps.Marker({position: mapmarkers[i], title: js_markerloc_array[i]});
}
Then further down the page (after the google maps initialise function and options)...
i = 0;
for (var i = 0; i < js_markerloc_array.length; i++) {
testmarkers[i].setMap(map);
}
So, from top to bottom. While loop places database query results into 3 PHP arrays (one for location, one for latitude and one for longitude).
These are then converted to 3 corresponding JavaScript arrays.
Then 2 new JavaScript arrays are created which take their values from the other 3 arrays as shown in the forloop, the 3 arrays are included in googlemaps functions (which was the main thing causing problems before).
Note in this forloop that there is a mapmarkers array which specifies the lat and lng, then a testmarkers array which specifies the position given by the mapmarkers array AND allocates the location name.
It is then the testmarkers array which is called in the forloop further down the page.
This second forloop simply takes the testmarkers array which contains the lat,lng and location and uses the setMap google maps API function to place the marker on the map!
Hence users can now add their own markers to the database, and these can then be added automatically. Hope this helps someone, and thanks for the help and for pointing out my bloated code, constructive criticism very welcome. Thanks again.

copy contents of range object (Excel column) to an array via javascript

what I want to do is access an excel file, take the contents of a column and then store it in an array. I'm guessing this can be done by iterating through each element of the range object and copying it to an array. My current code is shown below:
function GetData(){
var excel = new ActiveXObject("Excel.Application");
var excel_file = excel.Workbooks.Open("C:\\Data.xls");
var excel_sheet = excel.Worksheets("Sheet2");
//returns a RANGE object
var myrow = excel_sheet.Columns(1);
//doing this puts a single range object in myarray
var myarray = new Array(myrow);
//try printing the contents of the range object
for (mycell in myrow){
document.getElementById('div1').innerHTML = mycell;
}
}

Please check the following code to get data from an excel file. Hope this helps you:
CODE:
function GetData(){
var excel = new ActiveXObject("Excel.Application");
var excel_file = excel.Workbooks.Open("C:\\Data.xls");
var excel_sheet = excel.Worksheets("Sheet2");
for(var i=2;i<20;i++){
var myrow = excel_sheet.Range("A"+i); //to read values in row A
document.getElementById('div1').innerHTML = myrow;
}
}
Tested in IE9.

Photoshop Scripting array to json

I want to get all the layers in a json document.
Here is my code :
#include json2.js
var doc = app.activeDocument;
var allLayers = [];
var allLayers = collectAllLayers(doc, allLayers);
function collectAllLayers (doc, allLayers){
for (var m = 0; m < doc.layers.length; m++){
var theLayer = doc.layers[m];
if (theLayer.typename === "ArtLayer"){
allLayers.push(theLayer);
}else{
collectAllLayers(theLayer, allLayers);
}
}
return allLayers;
}
var json = JSON.stringify(allLayers);
alert(json);
My efforts var json = JSON.stringify(allLayers); doesn't working. I want to allLayers change to json.
Thanks for help answers in advance!

Some of the types Photoshop uses aren't supported by JSON (like File for instance), so JSONing some of the Photoshop DOM objects won't work. You'll need to modify json2.js or create your own parser that'll create a jsonable object.