Storing data into Array

[mingteikg]

I am trying to store data into an Array in JS. The following works:

arrayName = ['name','Owa22','Owa23','Owa24'];

Then doing a arrayName[1] would print out the value Owa22

But the problem is, I have the following:

var vehicleName = '['+searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue+']';

arrayName = vehicleName;

And when I do a:
arrayname[1], it will show me the character '

How do I store a string of text into a JS's array, frm the above...?

[astupidname]

You are quoting the brackets ']' thus creating a string as vehicleName's value and therefore arrayName's value. Take the quotes off the brackets and remove the + signs and then the string from the nodeValue will be in array.

[Kor]

Can we see an example of the searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue ? How does this string look like?

[mingteikg]

The value of searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue is:

'name','owa','owb','owc'

I tried removing the brackets and the + but it didnt work. Maybe the above text isn't a proper array?

Also, I tried changing the above searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue 's value to:

['name','owa','owb','owc']

But it still didnt't work.... The above text are generated by Java, and sent to the web application through <vehicleName>['name','owa','owb','owc']</vehicleName>, and using the searchLocation.getElementsByTagName("vehicleName") would extract the data out, and will then be stored under the JS var vehicleName...

Am I doing it the wrong way?

[mingteikg]

Code fragments:

if (http.readyState == 4) {
                    if (http.status == 200) {
                                                var searchLocation = http.responseXML.getElementsByTagName("searchLocation")[0];
                 
                        var results;
                       if (searchLocation!=null){
                            results = searchLocation.getElementsByTagName("latlng")[0].childNodes[0].nodeValue.split(",");
                            
var vehicleName = searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue;//searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue

//arrayName = ['name','Owa22','Owa23','Owa24'];
                            arrayName = vehicleName; //['name','Owa22','Owa23','Owa24'] <-- Problem here
                            alert('vehicleName '+vehicleName);
                            alert('arrayName[1] '+arrayName[1]);
                        }

A sample XML that the above receives:

<searchLocation>
<latlng>29.01110,101.20021</latlng>
<vehicleName>['name','owa','owb','owc']</vehicleName>
</searchLocation>

[ZeroKilled]

whatever text you read from the DOM, javascript read it as a string type value. what you are expecting is to use that string and be treated as javascript statement. in that case you have to eval the string.

[mingteikg]

Yep, eval() fixed the problem!

Thanks!

[Kor]

Well, eval() is to be avoided whenever is possible, and in this case it is possible. Write your XML like:

<searchLocation>
<latlng>29.01110,101.20021</latlng>
<vehicleName>name,owa,owb,owc</vehicleName>
</searchLocation>

Now you will achieve an array by simply splitting the string response upon the delimiter (the comma)

var vehicleName = searchLocation.getElementsByTagName("vehicleName")[0].childNodes[0].nodeValue;
var arrayName= vehicleName.split(',');