I'm creating this array.
var GPA_Array:Array=new Array();
var dg:DataGrid= new DataGrid();
gpaBuild();
function gpaBuild()
{
dg.columns=["Num","Course","Grade","Credits"];
GPA_Array.push({Num:"1",Course:"ADS",Grade:"A+",Credits:"4"});
GPA_Array.push({Num:"1",Course:"ADD",Grade:"A+",Credits:"4"});
dg.dataProvider=new DataProvider(GPA_Array);
}
after pushing data in the array ,i need to accees Grade and credits.
I have tried this method,
GPA_Array[0][1],GPA_array[0][2] ,
but it didn't work.
If i try to trace it
trace(GPA_Array[0][1])
it gives me undefined .
also ,when i use trace(GPA_array.toString), it gives me error.
Your push() method appears to be pushing an object into your array, so GPA_Array[0][1] will likely throw an exception. Treating each item in the array as an object and using object notation, you should be able to access it with something like:
Object gpaEntry = GPA_Array[0];
trace("gpaEntry {Num:" + gpaEntry.Num + ",Course:" + gpaEntry.Course + ",Grade:" + gpaEntry.Grade + ",Credits:" + gpaEntry.Credits + "});
Related
I am trying to output the contents of an array within an array to a small area on an HTML page. I can only get one dimensional arrays to output.
Simplified, the intended array has a number of properties, but am struggling to find the correct code to output an array nested inside an array.
Properties are;
ID(integer)
Location(string)
Postcode(String)
other properties may be added down the line.
To output the information I am using the following code (which I can only get to work on a single array - even if I change to using [i][x] )
document.write("<tr><td>ID " + i + " is:</td>");
document.write("<td>" + LocationArray[i] + "</td></tr>");
How do I correctly create an array capable of storing the information and then output a specific part of it? eg display the contents of LocationArray[2][3]
Is document.write an efficient method, or is there something better?
I put something together, that could help you. To answer your question at the end about creating an array 'the right way'; There are two possibilities:
Create an array with 'property'-based properties : var locationsArray = [{ID:123,Location:'blabla',Postalcode:'1234'}];
Create an array with string-keys : var locationsArray = [{'ID':123,'Location':'blabla','Postalcode':'1234'}];
In my example I used the first attempt.
To your second question: document.write just writes at the end of the document. If you want to write to a specific area of the website, create a container (for example) and give it an id. Then change the property innerHTML of the created container, as I did in my example.
HTML:
<div id="locations"></div>
<button onclick="printLocations()">Print Locations</button>
Javascript:
function printLocations() {
var locationsArray = [{
ID : 123,
Location : 'Candyland',
Postalcode : '1234'
}, {
ID : 456,
Location : 'Middle-Earth',
Postalcode : '4567'
}
];
var locationsHtml = '';
for (var index in locationsArray) {
locationsHtml += 'ID: ' + locationsArray[index].ID + ', ' +
'Location: ' + locationsArray[index].Location + ', ' +
'Postalcode: ' + locationsArray[index].Postalcode + '<br />';
}
console.log(locationsHtml);
document.getElementById('locations').innerHTML = locationsHtml;
}
If you just want to write a specific part of the array (in your example just one specific location) just use the index you want and access it the same way as in the for loop in my example:
var locationsHtml = locationsArray[1].ID + locationsArray[1].Location + etc...;
/*with string-keys: var locationsHtml = locationsArray[1]['ID'] + etc...;*/
document.getElementById('locations').innerHTML = locationsHtml;
In Actionscript, I'm trying to find a way to produce strings and string variables which spit out different text each time they're brought up. To purely visualize:
var text:String "Red||Blue"; //Whenever the variable is called, it's either Red or Blue
textoutput("You spot a grey||black cat."); //A function equivalent of the same issue
I can produce a function which does this effect, but it seems a variable cannot be a function, as far as I can tell.
I've considered array variables, but I have no idea how to use an array to spit out a single entry when the variable is called, and I don't know how to make this work for a string that isn't a variable -- assuming I can get away with a single system that works for both situations.
Edit
To expand upon the issue expressed in Batman's answer, using his result on a variable produces a result that 'sticks' to whichever it randomly chooses. Example:
var shoes:String = grabRandomItem("Red shoes||Crimson shoes");
trace("You have " + shoes + ".") //Whichever result is chosen it stays that way.
Moreover, I may want to change this variable to something else that is entirely not-random:
var secondshoes:String = "Blue shoes";
function newshoes():
{
shoes = secondshoes;
}
You want a random value from a list of possible values. Rather than call the variable, you can reference it dynamically...
function random(low:Number=0, high:Number=1):Number {
/* Returns a random number between the low and high values given. */
return Math.floor(Math.random() * (1+high-low)) + low;
}
var options:Array = ["red", "blue", "grey", "black"];
trace("You spot a " + options[random(0, options.length-1)] + " cat.")
//You spot a black cat.
Alternatively, you can use a function in place of a variable to remove the inline logic...
function catColor():String { return options[random(0, options.length-1)]; }
trace("You found a " + catColor() + " key.")
// You found a red key.
Or generalize it to a generic function with arguments.
var options:Object = {
"cat":["grey", "black"],
"key":["gold", "silver"],
"door":["blue", "red", "green"]
}
function get(item:String):String {
return options[item][random(0, options[item].length-1)];
}
trace("You found a " + get("door") + " door.")
// You found a green door.
There are a ton of ways to do this, but to align with the way you'd like to do it, here is the simplest way to accomplish this:
//populate your string: (remove the word private if using timeline code)
private var text_:String = "Red||Blue||Green||Yellow";
//create a getter to use a function like a property
function get text():String {
//create an array by splitting the text on instances of ||
var arr:Array = text_.split("||");
//return a random element of the array you just made
return arr[Math.floor(Math.random() * arr.length)];
}
trace(text);
Even better, create a common function to parse your string:
function grabRandomItem(str:String):String {
var arr:Array = str.split("||");
return arr[Math.floor(Math.random() * arr.length)];
}
//make a getter variable that regenerates everytime it's called.
function get label():String {
return "You spot a " + grabRandomItem("grey||black||blue||red||purple") + " cat";
}
trace(label); //anytime you access the label var, it will re-generate the randomized string
trace(label);
trace(label);
trace(label);
// ^^ should have different results
Of course, this way I think only works best if the text comes from user input. If you are hard coding the text into the app, you might as well just create it in an array directly as show in another answer you have as there's less overhead involved that way.
I am wondering is it possible to run a function that outputs a line that javascript can read and recognize as a variable and not as a string? I have pulled JSON data and what I want to do is to take the object data and dynamically write out variables from it on the fly. I hope this is possible..
function createVar(data){
return "var_" + data.name + data.id + "=_" + data.desc;
//This will return the line :
var itemModel1 = "I no longer vote";
}
I have to say that I don't really recommend this, but it does work.
function createVar(data){
return "var " + data.name + data.id + "='" + data.desc + "'";
}
var exampleData = {name:"itemModel", id:"1", desc:"Today we went to the mall"}
eval(createVar(exampleData));
console.log(itemModel1); //outputs "Today we went to the mall" to the console
I will clarify by saying that if you actually need to generate variable names on the fly, this will do the trick. But I would more closely examine your code to see if there is another way to accomplish what you are trying to do. As always, you have to be very careful with eval, bad things can happen if user input gets passed as your data parameter.
First time poster here for Google Script related services, hopefully I put it in the right place! I'm encountering an error and I can't seem to find the right terminology to look up a solution. Below is the function. Within it I have a variable, string1, that I apply the split to. If I hard-code the value of the string (in the line commented out in the string), then it works and I receive the correct output. If, on the other hand, I try to pass that string into the function from another function, I receive the following error:
"TypeError: Cannot find function split in object Wed Oct 30 2013 09:00:26 GMT-0400 (EDT),danno,ticket,netid,request,mac,Error - Invalid Mac / Mac Not Found."
Note: My call to the function looks like this - formatEmailRow(completeEmailArray[i])
function formatEmailRow(rowToFormat) {
var formattedString = "";
var array1 = [];
var string1 = "";
///////////////////////
string1 = rowToFormat;
//string1 ="10/30/2013 9:00:26,danno,ticket,netid,request,mac,Error - Invalid Mac / Mac Not Found ";
///////////////////////
array1 = string1.split(",| ,|, ");
if (array1 != ""){
for (var i = 0; i < array1.length; i++) {
formattedString = formattedString + " " +(array1[i]);
}}
return formattedString;
}
Please help!
Thanks ahead of time, any advice is appreciated!
-Danno
You're getting that error because .split() isn't a method contained in the type of object you've passed in. Since you're new to this, it's worth a pause to read up on Objects and Methods - this is a quick overview.
You want to receive a String, but it seems that you're not. The problem will be with the code that's calling formatEmailRow().
My guess is that you're passing an array - probably all the cells in a row - but here's how you can check.
Add this line as the first line in your function:
Logger.log("rowToFormat = " + JSON.stringify(rowToFormat));
... then run, with your error. Check the logs - you want to see that you are getting a simple string. If you're getting an array, then you know what you need to fix. (Maybe you want to get the array after all!)
I'm working with a large set of hierarchical taxonomic terms, where each term ("203") has a matching "term203" movie clip on the stage, and am having trouble getting a recursive function to return all of a given term's descendants.
There is a main Dictionary() object with the following nested organization for each term:
{ [object Movie Clip] : { "tid":203, "parent":99, "name":"Culture", selected:false, "otherData":"etc" } }
...where the [object Movie Clip]'s instance name would be "term203". All of these object:subObjectArray items ("terms") are stored in a master taxonomy:Dictionary() object.
I've been trying to make a recursive function (which is in itself already a little above my head) that takes the click.target of a movie clip and returns a new Dictionary() object with all of the children and grandchildren and great grandchildren (etc) of that term, in the same, nested organization described above.
The code below traces the right number of recursive loops, but the returned Dictionary() object only contains the first run's terms (only the immediate children of the requested term).
var taxonomy:Dictionary = new Dictionary();
// ...Term info is loaded into taxonomy from a JSON-style text file)
// ...MOUSE_OVER event listeners are added to each
function revealChildren(hvr:MouseEvent):void {
trace("Spotlighting " + taxonomy[hvr.target].name + "'s children...");
for(var key:Object in getAllChildren(taxonomy[hvr.target].tid)) {
trace("Animating " + taxonomy[key].tid); // Traces only immediate children
var revealTween = new Tween(key, "alpha", Regular.easeInOut, key.alpha, 1, 1, true);
}
}
function getAllChildren(origin):Dictionary {
var children:Dictionary = new Dictionary();
for(var element:Object in taxonomy) {
if(taxonomy[element].parent == origin) {
var subSet = getAllChildren(taxonomy[element].tid);
children[element] = subSet; // *CAN'T ACCESS 'subSet' PROPERLY*
trace("Parent = " + origin);
trace("Matched! Adding " + taxonomy[element].tid + " as key and setting its value to " + subSet); // Traces correct amount of times, one for each descendent
}
else {
}
}
return children;
}
I certainly do not claim to be the most efficient AS3 programmer, so I am open to alternative configurations. However, after trying static and nested Arrays, I would prefer to continue using the Dictionary() object as my main pool.
As noted, only the immediate children end up animating in the revealChildren() function. It's mystifying to me then, that in the getAllChildren() function, all of the descendants trace sequentially (well in no particular order) in the output window.
Also I can't get any sort of name or property out of the subSet Object. That could be the problem.
I've only tested it as far as 'two generations,' but it seems that only the first round of calling the function successfully adds those terms to the new Dictionary() object and returns it intact to the animating function.
Too bad dict.filter(getDescendants) won't work. Please help!
To simplify things, I've added an output parameter called children. This is the Dictionary into which our function will store its results. It has a default value, so you don't need to specify one. In that case, it will create a new instance for itself.
function getAllChildren(origin:*, children:Dictionary = null):Dictionary {
if (children = null) children = new Dictionary();
for(var element:* in taxonomy) {
if(taxonomy[element].parent == origin) {
children[element] = taxonomy[element];
getAllChildren(taxonomy[element].tid, children);
}
}
return children;
}
When a child is discovered, it is copied over exactly: children[element] = taxonomy[element];
Next, the function calls itself recursively, supplying it the same output dictionary as it has been using.
Edit:
In response to your comment... Your code originally said this after finding a child named element:
children[element] = getAllChildren(taxonomy[element].tid);
You're making children[element] equal to a Dictionary object here. What you create is a tree structure, mapping MovieClip objects to Dictionary objects containing a similar mapping of its children. Using a for in loop on this structure will only give you the top-level children. It will not recursively traverse the entire tree.