CODE :
var data={"today date":'12-02-2014' ,"created date":'10-2-1014'}
tpl= new Ext.XTemplate('<tpl for=".">','<p>{today date}</p>','<p>{created date}</p>','</tpl>');
here I have attached the sample code.
Simple answer: don't.
var data = {"today date":'12-02-2014' ,"created date":'10-2-1014'};
// notice udpated variable names
var tpl = new Ext.XTemplate('<tpl for=".">','<p>{today_date}</p>','<p>{created_date}</p>','</tpl>');
var fixedData = {};
Ext.each(Ext.Object.getKeys(data), function(key) {
fixedData[key.replace(/ /g, '_')] = data[key];
});
// test
alert(tpl.apply(fixedData));
Related
I want to bind my ng-model with JSON object nested key where my key is in a variable.
var data = {"course":{"sections":{"chapter_index":5}}};
var key = "course['sections']['chapter_index']"
Here I want to get value 5 from data JSON object.
I found the solution to convert "course.sections.chapter_index" to array notation like course['sections']['chapter_index'] this. but don't know how to extract value from data now
<script type="text/javascript">
var BRACKET_REGEXP = /^(.*)((?:\s*\[\s*\d+\s*\]\s*)|(?:\s*\[\s*"(?:[^"\\]|\\.)*"\s*\]\s*)|(?:\s*\[\s*'(?:[^'\\]|\\.)*'\s*\]\s*))(.*)$/;
var APOS_REGEXP = /'/g;
var DOT_REGEXP = /\./g;
var FUNC_REGEXP = /(\([^)]*\))?$/;
var preEval = function (path) {
var m = BRACKET_REGEXP.exec(path);
if (m) {
return (m[1] ? preEval(m[1]) : m[1]) + m[2] + (m[3] ? preEval(m[3]) : m[3]);
} else {
path = path.replace(APOS_REGEXP, '\\\'');
var parts = path.split(DOT_REGEXP);
var preparsed = [parts.shift()]; // first item must be var notation, thus skip
angular.forEach(parts, function (part) {
preparsed.push(part.replace(FUNC_REGEXP, '\']$1'));
});
return preparsed.join('[\'');
}
};
var data = {"course":{"sections":{"chapter_index":5}}};
var obj = preEval('course.sections.chapter_index');
console.log(obj);
</script>
Hope this also help others. I am near to close the solution,but don't know how can I get nested value from JSON.
This may be a good solution too
getDeepnestedValue(object: any, keys: string[]) {
keys.forEach((key: string) => {
object = object[key];
});
return object;
}
var jsonObject = {"address": {"line": {"line1": "","line2": ""}}};
var modelName = "address.line.line1";
var result = getDescendantPropValue(jsonObject, modelName);
function getDescendantPropValue(obj, modelName) {
console.log("modelName " + modelName);
var arr = modelName.split(".");
var val = obj;
for (var i = 0; i < arr.length; i++) {
val = val[arr[i]];
}
console.log("Val values final : " + JSON.stringify(val));
return val;
}
You are trying to combine 'dot notation' and 'bracket notation' to access properties in an object, which is generally not a good idea.
Source: "The Secret Life of Objects"
Here is an alternative.
var stringInput = 'course.sections.chapter_index'
var splitInput = stringInput.split(".")
data[splitInput[1]]][splitInput[2]][splitInput[3]] //5
//OR: Note that if you can construct the right string, you can also do this:
eval("data[splitInput[1]]][splitInput[2]][splitInput[3]]")
Essentially, if you use eval on a string, it'll evaluate a statement.
Now you just need to create the right string! You could use the above method, or tweak your current implementation and simply go
eval("data.course.sections.chapter_index") //5
Source MDN Eval docs.
var data = {
"course": {
"sections": {
"chapter_index": 5
}
}
};
var key = "course['sections']['chapter_index']";
var keys = key.replace(/'|]/g, '').split('[');
for (var i = 0; i < keys.length; i++) {
data = data[keys[i]];
}
console.log(data);
The simplest possible solution that will do what you want:
var data = {"course":{"sections":{"chapter_index":5}}};
var key = "course['sections']['chapter_index']";
with (data) {
var value = eval(key);
}
console.log(value);
//=> 5
Note that you should make sure key comes from a trusted source since it is eval'd.
Using with or eval is considered dangerous, and for a good reason, but this may be one of a few its legitimate use cases.
If you don't want to use eval you can do a one liner reduce:
var data = {"course":{"sections":{"chapter_index":5}}};
var key = "course['sections']['chapter_index']"
key.split(/"|'|\]|\.|\[/).reduce((s,c)=>c===""?s:s&&s[c], data)
I have two textbox(goalText and goalText1) and a button(goalreach) in my html.
My aim : When I enter numeric value in 1 textbox(goalText), it should be converted to json and be stored. So even after 5 days when I run the application, it should be stored. Now when I enter the numeric value, in other textbox(goalText1) and it matches, I am simply displaying the message match. This is the demo, I am trying so that I can know that value can be stored in json and can be retrieved when necessary. I have written the code as follow:
$("#goalreach").click(function () {
var contact = new Object();
contact.goalDist = "$("#goalText.value ").val()";
var jsonText = JSON.stringify(contact);
if (jsonText == ($("#goalText1.value").val())) {
document.getElementById('divid').innerHTML = 'Match';
}
});
I know, I have made many simple mistakes of brackets and " too, but I am a newbie, If you can help me out.
First, you have to compare either 2 objects or 2 strings, and in goalDist, you should store the value (BTW, you get the jQuery object with $("#goalText") and the value with somejQueryObject.val() moreover this is generally equivalent to document.getElementById("goalText").value)...
This can be done like this :
$("#goalreach").click(function () {
// Create an object with the single property "goalDist"
var contact = { goalDist : $("#goalText").val() };
// Makes it be a string (it will in this simple example : `"{"goalDist":<the value of goalTest>}"`
var jsonText = JSON.stringify(contact);
// Creates a string from an equivalent object bound on the second field
var jsonText2 = JSON.stringify({ goalDist : $("#goalText2").val() });
// Compares the 2 strings
if (jsonText === jsonText2) {
document.getElementById('divid').innerHTML = 'Match';
}
});
TRY THIS
$("#goalreach").click(function () {
var contact = new Object();
var goalDist = '$("#goalText.value").val()';
var jsonText = JSON.stringify(contact.goalDist);
if(jsonText==($("#goalText1.value").val()))
{
document.getElementById('divid').innerHTML = 'Match';
}
});
Try the following code:
$("#goalreach").click(function () {
var contact = new Object();
contact.goalDist = $("#goalText").val();
var jsonText = JSON.stringify(contact);
if (jsonText == ($("#goalText1").val())) {
document.getElementById('divid').innerHTML = 'Match';
}
});
OR
$("#goalreach").click(function () {
var goalText = $("#goalText").val();
var goalText1 = $("#goalText1").val();
if (goalText == goalText1) {
document.getElementById('divid').innerHTML = 'Match';
}
});
I have that code:
private function handleFlashVarsXmlLoaded(event:Event) : void
{
var secondsplit:String = null;
var item:Array = null;
var string:* = XML(String(event.target.data));
var notsplited:* = string.vars_CDATA; //what is .vars_CDATA?
var splitted:* = notsplitted.split("&");
var datacontainer:Object = {};
var index:Number = 0;
item = secondsplit.split("=");
datacontainer[item[0]] = item[1];
this.parseFlashVars(datacontainer); // go next
return;
}
That function is loaded when URLLoader is loaded.
I think that this function parse a XML file to string(fe. param1=arg1¶m2=arg2), then split it by "&" and then by "=" and add data to datacontainer by
datacontainer["param1"] = "arg1"
But how should the XML file look like and what is string.vars_CDATA
I think, vars_CDATA is just a name of XML field, becourse variable named "string" is contains whole XML. So var "notsplited" contains a String-typed data of this field (I think so, becourse of the line "var splitted:* = notsplitted.split("&");", which splits String to Array).
I'm trying to load a txt file of variables into my AS3 project. The problem I have though seems to be down to the fact that the txt file (which is pre formatted and cannot be changed) is formatted using double amphersands... e.g.
&name=mark&
&address=here&
&tel=12345&
I'm using the following code to load the txt file
myLoader.addEventListener(Event.COMPLETE, onLoaded, false, 0, true);
myLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
urlRqSend = new URLRequest(addressToTxt.txt);
public function onLoaded(e:Event):void {
trace(myLoader.data);
}
Using URLLoaderDataFormat.VARIABLES generates the following error:
Error: Error #2101: The String passed to URLVariables.decode() must be a URL-encoded query string containing name/value pairs.
If I use URLLoaderDataFormat.TEXT I can load the data successfully but I'm not able (or don't know how to) access the variables.
Would anyone have any ideas or work arounds to this please.
Thanks,
Mark
I had that kind of problem some time ago.
I suggest you to load first as a text, remove those line breaks, the extra amphersands and parse manually:
var textVariables:String;
var objectVariables:Object = new Object();
...
myLoader.addEventListener(Event.COMPLETE, onLoaded, false, 0, true);
myLoader.dataFormat = URLLoaderDataFormat.TEXT;
urlRqSend = new URLRequest(addressToTxt.txt);
public function onLoaded(e:Event):void {
textVariables = myLoader.data;
textVariables = textVariables.split("\n").join("").split("\r").join(""); // removing line breaks
textVariables = textVariables.split("&&").join("&"); // removing extra amphersands
var params:Array = textVariables.split('&');
for(var i:int=0, index=-1; i < params.length; i++)
{
var keyValuePair:String = params[i];
if((index = keyValuePair.indexOf("=")) > 0)
{
var key:String = keyValuePair.substring(0,index);
var value:String = keyValuePair.substring(index+1);
objectVariables[key] = value;
trace("[", key ,"] = ", value);
}
}
}
I wrote that code directly here, I don't have any AS3 editor here, so, maybe you'll find errors.
If you have data in String and it has a structure just like you wrote, you can do a workaround:
dataInString = dataInString.split("\n").join("").split("\r").join(""); // removing EOL
dataInString = dataInString.slice(0,-1); // removing last "&"
dataInString = dataInString.slice(0,1); // removing first "&"
var array:Array = dataInString.split("&&");
var myVariables:Object = new Object();
for each(var item:String in array) {
var pair:Array = item.split("=");
myVariables[pair[0]] = pair[1];
}
That should make you an object with proper variables.
We have the Class object (an object that reference a Class) so you can create objects from that Class object:
var classObject:Class = package.to.class.AClass;
var objectFromClass:AClass = new classObject();
Now, I want to know what object is referenced by classObject. For example:
function Creator(classObject:Class):AClass
{
// here I want to know what class is referenced by classObject
return new classObject();
}
var classObject:Class = package.to.class.AClass;
var objectFromClass:AClass = Creator(classObject);
This works, but what if I pass a Class object that do not reference to AClass? I want to know if this happends and make somthing about it.
--- EDIT ---
Searching I found this function
flash.utils.getQualifiedClassName(value:*):String
This function returns the name of the class, for example:
var name:String = '';
// name = ''
name = flash.utils.getQualifiedClassName(package.to.class.AClass);
// name = 'AClass'
name = ''
// name = ''
var anInstance:AClass = new AClass();
name = flash.utils.getQualifiedClassName(anInstance);
// name = 'AClass'
So, all I have to do is to compare the results of that function:
function Creator(classObject:Class):AClass
{
var anInstance:AClass = new AClass();
var className:String = flash.utils.getQualifiedClassName(anInstance);
var classObjectName:String = flash.utils.getQualifiedClassName(classObject);
// here className and classObjectName are 'AClass' :)
if (className != classObjectName)
throw new Error('The classes are different');
return new classObject();
}
var classObject:Class = package.to.class.AClass;
var objectFromClass:AClass = Creator(classObject);
--- EDIT 2 ---
Another method is to use the constructor property of the Object class:
function Creator(classObject:Class):AClass
{
var tempInstance:AClass = new AClass();
var tempClassObject:Class = Object(tempInstance).constructor;
if (classObject != tempClassObject)
throw new Error('The classes are different');
return new classObject();
}
I found that the most simplest (not know if it's the fastest) way to accomplish this task is in the next example:
function Creator(classObject:Class):AClass
{
var anInstance:Object = new classObject() as AClass;
if (anInstance == null)
throw new Error('The classes are different');
return new classObject(); // or return anInstance as AClass;
}
This also works if AClass is an Interface.