GOAL:
I'm trying to validate the user's email address as he/she types.
I'm just using simple regex because I don't want to use any external library. Also if use the regex like in here regex email for java I'm encountering error PatternSyntaxException that's why I prefer simple regex for now.
So I put the TextFormatter and UnaryOperator inside the initialize method.
#FXML
public void initialize()
{
//1. USE UNARY FIRST TO MAKE FILTER BEFORE USING TEXTFORMATTER
UnaryOperator <TextFormatter.Change> filterEmail = (change ->{
if(change.getControlNewText().matches("^(.+)#(.+)$*"))
{
lblEmailError.setVisible(false);
txtEmailAdd.setBorder(null);
return change;
}
else
{
lblEmailError.setText("Invalid Email");
lblEmailError.setVisible(true);
txtEmailAdd.setBorder(new Border(new BorderStroke(Color.RED, BorderStrokeStyle.SOLID, new CornerRadii(3), new BorderWidths(2), new Insets(-2))));
return null;
}
});
TextFormatter <String> tf = new TextFormatter<String>(filterEmail);
txtEmailAdd.setTextFormatter(tf);
}
But as long as the FXML loads I can't type anymore in the TextField and can't be edited anymore. I can't type anything. Maybe there is something wrong with my condition or I'm wrong putting it inside the initialize method.
I'm lost. I have already dug the web on how to validate email in java using regex.
like this Java regex email
I'm also using SceneBuilder to build the fxml. Any help will do thanks in advance.
For a long time the following code did work perfectly to extract hyperlinks from a text using regex-expression:
var text = "this is a http://google.de link!";
var link = text.match("(?:(?:https?|ftp|file):\/\/|www\.|ftp\.)(?:\([-A-Z0-9+üäö&##/%=~_|$?!:,.]*\)|[-A-Z0-9+üäö&##/%=~_|$?!:,.])*(?:\([-A-Z0-9+üäö&##/%=~_|$?!:,.]*\)|[A-Z0-9+üäö&##/%=~_|$])", "gi");
The result should be "http://google.de" for the variable link. But it doesn't work anymore. I deem Google has changed something in GAS!?
Can you please tell me, which expression I can use to extract hyperlinks from a string?
This question already has answers here:
Safely turning a JSON string into an object
(28 answers)
Closed 7 years ago.
I want to parse a JSON string in JavaScript. The response is something like
var response = '{"result":true,"count":1}';
How can I get the values result and count from this?
The standard way to parse JSON in JavaScript is JSON.parse()
The JSON API was introduced with ES5 (2011) and has since been implemented in >99% of browsers by market share, and Node.js. Its usage is simple:
const json = '{ "fruit": "pineapple", "fingers": 10 }';
const obj = JSON.parse(json);
console.log(obj.fruit, obj.fingers);
The only time you won't be able to use JSON.parse() is if you are programming for an ancient browser, such as IE 7 (2006), IE 6 (2001), Firefox 3 (2008), Safari 3.x (2009), etc. Alternatively, you may be in an esoteric JavaScript environment that doesn't include the standard APIs. In these cases, use json2.js, the reference implementation of JSON written by Douglas Crockford, the inventor of JSON. That library will provide an implementation of JSON.parse().
When processing extremely large JSON files, JSON.parse() may choke because of its synchronous nature and design. To resolve this, the JSON website recommends third-party libraries such as Oboe.js and clarinet, which provide streaming JSON parsing.
jQuery once had a $.parseJSON() function, but it was deprecated with jQuery 3.0. In any case, for a long time, it was nothing more than a wrapper around JSON.parse().
WARNING!
This answer stems from an ancient era of JavaScript programming during which there was no builtin way to parse JSON. The advice given here is no longer applicable and probably dangerous. From a modern perspective, parsing JSON by involving jQuery or calling eval() is nonsense. Unless you need to support IE 7 or Firefox 3.0, the correct way to parse JSON is JSON.parse().
First of all, you have to make sure that the JSON code is valid.
After that, I would recommend using a JavaScript library such as jQuery or Prototype if you can because these things are handled well in those libraries.
On the other hand, if you don't want to use a library and you can vouch for the validity of the JSON object, I would simply wrap the string in an anonymous function and use the eval function.
This is not recommended if you are getting the JSON object from another source that isn't absolutely trusted because the eval function allows for renegade code if you will.
Here is an example of using the eval function:
var strJSON = '{"result":true,"count":1}';
var objJSON = eval("(function(){return " + strJSON + ";})()");
alert(objJSON.result);
alert(objJSON.count);
If you control what browser is being used or you are not worried people with an older browser, you can always use the JSON.parse method.
This is really the ideal solution for the future.
If you are getting this from an outside site it might be helpful to use jQuery's getJSON. If it's a list you can iterate through it with $.each
$.getJSON(url, function (json) {
alert(json.result);
$.each(json.list, function (i, fb) {
alert(fb.result);
});
});
If you want to use JSON 3 for older browsers, you can load it conditionally with:
<script>
window.JSON ||
document.write('<script src="//cdnjs.cloudflare.com/ajax/libs/json3/3.2.4/json3.min.js"><\/scr'+'ipt>');
</script>
Now the standard window.JSON object is available to you no matter what browser a client is running.
The following example will make it clear:
let contactJSON = '{"name":"John Doe","age":"11"}';
let contact = JSON.parse(contactJSON);
console.log(contact.name + ", " + contact.age);
// Output: John Doe, 11
If you pass a string variable (a well-formed JSON string) to JSON.parse from MVC #Viewbag that has doublequote, '"', as quotes, you need to process it before JSON.parse (jsonstring)
var jsonstring = '#ViewBag.jsonstring';
jsonstring = jsonstring.replace(/"/g, '"');
You can either use the eval function as in some other answers. (Don't forget the extra braces.) You will know why when you dig deeper), or simply use the jQuery function parseJSON:
var response = '{"result":true , "count":1}';
var parsedJSON = $.parseJSON(response);
OR
You can use this below code.
var response = '{"result":true , "count":1}';
var jsonObject = JSON.parse(response);
And you can access the fields using jsonObject.result and jsonObject.count.
Update:
If your output is undefined then you need to follow THIS answer. Maybe your json string has an array format. You need to access the json object properties like this
var response = '[{"result":true , "count":1}]'; // <~ Array with [] tag
var jsonObject = JSON.parse(response);
console.log(jsonObject[0].result); //Output true
console.log(jsonObject[0].count); //Output 1
The easiest way using parse() method:
var response = '{"a":true,"b":1}';
var JsonObject= JSON.parse(response);
this is an example of how to get values:
var myResponseResult = JsonObject.a;
var myResponseCount = JsonObject.b;
JSON.parse() converts any JSON String passed into the function, to a JSON object.
For better understanding, press F12 to open the Inspect Element of your browser, and go to the console to write the following commands:
var response = '{"result":true,"count":1}'; // Sample JSON object (string form)
JSON.parse(response); // Converts passed string to a JSON object.
Now run the command:
console.log(JSON.parse(response));
You'll get output as Object {result: true, count: 1}.
In order to use that object, you can assign it to the variable, let's say obj:
var obj = JSON.parse(response);
Now by using obj and the dot(.) operator you can access properties of the JSON Object.
Try to run the command
console.log(obj.result);
Without using a library you can use eval - the only time you should use. It's safer to use a library though.
eg...
var response = '{"result":true , "count":1}';
var parsedJSON = eval('('+response+')');
var result=parsedJSON.result;
var count=parsedJSON.count;
alert('result:'+result+' count:'+count);
If you like
var response = '{"result":true,"count":1}';
var JsonObject= JSON.parse(response);
you can access the JSON elements by JsonObject with (.) dot:
JsonObject.result;
JsonObject.count;
I thought JSON.parse(myObject) would work. But depending on the browsers, it might be worth using eval('('+myObject+')'). The only issue I can recommend watching out for is the multi-level list in JSON.
An easy way to do it:
var data = '{"result":true,"count":1}';
var json = eval("[" +data+ "]")[0]; // ;)
If you use Dojo Toolkit:
require(["dojo/json"], function(JSON){
JSON.parse('{"hello":"world"}', true);
});
As mentioned by numerous others, most browsers support JSON.parse and JSON.stringify.
Now, I'd also like to add that if you are using AngularJS (which I highly recommend), then it also provides the functionality that you require:
var myJson = '{"result": true, "count": 1}';
var obj = angular.fromJson(myJson);//equivalent to JSON.parse(myJson)
var backToJson = angular.toJson(obj);//equivalent to JSON.stringify(obj)
I just wanted to add the stuff about AngularJS to provide another option. NOTE that AngularJS doesn't officially support Internet Explorer 8 (and older versions, for that matter), though through experience most of the stuff seems to work pretty well.
If you use jQuery, it is simple:
var response = '{"result":true,"count":1}';
var obj = $.parseJSON(response);
alert(obj.result); //true
alert(obj.count); //1
I want to get the email body from my Gmail account for an email so i use this code i found it in an example for how to read emails using c++ builder pop3
the code to extract body used
TIdText *EText;
int message = SpinEdit1->Value;
MyPoP3->Retrieve(message, MyEmail);
Edit1->Text = MyEmail->Subject + " | " + MyEmail->From->Address;
Memo1->Clear();
for (int i = 0; i < MyEmail->MessageParts->Count; i++) {
Memo1->Lines->Add(MyEmail->MessageParts->Items[i]->ContentType);
EText = dynamic_cast<TIdText*>(MyEmail->MessageParts->Items[i]);
Memo1->Lines->Add(EText->Body);
}
the problem is that i got undefine symbol to TidText and what i tried is to change it from TIdText to TIdMessage, but i got that i can't convert to it.
also i tried to try this without loop or something MyEmail->Body->Text
this return empty string.
the video i got this code from it here i don't know maybe the c++ builder he use is old. now i want to know how to extract the body text from the email address.
Thanks in advance.
the problem is that i got undefine symbol to TidText
Your code is missing an #include <IdText.hpp> statement.
what i tried is to change it from TIdText to TIdMessage, but i got that i can't convert to it.
Because TIdMessage does not contain nested TIdMessage objects.
also i tried to try this without loop or something MyEmail->Body->Text this return empty string.
If your email is MIME encoded, its text is not stored in the TIdMessage::Body property, but in a nested TIdText object within the TIdMessage::MessageParts collection. You have to look at the TIdMessage::ContentType property to know what kind of structure the email contains. For instance, if the CT begins with text/, the text is in the TIdMessage::Body. But if the CT begins with multipart/, the text is somewhere in the TIdMessage::MessageParts instead.
You should read this blog article on Indy's website for an example of how emails might be structured:
HTML Messages
the video i got this code from it here i don't know maybe the c++ builder he use is old.
No, it is not.
I've had a scout around and can't seem to find the answer anywhere, so need to ask.
I'm trying to query the WMI on a remote machine, but I need to do so as the admin account and I'm having problems doing so.
The code I am using is:
Public Sub OperatingSystem(ByVal computeritem As String)
'set Username and Password which system will access the network with.
Dim options As ConnectionOptions
options = New ConnectionOptions()
options.Authority = "ntdlmdomain:" & ipaddress
options.Username = "Username"
options.Password = "Password"
scope = New ManagementScope("\\" & ipaddress & "\root\cimv2", options)
scope.Connect()
Dim query As ObjectQuery
query = New ObjectQuery("SELECT * FROM Win32_OperatingSystem")
Dim searcher As ManagementObjectSearcher
searcher = New ManagementObjectSearcher(scope, query)
the query continues to go and pull all kinds of information through to a spradsheet.. well it would if it worked!
The line of code that is falling over is:
scope = New ManagementScope("\\" & ipaddress & "\root\cimv2", options)
scope.Connect()
It's giving me an error message that just says 'Invalid parameter'. When I go to view detail, there's nothing in inner exception and the only thing that I can see of any value is ErrorCode:ManagementStatus.InvalidParameter
I apologize if this is something really simple.. I am still fairly new to this but if someone could give me some guidance that would really be appreciated.
Many Thanks.
It looks like the reference to ipaddress is not initialized. Since computeritem is passed as a parameter to the sub, your code might work better with:
scope = New ManagementScope("\\" & computeritem & "\root\cimv2", options)