const test ="[{contactId=2525, additionDetail=samle}]";
I need to convert this string to a JSON object. It will dynamically load like this string. I need to particular string to convert to a JSON object.
JSON.parse(test) command not working for this. I attached the error here.
For that specific string, you'd have to parse it yourself.
const test = '[{contactId=2525, additionDetail=samle}]';
const obj = {};
test.split(/[{}]/)[1].split(/, /).forEach((elm) => {
const entry = elm.split('=');
obj[entry[0]] = entry[1];
});
What I am doing is splitting the string on the braces and selecting the second element (utilising regex) then splitting that on comma and space (again regex) then loop over the result and assign to an object.
You can then JSON.stringify(obj) for the result.
:edit:
For the second string you've asked for there is another, potentially more refined, answer. You'll need to first replace the = with : (I've again used a regex), then you use a regex to match the words and sentence and use a function to add the quotes.
const test = '[{contactId=2525, additionDetail=samle}]';
const test2 = "[{contactId=2525, additionDetail=rrr additional Detail, medicationType={medicationTypeId=3333, medicationType=Tablet}, endDate=2022-12-30}]";
const replaced = test.replace(/=/g,':')
const replaced2 = test2.replace(/=/g, ':');
const replacer = function(match){
return '"' + match + '"';
}
const replacedQuote = replaced.replace(/(?!\s)[-?\w ?]+/g,replacer);
const replaced2Quote = replaced2.replace(/(?!\s)[-?\w ?]+/g,replacer);
const obj = JSON.parse(replacedQuote);
const obj2 = JSON.parse(replaced2Quote);
You should note that Json means javascript object notation, so you need to create a JavaScript object to get started:
const test ="[{contactId=2525, additionDetail=samle}]";
let obj = Object.create(null)
You can now define your variable as one of the object properties :
obj.test = test
Now we have a JavaScript object and we can convert it to json:
let convertedToJson = JSON.stringify(test);
[{contactId=2525, additionDetail=samle}]
this is not a valid JSON-string, and it cannot be parsed by JSON.parse()
the correct JSON-string would be:
const test ='[{"contactId":2525, "additionDetail":"samle"}]';
Related
I have a code like this :
// Language = Dart
var someVariable = 'Hello';
var someOtherVariable = 'World';
var str = 'somedomain?x=${someVariable}&y=${someOtherVariable}';
return str;
// Expected:
// somedomain?x=Hello&y=World;
// Actual
// somedomain?x=Hello
If I replace the & character with any alphabets, it is able to successfully concatenate. What am I doing wrong.
This is the actual code which I used in FlutterFlow, and am having issues with:
Future<String> getEventUrlFromReference(BuildContext context, DocumentReference? eventReference) async {
var userId = currentUser?.uid as String;
return "https://somedomain.com/event?eventReference=${eventReference?.id}" + "&invitedBy="+userId;
}
// result: https://somedomain.com/event?eventReference=referencevalue
This was a string encoding issue. I was using the result of my function/code as body text in sms://<number>?&body=<string_containigng_&_character>; The text which is appended to the sms text truncates at the & character, and I made a mistake assuming it's a string concatenation issue.
I was trying to make a node's program that takes a string, and gets all of the content inside it:
var str = "Hello {world}!";
console.log(getBracketSubstrings(str)); // => ['world']
It works, but when I do:
var str = "Hello {world{!}}";
console.log(getBracketSubstrings(str)); // => ['world{!']
It returns ['world{!}'], when I want it to return:
['world{!}']
Is there anyway to do this to a string in nodes?
You could use a pattern with a capture group, matching from { followed by any char except a closing curly using [^}]* until you encounter a }
{([^}]*)}
See a regex demo
const getBracketSubstrings = s => Array.from(s.matchAll(/{([^}]*)}/g), x => x[1]);
console.log(getBracketSubstrings("Hello {world}!"));
console.log(getBracketSubstrings("Hello {world{!}}"));
I am working on an Angular app and having a bit of a problem.
I am trying to test my API by appending a string into a URL.
It works fine when I hardcode the string into the URL but when I append it won't work.
this is a function that will get the string that I want to append.
getString(str: string){
this.strAppend = str
}
this is the URL,
url: string = http://localhost:3000/document/id/${this.strAppend}/transaction?from=1610742245&to=1623439932
notice how I use this.strAppend. Well, this is not working. Is this even the right approach?
You can use Template Literals to solve your problem.
var base = 'url'
getString(strToAdd: string) {
return `${base}/${strToAdd}`;
}
var newStr = getString('test');
First declare the variable in string
for time being refer this
$scope.str1 = 'This is ';
$scope.str2 = 'Sticked Toghether';
$scope.res = '';
$scope.join = function() {
$scope.res = $scope.str1 + $scope.str2;
};
An object comes to me. I write the variable key and the value through the loop:
let update_info = [];
for (let[key, value] of Object.entries(req.body)) {
update_info.push(`${key} = ${value}`);
}
console.log(JSON.parse(update_info));
Output to console:
undefined:1
user_name = name,user_email = #email.com,user_password = 12345678,about = aboutaboutaboutabout
^
SyntaxError: Unexpected token u in JSON at position 0
Why it happens?
I need to be displayed in the console like this:
'user_name' = 'name','user_email' = '#email.com','user_password' = '12345678','about' = 'aboutaboutaboutabout
How do i implement this?
I've reproduced your code like this and all you need to do is
JSON.stringify turns a JavaScript object into JSON text and stores that JSON text in a string.
JSON.parse turns a string of JSON text into a JavaScript object.
let obj = {
"welcome": "hello",
"reply": "hi"
}
let update_info = [];
for (let[key, value] of Object.entries(obj)) {
update_info.push(`${key} = ${value}`);
}
console.log(JSON.stringify(update_info));
Try the below code:
You need not to parse it using JSON.parse because the array is not yet stringified, so you should use toString() to achieve the desired result
let update_info = [];
for (let[key, value] of Object.entries(req.body)) {
update_info.push(`'${key}' = '${value}'`);
}
console.log(update_info.toString());
If you are interested in printing the Object key value pair in the console to have better view use
console.log(JSON.stringify(object, undefined, 2))
This will print the object in proper format indented by 2 spaces
I am having string in two format as
[{"a":"a1"},{"a":"a2"}]'
I actually extract it in array:
[{"a":"a1"},{"a":"a2"}]
How to convert it?
Use JSON.parse()
const string = '[{"a":"a1"},{"a":"a2"}]'
const res = JSON.parse(string)
console.log('Result : ', res)
here is your string as arrayString:
const arrayString = `[{"a":"a1"},{"a":"a2"}]`;
JSON.parse(arrayString); // here you will find your desired result.
you can use JSON.parse to parse data JSON that is in string format