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Converting a javascript string into an existing javascript variable [closed]

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I am stuck with this problem. I have a function to accept the path and also the same time I have a variable that I want to condition with.
Here is my problem: I want to make a string type that will act as an access to my variable.
In my situation, I have a roles.operation variable which I want to access it dynamically.
The roles variable has an array with the values of:
roles.operations = ['document','article','document-type'];
with this variable I want this to be access dynamically.
Here is what I've tried, which in replacePath i have the value of document-type:
export const createVariable = (roles,path) => {
const replacePath = path.replace(/-/g,"_");
const finalPath = window[`roles.operations.${replacePath}`];
console.log(finalPath);
}
this gives me undefined.

Try this way:
const finalPath = window['roles']['operations'][replacePath];
or
const finalPath = window.roles.operations[replacePath];

Javascript: How to parse data from this string [closed]

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I have the following string returned from a server:
{"href":"about:blank#&executeFunction<-finishedStroke&&arguments<-{\"base64DataUrl\":\"data:image/png;base64,iVBORw0KGgoAAErkJggg==\"}&"}
I want to extract data:image/png;base64,iVBORw0KGgoAAErkJggg== (the base64DataURL part) from it. What's the best way to do this with Javascript?
Please note that I am asking how to parse values from JSON. This is not the same as this question, which asks how to extract fields from nested objects and arrays.
What I've tried: I have tried
JSON.parse(<string>).href.split('base64DataUrl":"')[1].split('"')[0]
which yields the right answer, but I'm hoping for a more concise solution.

This is JSON, but the part you're interested in isn't exposed as part of the object. So I would suggest that you just consider it a string and use a string-parsing method, like a regular expression.
const string = `{"href":"about:blank#&executeFunction<-finishedStroke&&arguments<-{\"base64DataUrl\":\"data:image/png;base64,iVBORw0KGgoAAErkJggg==\"}&"}`;
const dataURL = /"base64DataUrl":"(.*?(?="))/gm.exec(string)[1];
console.log(dataURL);

Since the server is not returning valid JSON, you will have to parse it with indexOf and substring.
let y = stringFromServer;
let a = y.indexOf('data:');
let b = y.indexOf('\"}',a);
let dataUrl = y.substring(a,b);

Here is my try
let sample = {"href":"about:blank#&executeFunction<-finishedStroke&&arguments<-{\"base64DataUrl\":\"data:image/png;base64,iVBORw0KGgoAAErkJggg==\"}&"}
let splitter = sample.href.split("<-")
console.log(JSON.parse(splitter[2].substring(0, splitter[2].length - 1))["base64DataUrl"]
)

Returning query fragments [closed]

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I have an url that looks like this:
https://example.com/?category=123&dk=sports&dk=groupcompanyinsider&dk=local&lang=en
Is it possible to return every dk parameter separately? (no matter if there will be 1 or 5 dk parameters) so i would get separately sports, groupcompanyinsider, local.
If its not possible maybe there is a way to return all of them in one string like dk=sports&dk=groupcompanyinsiderlocal&dk=local ?

You can use the built-in javascript class URLSearchParams for this.
You can then transform this into the string you want with string concatenation and a foreach.
const url = "https://example.com/?category=123&dk=sports&dk=groupcompanyinsider&dk=local&lang=en";
var params = new URLSearchParams(url);
var result = "";
// concatenate individual values of the 'dk' query parameter
params.getAll('dk').forEach(function (item) {
result += '&dk=' + item;
});
result = result.substr(1); // remove starting '&' from the result;
console.log(result);
The result should contain your desired string.

Find the string is XML or JSON or String using angular 2 [closed]

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I need to find my string is XML or JSON object or string, based on this response I will make the string looks pretty.
So for that, I need to identify what kind of object. Can anyone please help me to find a way to achieve this?
Thanks in advance.

try like this
function GetInputType(response) {
try {
//try to parse via json
a = JSON.parse(response);
return 'json type';
} catch(e) {
//try xml parsing
let parser = new DOMParser;
var xmlDoc = parser.parseFromString(response,"application/xml");
if(xmlDoc.documentElement.nodeName == "parsererror")
return 'string type';
else
return 'xml type';
}
}

How to do array from the string ? [closed]

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I have an adress such as https://stackoverflow.com/#/schedulePage/some/another , how can I make it to an array with elements after # ?

var urlToSplit = "https://stackoverflow.com/#/schedulePage/some/another"
var onlyAfterHash = urlToSplit.split("/#/")[1];
var result = onlyAfterHash.split("/");
console.log(result);

Use the split function
var str = "https://stackoverflow.com/#/schedulePage/some/another";
var res = str.split("#");

I think you just want something like this.First here I just split out the string by #, grab the second part of split result i.e index 1 then again splitting the result with / and finally filter out the empty string from the generated array.
var string = 'https://stackoverflow.com/#/schedulePage/some/another';
var result = string.split('#')[1].split('/');
var filtered = result.filter((entry)=>entry.trim() != '');
console.log(filtered);