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How load two value via one parameter in function [closed]

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is it possible to read two different values over one parameter in a function? I need to load two values in one parameter into a function.
Thank you for your help

Yes, it's possible. Simplest example:
function test(params) {
return params.first + params.second;
}
console.log(test({
first: 3,
second: 4
}));
If you care about the names, then:
function test(params) {
var {first, second} = params;
return first + second;
}
console.log(test({
first: 3,
second: 4
}));

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.

nodejs safest path and file handling [closed]

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what security measures need to be taken when there's file access involved from client.
For instance they could use ../ to get access to root directory while we have path related functions involved.
What's the safest way to write path related code?

1) First check Poison Null bytes
if (filename.indexOf('\0') !== -1) {
return respond('That was evil.');
}
2) Whitelisting
if (!/^[a-z0-9]+$/.test(filename)) {
return respond('illegal character');
}
3) Preventing Directory Traversal
var rootDirectory = '/var/www/';
var path = require('path');
var filename = path.join(rootDirectory, userSuppliedFilename);
if (filename.indexOf(rootDirectory) !== 0) {
return respond('trying to sneak out of the web root?');
}
Reference:

Clean up if statement Javascript [closed]

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I do have jQuery and wouldn't mind using it but here's the code I would like to clean up:
if (parent.uglyChild.uglyChild.uglyChild.uglyChild.data == null) {
parent.uglyChild.uglyChild.uglyChild.uglyChild.data = new app.newData();
}
The only way I know how to clean it up is:
var data = parent.uglyChild.uglyChild.uglyChild.uglyChild.data;
if (data == null) { data = new app.newData()}
I have always wondered if there was a way to do something like:
parent.uglyChild.data = parent.uglyChild.data.isNull ? return : new app.newData();
I can't wait to see the shorthand tricks you guys know! :)

You could do something like
var ugly = parent.uglyChild.uglyChild.uglyChild.uglyChild;
ugly.data == null && (ugly.data = value)

you can cache the nearest object to avoid repetition, thanks to JS's leaky assignments:
if ( (x=parent.uglyChild.uglyChild.uglyChild.uglyChild).data == null) {
x.data = value;
}

If you want to use the ternary operator, you could always reassign the value.
parent.uglyChild.data = (parent.uglyChild.data == null) ? null : value;

Comparing string to a list in javascript [closed]

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I have a list of car models that are in the list as Chevrolet,Ford,BMW, so I enacted this code on them.
cars.getMakes() returns a list with the names mentioned above and they are formatted as such.
cars.getAllModels() returns a similar list with just the car model names.
make is a single string that is either a model name or make name. Depends on users input.
I want to test to see if what the user put in actually exists in my predetermined lists.
if it does; true. If not; False.
function makeCheck(make) {
var models = cars.getAllModels();
var makes = cars.getMakes();
if (make == makes[make]) {
return true;
} else {
return false;
}
}

If you want to check that the variable make passed to the function is in the list of valid makes:
function makeCheck(make) {
var makes = cars.getMakes();
return (makes.indexOf(make) != -1);
}