Multiple job opportunities.
One code challenge.
Get rid of repetitive hiring processes for all the positions you apply to, and access many job offers by taking a single real-world assessment.
Less server interaction: We can validate user input before sending the page. That reduces server traffic and load.
Immediate feedback: users don’t have to wait to see if they have entered data incorrectly.
Richer interfaces: we can include items like drag-and-drop components or sliders to improve the user experience.
BigInt: used to store numbers which are above the limitation of the Number data type. Is represented by adding “n” to an integer literal.
Boolean: it represents a logical entity (true or false), used for conditional testing.
Null: It represents an invalid or non-existent value.
Number: it represents a number, with or without decimals.
Object: it is used to store a collection of data.
String: it represents a series of characters. A string can be represented using a single (') or a double (“) quote.
Symbol: it is used to store an anonymous and unique value.
Undefined: it represents a variable that has been declared but not assigned.
Yes, it is a case-sensitive language. The language keywords, variables, function names, and any other identifiers must always be typed taking capitalization into account.
What does the ‘This’ operator do?
Explain what a Callback is
When a variable defined outside the current scope is accessed from within some inner scope, a closure is created. It gives us access to an outer function’s scope from an inner function.
Closures are created every time a function is defined. So, when we define a function inside another function and expose it, a closure appears.
• Global: then, the variable is visible everywhere in the code.
• Local: the variable will be visible within a function where it is defined.
Therefore, we can use that string whenever we need to access the cookie. For instance, we can use the split() function to separate the string into key and values.
reverse(): reverses the order of the elements of an array.
push():adds one or more elements to the end of an array and returns the new length of the array.
pop():removes the last element from an array and returns that element.
length(): returns the length of the string.
indexOf(): returns the index within the calling string object of the first occurrence of the specified value.
forEach(): calls a function for each element in the array.
Concat(): joins two or more strings.
CharAt(): returns the character at the specified index.
getElementById(‘idname’): Returns an element by its ID name
getElementsByClass(‘classname’): Returns all the elements from a given class name.
getElementsByTagName(‘tagname’): Returns all the elements included in the tag name.
querySelector(): it takes a CSS style selector and gives the first selected element.
Const: the const function does not allow them to modify the object. When the function is declared const, it can be called on any type of object.
Let: it indicates that the variable may be reassigned (like in a counter in a loop), and also let us know that the variable will be used in the block it’s defined in.
Explain the difference between null and undefined
If a variable has been declared but has not yet been assigned a value, it is undefined. Meanwhile, null is an assignment value as a representation of no value. Undefined and null are also two distinct types: undefined is a type, while null is an object.
Explain the difference between undeclared and undefined
If a variable has not been declared in a program, it is undeclared. So, if we try to read the value of an undeclared variable, a runtime error appears.
On the other hand, a variable is undefined when we had declared, but no value had been given. So, when the program read an undefined variable, its value is also undefined.
Explain the difference between local and session storage
In local storage, data is not sent back to the server for every HTTP request, reducing the traffic between client and server. Data will remain until cleared, through settings or by a program.
Session storage is similar, but the data stored in the session gets cleared when the page session ends (when the browser is closed, for example).
Event bubbling is when an event occurs in an element inside another element, and both elements have a handle for that event. It is a way of event propagation in the HTML DOM API: the event is first detected and handled by the innermost element and then passed to outer elements.
We should use the parseInt() function. It takes as the first parameter the string to be converted, and as the second the base of the given string.
1 parseInt("4F", 16)
Strict mode helps to do better error-checking in our code since in that mode we cannot use implicitly declared variables, add a property to an object that is not extensible, or assign a value to a read-only property.
To enable strict mode, we just have to write “use strict” at the beginning of the file, program, or function.
Pending: is the initial state of promise, where the promise has neither been fulfilled nor been rejected.
Fulfilled: when the promise has been fulfilled and the asynchronous operation has been completed.
Rejected: the promise has been rejected for some reason and the asynchronous operation has failed.
Settled: the promise has been either rejected or fulfilled.
Multi-apply: How to apply to many job opportunities with one single Challenge
We have managed to get most of the companies we collaborate with to adopt our Rviewer challenges in their validation process as an official test.
And here's the bomb: This allows us to offer you, at last, Multi-Apply: with a single technical challenge you will be able to access more than one job offer. Yes, you heard it right: MANY job opportunities by taking a SINGLE code challenge.