I am currently working on a series of JavaScript tests available at js-assessment
One of the tasks states:
it("you should be able to find all occurrences of an item in an array", function() {
var result = answers.findAllOccurrences('abcdefabc'.split(''), 'a');
expect(result.join(' ')).to.be('0 6');
});
I am confused about the '0 6' result provided. The task requires finding occurrences of 'a', but there are only two 'a's in that array.
I am not familiar with the exact implementation of findAllOccurrences, but based on the output, it seems to be carrying out the following steps:
It requires an Array and a String as input. The function then returns an Array containing the indices where the specified String occurs.
'abcdefabc'.split('') //=> ["a", "b", "c", ...]findAllOccurrences
The function findAllOccurrences locates occurrences of "a" at the first (index: 0) and seventh (index: 6) positions within this input Array, resulting in: [0, 6]
[0, 6].join(" ") will produce "0 6"
My NodeJS server sends notifications to clients when certain actions are performed, such as deleting a row from a grid. Socket.io broadcasts this information to all connected clients. In the example of deleting a row, one approach could be adding an `acti ...
My code is supposed to open a new window that goes from the login window to the main menu, module, reports, and finally the report name. The report name should be opened in the next tab. Issue: The report name is not opening in a new tab; it's openin ...
Hey there, I've got a list of products that can be selected using the Ctrl key. $(parentSelector).on("click", function (evnt) { evnt.stopImmediatePropagation(); var item = $(evnt.delegateTarget) ...
When I use telnet from the Windows command line, everything works smoothly: > telnet telehack.com (... wait until a '.' appears) . login username? example password? (examplepass) * * * * * * * Logged... (...) @ (This is the prompt when you ...
I have been developing an app that involves using databases to add items for users based on their user ID, which is their username. However, whenever I attempt to add an item, I encounter an error that I can't seem to troubleshoot. The error message r ...
I am currently working on a complex graph that consists of around 150 nodes using D3 Javascript. The concept behind it is quite intriguing: Each node is interconnected with 100 other nodes. Out of these 100 nodes, 49 are further linked to another set of ...
Why do tags appear when I input xmlhttp.responseText into my textbox? It displays <!DOCTYPE html><html><body></body></html> along with the desired content. Is there a way to prevent the tags from being displayed? Here is the ...
I'm facing an issue with my jQuery code where the .off('click') method doesn't seem to be working. I've tried removing the event binding from '.reveal-menu', but it's not working as expected. The initial animation wo ...
Currently, I am parsing a .json file and displaying all available options in a select dropdown menu: <div bo-switch-when="dropdown"> <fieldset> <select ng-options="options.text for option in question.body.options" ng-model="question ...
I'm new to using node/npm and encountering an issue when attempting to start an npm script. Every time I try to execute a simple script like the one below, I get the error message "bin is not recognized as an internal or external command." I have suc ...
It seems like the issue lies in the timing rather than being related to asynchronous operations. I'm currently iterating through an object and displaying a list of items. One of the values requires calculation using a method. While the direct values ...
I require the ability to transfer files from one cloud service to another using Azure Functions running Node. In order to do this, I have installed the necessary packages (axios, form-data, xmlhttprequest) and am coding in VSCode. However, when dealing wi ...
Here is the code snippet along with the variable 'polygon': var directionsDisplay; var directionsService = new google.maps.DirectionsService(); var map; var bermudaTriangle; var directionsPoints; var example; var rez; function initialize() { ...
I am attempting to create an interactive feature where clicking on any image will either reveal a clear version of the picture if it is blurred, or blur the picture if it is clear. The current issue I am facing is that when I click on a blurred image, it ...
When working with a component that involves drawing a canvas chart, I encountered an issue. Upon initializing the component for the first time, everything works fine. However, if I navigate away from the component and return to it later, document.getElemen ...
Currently, I am in the process of setting up a page that allows users to upload a txt file (specifically a log file generated by another program) and then modify the text as needed. Initially, my goal is to simply console.log the text, but eventually, I pl ...
How should we approach utilizing or observing parent @Output() event emitters in child components? For instance, in this demo, the child component utilizes the @Output onGreetingChange as shown below: <app-greeting [greeting]="onGreetingChange | a ...
In my scenario, I have created a form that includes indexed input fields for username and level: <form> <table> <tr class="trToClone"> <td> <label>Username:</label> <input type="text" name="usernam ...
Is there a way to determine the width of elements located before an element when it is hovered over? I attempted to achieve this using the following code: $('ul li').hover(function() { $(this).prevAll().each(function() { var margin = $(this ...
When I send an ajax request, it works fine in the browser but returns an internal error when sent within a Cordova APK. Upon comparing the headers, I noticed that the only difference is in the ORIGIN: The one not working has origin: file:// POST 500 (In ...