Do Repeated string literals in the JavaSript codebase increase the final file size? Yes, they do. Does it matter? Not for the backend applications, but for frontend applications – and anything that contributes towards them – it does. For example, npm packages and directly loaded scripts, server-side rendered web applications, and SPAs such as Angular, React, and Vue.
[Read More]JavaScript SDK
This post discusses SDK, JavaScript/Typescript SDK, its types, benefits, and drawbacks.
[Read More]JavaScript: Find if the String Has a Particular Case
Helper methods to tell if the case of the string is camel, snake, kebab, upper, lower, or start.
Instead of writing our own logic to determine if the given string is of a particular case or not, we can write a helper method that acts as a wrapper, in which we compare the original string with the one returned by lodash method, and return true or false. The wrapper is a good way to pass on the responsibility of correct logic to lodash, a thoroughly tested library.
[Read More]Replace All Keys of Deeply Nested Objects or Array of Objects in JavaScript
Change the case of object keys recursively to camel, snake, kebab, upper, lower, and start. Or modify in another way.
For a deeply nested object or array of objects, we might want to replace all the keys in some way, such as modifying their case (camel case, snake case, etc.) or adding an underscore at the start of each key or on both sides. Or we may like to change the keys in any other way.
[Read More]Restrict Content for Users of Specific Countries With JavaScript Only
A browser firewall without any backend!
As I have shown in a previous post, we can find the country of the user on the browser with JavaScript only. Using this information, you can restrict your site content for users belonging to specific countries.
[Read More]Track Number of User Visits With JavaScript Local Storage
And show personalized content on browser based on data
With the help of the browser’s LocalStorage, we can keep track of the number of visits of a user on the website or a particular webpage. Based on this data, customized alerts, messages or information can be shown to the user.
[Read More]React JS Render Form With Dynamic Conditional Fields
Show or hide based on the parent field value
In the last post I showed how can we plot a form whose data is all dynamic, coming from a backend API. Continuing from there, say we have again a totally dynamic set of fields coming from a backend API. It has some fields that are conditionally linked to another field.
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React JS Render Form With Dynamic Data From Backend API
including field validations
We need to plot a form whose entire fields are coming from the backend. Since the fields are not known in advance, we cannot add them statically. The data about each field, such as its id to save with, name, validations, etc. all comes in the API response too.
For the given scenario, I have used React Hook Form. The demo and example code for a dynamic questionnaire is shared below.
[Read More]Exclude Yourself From Google Analytics Without Filtering IP Addresses or Using Extensions
Including localhost calls. Works regardless of location, browser, or device.
When you visit your own blog or website, Google Analytics still tracks it as a view, which kind of corrupt your stats a little. If you want to check your site and keep the analytics data clean and legitimate, you must somehow exclude yourself from all the visits on all the pages.
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JavaScript Find Total Time Duration
Excluding overlapping and idle times
Say we have a an array of objects with start and end times in each. This could be anything, ranging from work experience (the way LinkedIn shows per job), to education, to sports career. We want to sum all these small experiences, excluding overlapping and idle times, and give out the total duration, which can further be converted into years, months, or days.
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