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JOHN SWANA

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How to get user's ip address in JavaScript

An IP address is a unique numerical label given to a computer when connected to a network; ipify.org is a free service that retrieves IP addresses in JSON format fetch('https://api.ipify. org ?format=json') .then(response => response.json()) .then(response => console.log(JSON.stringify(response))) // response {"ip":"--.---.---.---"} In nodejs you can use a package node-fetch Install it by typing; npm i node-fetch Or using curl, in your terminal type; curl 'https://api6.ipify.org?format=json' // response {"ip":"--.---.---.---"}
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Hello world application in Kotlin

Kotlin Hello World Application To get started open your editor and type the snippet of code below fun main() {     println("Hello, World!") } in kotlin main is the entry point function of an application fun keyword is used for declaring functions it acts like function does in JavaScript. Compile your application into jar kotlinc hello.kt -include-runtime -d hello.jar Execute your application java -jar hello.jar If everything went well you should see "Hello World" output from your terminal
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How to build a twitter retweet bot using JavaScript

I'm sharing the code of my tweeter bot called ' JavaScript bot ' I forked the original source code from a certain github repository written in nodejs the bot retweets a giver hashTag at a specified time interval You can use a twitter bot to promote an interest or a campaign unlike Facebook twitter is more tolerant on automated accounts I used to build Facebook automated accounts which were posting user friendly comments on my Facebook friends posts with no success few months down the line Facebook suspended my account until then i decided to stop using Facebook at all And twitter is just the right platform for this kind of thing. For this bot to work you'll simply need an APIs key and a secret Twitter doesn't need waiting the long verification process as of 2020 I created my developer account and almost instantaneously my account got approved. The twitter hard limit on the number of retweets per day is 1000; clone git repository using the command; git clone ...
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How to wait for a promise within a loop block

JavaScript promises enable developers to write asynchronous applications in JavaScript Loops are ways of iterating elements For instance doing an asynchronous task within a for loop can be done as follows; Note that lag is used to emulate some delay. const items = [1, 2, 3, 4] const lag = async (delay) => {     return new Promise((resolve) =>         setTimeout(() => res(`${delay / 1000} sec`), delay)) } items.forEach(async (item) => {     const seconds = await lag(1000 * item)     console.log(seconds) }) expected output 1 sec 2 sec 3 sec 4 sec After running the code above every second some text was printed
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Object assign in JavaScript

Object assign in JavaScript Object assign is a static method of JavaScript Object global. Object assign is mainly used for merging two or more objects, where keys match Object assign overwrites one value of an object with the corresponding value of the same key in the second object. Example usage of object assign; const max = {     name: 'max',   type: 'dog',     bread: 'fluffy' } Given a situation where you want to derive a new pet of a certain name you will not need to redefine the whole pet structure instead just add or replaced the characteristics of the pet to that of your desire; const khloe = Object.assign(max, {   name: 'khloe'   type: 'cat',   color: 'blue' }) // output after running the code above on a JavaScript engine; {     "name": "khloe",     "type": "kitty",     "bread": "fluffy",     "color": "blue" } You can notice that ...
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