javascript

[Solved] How can i get result from export module using async/await

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Return a promise from your config.js file. mongodb client supports promises directly, just do not pass the callback parameter and use then. config.js module.exports = (app) => { const mongo_client = require(‘mongodb’).MongoClient; const assert = require(‘assert’); const url=”mongodb://localhost:27017″; const db_name=”portfolio”; return mongo_client.connect(url).then(client => { assert.equal(null, err); console.log(‘Connection Successfully to Mongo’); return client.db(db_name); }); }; And … Read more

[Solved] How to make your checkbox work with your Jquery functionality?

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You want to initiate the download if at least two checkboxes are checked? In that case, try using this: $(document).ready(function() { $(“#download”).click(function() { var count = 0; if ($(‘#temperature’).prop(‘checked’)) count++; if ($(‘#illuminance’).prop(‘checked’)) count++; if ($(‘#button-state’).prop(‘checked’)) count++; if (count > 1) { window.location.href=”https://api.thingspeak.com/channels/899906/feeds.csv?start=2019-11-12%2019:11:12&end=2019-11-13%2019:11:13″; } }); }); 2 solved How to make your checkbox work with your … Read more

[Solved] Time if statement not working

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You’re comparing strings. That compares their characters, one by one from left-to-right, until it finds a difference, and then uses that difference as the result. Since “2” is > “0”, that string is greater than the other. You need to parse the dates and compare the result. Do not just use new Date(dateFormat) or similar, … Read more

[Solved] Using HTML and Javascript I want the solution [closed]

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You are new to the community and asked for very basic example. From next time onwards, please show us your work before seeking help. var checkbox = document.querySelector(‘.js-disableCurrentAddress’); var currentAddr = document.querySelector(‘.js-currentAddress’); checkbox.addEventListener(‘change’, handleDisable); function handleDisable() { if (checkbox.checked) { currentAddr.setAttribute(“disabled”, “disabled”); } else { currentAddr.removeAttribute(“disabled”, “disabled”); } } <input type=”text” class=”js-currentAddress” placeholder=”current”> <input type=”text” … Read more

[Solved] Can someone explain this piece of code to me

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It appears that variable is an array that stores references (URIs, or paths) to images, that is fed to the src attribute of an image element, <img>. The script simple does the following logic: When the function is fired, it increments index by 1 If index is equal to the number of images, you return … Read more

[Solved] Define Interface for function, for which I do not have access to the declaration

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I’m not sure if I understand the question properly, but here’s how you can declare an argument that is a function taking two arguments – any and string – and returning void (that’s what I think the type of the function should be when I look at your code): return function (boundTransportFn: (a: any, key: … Read more

[Solved] Pick the first letter and put it above the content group

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Fairly simple with jQuery – see the code comments for explanation. // shorthand for on document load $(function() { // a variable to store our current first letter var currentFirstLetter; // for every child of mylist $(‘.mylist’).children().each(function() { // take the first character of its content var thisLetter = $(this)[0].innerHTML.substr(0,1).toLowerCase(); // if its different to … Read more

[Solved] How can I extract an actual URL from a string? [duplicate]

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No need to write a regex when the ability to parse URLs already exist. MDN: Web technology for developers > See Web APIs > URL const url = new URL(“https://stackoverflow.com/questions/ask”); console.log(`${url.origin}`); // Includes port console.log(`${url.protocol}//${url.hostname}`); // Alternatively… 2 solved How can I extract an actual URL from a string? [duplicate]

[Solved] Type Error: Cannot read property ‘includes’ of undefined [closed]

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With the little information you give us, I would say that you do not manage the incrementation of your variable i. const arrStr = [“hello”, “asdf”, “dfa”] arrStr[0].includes(“hel”) // -> true arrStr[1].includes(“hel”) // -> false arrStr[2].includes(“hel”) // -> false arrStr[3].includes(“hel”) // -> cannot read property ‘includes’ of undefined If you look at the DCR’s answers … Read more

[Solved] Getting the count of unique values for elements with regex in datatable

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Here are 3 versions ES6 with fat arrows ES2015 with function Legacy JS which should run from IE8 or so const uniqueCount = […document.querySelectorAll(“td[id^=invNumbers]”)] .reduce((acc, cur) => { const val = cur.textContent; if (!acc.includes(val)) acc.push(val); return acc; }, []).length; console.log(uniqueCount) // no fat arrows => const uniqueCount1 = […document.querySelectorAll(“td[id^=invNumbers]”)] .reduce(function(acc, cur) { const val = … Read more

[Solved] Simple Javascript DOES not work as intended

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It has nothing to do with the page being properly loading or the dom not ready, it’s purely that you’re going to a whole new page and incorrectly thinking that you’re able to do things with it still. Your script is changing the page with window.location. Immediately after that line, the page changes and your … Read more