I wanted to be able to make available some examples of the Kendo grid when asking questions here. I have put the most basic one here, but nothing shows up. The code is: Should this be possible, have I missed something? (The sample runs locally). Answer You just need to change the way that the scripts are incl…
Tag: javascript
How do I make a “public static field” in an ES6 class?
I’m making a Javascript class and I’d like to have a public static field like in Java. This is the relevant code: This is the error I get: It looks like ES6 modules don’t allow this. Is there a way to get the desired behavior or do I have to write a getter? Answer You make “public stat…
Javascript Coin changing / Change making algorithm
So I’ve been trying to create a program in Javascript/jQuery that splits an amount of money into the smallest amount of dollar bills. So far the program only works with one bill, and I’m not too sure how to implement the rest and need a push in the right direction here. If I run this with money = …
MD5 hash of a file using javascript
I have to upload a file from the front end and calculate the md5 hash of the file. I tried to use crypto.js to generate the md5 but for images it is giving me wrong md5. I saw a website called onlinemd5.com and it is exactly what I need. Can anyone help me how to calculate the md5 hash of
adjust console.log behaviour of custom object
is there any way to influence what console.log gives out custom objects? I tried to overwrite the customObject.prototype.toString method, that did not work though. Any ideas? Answer In node.js, console.log calls util.inspect on each argument without a formatting placeholder. So if you define an inspect(depth,…
HttpPostedfileBase is null using jQuery Ajax
I have problem with uploading file In Asp.net Mvc. First of all I should use Ajax to pass the upload file value. In javascript I have model that I fill it, When I check it with debugger is correctly fill the object, but when I send this model to server (Controller ) The httpPostedfileBase value is Always null…
Mongoose auto increment
According to this mongodb article it is possible to auto increment a field and I would like the use the counters collection way. The problem with that example is that I don’t have thousands of people typing the data in the database using the mongo console. Instead I am trying to use mongoose. So my sche…
Understanding unique keys for array children in React.js
I’m building a React component that accepts a JSON data source and creates a sortable table. Each of the dynamic data rows has a unique key assigned to it but I’m still getting an error of: Each child in an array should have a unique “key” prop. Check the render method of TableComponen…
Check if there’s some text inside an element
I am creating an If…Else statement and need to check if the element has innerHTML / textContent. Like this: So, how do I do that using Javascript? Please, help! UPD! I have dynamically changing content, and seems not working after I put some text inside my < span >. I mean it still thinks the <…
Sorting multiple arrays based on one
I have 2 arrays: the first one contains a list of score numbers, and the second contains a list of countries with the same number of elements. Each country is linked with its proper score during the input. So, let’s say the input arrays are the following: I need the following output: A possible solution…