I am using the following javascript code to display the difference in percentage between two values. Which gives: 6.855069696391064 Then The problem is: If value B is higher than value A then i get a NaN, for instance; How can I overcome this issue? I thought about using Math.abs() Any suggestions? Answer I t…
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How do I pass variables and data from PHP to JavaScript?
Want to improve this post? Provide detailed answers to this question, including citations and an explanation of why your answer is correct. Answers without enough detail may be edited or deleted. I have a variable in PHP, and I need its value in my JavaScript code. How can I get my variable from PHP to JavaSc…
Reset variable when variable is 0 [closed]
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers. Closed 8 y…
Node.js synchronously loop or iterate over asynchronous statements
I want to do a for each loop but have it run synchronously. Each iteration of the loop will do an http.get call and that will return json for it to insert the values into a database. The problem is that the for loop runs asynchronously and that causes all of the http.gets to all run at once and my
Check if my website is open in another tab
I want to check with JavaScript if the user has already opened my website in another tab in their browser. It seems I cannot do that with pagevisibility… The only way I see is to use WebSocket based on a session cookie, and check if the client has more than one socket. But by this way, from current tab,…
Javascript: cancel or let an event continue?
My scenario deals with Kendo UI, but I think it probably applies to JavaScript generally, hence the JavaScript tag. I have a Kendo scheduler with the edit event option set to functionA. In functionA, I create a Kendo window (basically a modal) that asks the user a question; in one case the edit event should c…
Socket.io – listen events in separate files in node.js
For example my idea is: File1.js File2.js This code is for a node server, will I have problems with this code? Answer Nope, just use the same “io” object. File1.js File2.js app.js index.html
How to format Number to Currency without decimal point in JavaScript?
the display alert should be 2,145,523 Anyone can help me? Answer Try this:
Get a cookie value (javascript)
so I am new to Javascript and I am attempting to get a cookie value to keep track of a test. I have six questions and when a question is finished I increment “counter” up 1 value, this way if the user loses connection while on question four the counter would be at four. Then when they reconnect I …
Google Docs Spreadsheet to JSON
I’ve seen numerous articles on this but they seem outdated, for instance none of the Google Docs Spreadsheet urls has key parameter. I read this as well: JSON data from google spreadsheet Then I read this to access data https://developers.google.com/gdata/samples/spreadsheet_sample My spreadsheet exists…