Questions tagged as 'javascript'

Tagged questions
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cancelAnimationFrame does not clean my canvas

Inside this canvas <canvas id="canvas" class="canvas" width="300" height="300"></canvas> Have this feature var estado = false; var canvas = document.getElementById('canvas'); var ctx = canvas.getContext("2d"); function frame()...
asked by 30.11.2018 / 20:25
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Calculate Sum in real time with JS

Cordial Greeting. I hope you are well and can help me. I have 2 inputs and when you are typing, you change to a currency format: <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> &l...
asked by 29.11.2018 / 21:09
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I try to load 4 thousand records in a Datatable and it takes several seconds

My problem is that when loading the BD records in the datatable it takes several seconds, eh I saw that you can only show the data you need to see and from there make a request for the other data but I do not understand how does that my code is...
asked by 30.11.2018 / 22:03
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Tabcontrol with html and javascript

I put this example as a reference I have in .net data with a grid which I pass as a parameter to a textbox when I select a row, and my page is updated and the first one is selected as I can omit that. <!DOCTYPE html> <html> <hea...
asked by 07.12.2018 / 04:26
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OnKeyUp event in Js with setTimeOut

I would like to know if there is any way to do that some 5 seconds after I stop typing a certain code is executed, I currently use it in the keyUp event, but this is immediate. ex: I press the A key (I am waiting for 5 sec), but after 1 sec, I t...
asked by 07.12.2018 / 12:01
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Get URL Firebase Storage

I'm doing a web app which uploads images to Firebase Storage. The app uploads the images correctly but at the time of obtaining the URL of the image to download it gives me the following output: Code that uploads the image to Firebase S...
asked by 07.12.2018 / 12:09
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Can I use the Google maps directions app to trace the route between any two coordinates?

I am making a page that I will try to return application ... in which I want to calculate the distance and route to get from one point to the other ... as it is the case the people will be located in any place ... .. The Google Maps API allows t...
asked by 29.11.2018 / 20:34
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Grid DevExpress event change

I have this modal with a grid, the problem is that when I select a row. this function is executed repeatedly doing the same thing. @Html.DevExpress().GridView(settings => { settings.Name = "grid_ModalProductosProceso"; setti...
asked by 30.11.2018 / 14:41
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Select a certain number of Inputs from an option

search the forum but I did not find a solution, what I'm looking for is that from an option that has the numbers 1, 3 and 5 defined, you can select the same quantities in a list with inputs to send a form by mail, I appreciate the help <li&...
asked by 29.11.2018 / 20:56
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Dialogflow User permissions

I am working on a Dialogflow project where I need access to the data of the users who access my agent. I want to use at least the user's name to create a document with his name in Firebase firestore. I already know that I need permission to acce...
asked by 29.11.2018 / 10:07