Questions tagged as 'html5'

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How to prevent me from inserting myself when doing F5

I have the following situation. I'm doing a submit to a form, but when I refresh the page, I redo the insert of the data in the table. Searching in internet the solution that is given is that a redirect with header is made to the page,...
asked by 28.02.2018 / 23:34
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Problems with Media Screen CSS3

It was decided to download an HTML5 template and adapt it, at the time of editing we realized that there are sections that ignore the lower @media screen and only take the last one, that is, if I have one of 360px, another of 480px and one of 73...
asked by 17.02.2018 / 00:50
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CENTRAR LOGO OF MY WEB HTML5

I made my web in HTML and the logo remains unraveled. Here I leave the image to see what I mean. I need you to be centered in the circle. Here is the code <!-- Header --> <header id="header">...
asked by 16.02.2018 / 23:29
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PHP FORM ERROR

I ask you a question, when I click on send in my form, the page is reloaded and the email is not sent. Here is the .php file <?php require 'PHPMailerAutoload.php'; require 'class.smtp.php'; require 'class.phpmailer.php'; $mail = new PHP...
asked by 17.02.2018 / 00:22
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Scale Canvas Image

I have a 800x400 canvas, I'm painting on it a very small and pixelated images (5x5, 10x5, 7x5, 5x7, etc). When sending them to the canvas doing scaled [2, 2], [4, 4] etc. It is not done linearly and does not preserve the clarity of the pixels. H...
asked by 17.02.2018 / 22:40
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Download image file with canvas

I need help to put an image format to the file that I download with canvas, the whole process is done successfully unless you have downloaded the image appears as download without no format I would appreciate your giving me a hand. Html C...
asked by 13.02.2018 / 17:10
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Error: ClientRect is not defined PHP JQUERY and PHP

the order that loads my scripts <script type="text/javascript" src="../js/jquery-3.3.1.min.js"></script> <script type="text/javascript" src="../js/jquery.dataTables.min.js"></script> <script type="text/javasc...
asked by 07.03.2018 / 18:17
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How to make images retina display with jpg images?

Hi everyone, I'm trying to make images that are pleasing to the eye with this technology, so far I understand correct me if I'm wrong that in these screens requires a higher resolution so they do not look blurry I have several 800x600 images in...
asked by 07.03.2018 / 22:43
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download a file

Greetings I have 3 computers with different operating systems one MAC, Linux and Windows and one NAS all of these are within the same network inside my NAS I have a shared folder called "master_index" and there in an XLS called "FOR-ASC" -SGC-MA...
asked by 20.02.2018 / 18:02
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datatable does not support "\ r \ n" or remove line breaks in textarea

DATATABLE 10.11.16 does not work if a text field has "\r\n" line breaks says jason error $('#myTable').DataTable( { ajax: { url: '/api/Listar_notas.php', }, columns: [ ... ] } ); open some solution for this. O...
asked by 13.02.2018 / 03:21