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  1. I've seen this (and similar) code used to apply an SVG filter to an image. How do I use this code to apply an SVG filter to a canvas? The canvas' content may change often. <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <filter id="darkGreen"> <feColorMatrix type="matrix" values="0 0 0 0 0 0 0.5 0 0 0 0 0 0 0 0 0 0 0 0 1" /> </filter> </defs> <image xlink:href="(url to image)" width="" height="" filter="url(#darkGreen)" /> </svg> Thank you
  2. I do not know how to make cell phone browsers choose the smaller image, and the laptops/desktops choose the bigger image, while their resolutions are the same. I have the following script: <img sizes="(max-width: 479px) 479px, (max-width: 991px) 991px, 1400px" srcset="media/img/small.webp 479w, media/img/medium.webp 991w, media/img/big.webp 1400w" src="media/img/default.png"> From the above script, when the cell phone's resolution is, let's say 1080 x 1920 pixels, then the browser will choose
  3. 0 I do not know how to make cell phone browsers choose the smaller image, and the laptops/desktops choose the bigger image, while their resolutions are the same. I have the following script: <img sizes="(max-width: 479px) 479px, (max-width: 991px) 991px, 1400px" srcset="media/img/small.webp 479w, media/img/medium.webp 991w, media/img/big.webp 1400w" src="media/img/default.png"> From the above script, when the cell phone's resolution is, let's say 1080 x 1920
  4. https://www.w3schools.com/howto/howto_custom_select.asp The link above is a custom select dropdown. I'm trying to get each item in the dropdown go to a link. I've tried using; <body> Please select city : <select name="select-city" onchange="location = this.value;"> <option value="">Select-City</option> <option value="https://en.wikipedia.org/wiki/New_Delhi">New Delhi</option> <option value="https://en.wikipedia.org/wiki/New_York">New York</option> <option value="https://en.wikipedia.org/wiki/Ber
  5. Hello guys, I´m currently creating a website and have to use some kind of a switch button (in iOS-Style). I already implemented the switch button, however I want the user to switch with the button between two upcoming photo galleries. Because documentation in the www is lacking, I would need your support. Because I´m pretty unexperienced in website coding, I used the W3school switch button (https://www.w3schools.com/howto/howto_css_switch.asp) I hope you could help and I´m sorry for being such unexperienced but having high demands.
  6. I'm trying to write an article on my web site about special relativity. Does HTML5 provide a way to render one over the square root of an expression on a web page? The expression has superscripts and subscripts, which I know how to do. Thank you for your help. Jim Adrian
  7. I'd like my video to start playing automatically when the page is launched without sound just like on this page: [LINK REMOVED]. I've tried any possible jQuery/javascript/CSS option I could find online but I always end up with Google error that's blocking the video from autoplay unless there was an interaction. How did they do it in the link above?
  8. I have created a simple Web Page having a HTML form for the user's name and age details. I had HTML file linked with an asp file that displayed the user's name and age using action attribute xxx.asp. Upon running the code, first web page shows me a form to fill, let it be my page 1 and after finishing the form and clicking on submit button I am redirected to a new web page, consider it as page 2. Now What happens to page 1 after the submit button is clicked, is it stored somewhere or the memory space is freed for page 1. Wanted to know how page 1 works internally.
  9. I'm going through the HTML game module, and I found " var myleft = this.x; var myright = this.x + (this.width); var mytop = this.y; var mybottom = this.y + (this.height); " In https://www.w3schools.com/graphics/game_obstacles.asp Can someone please explain what points are myleft, myrightm mytop and mybottom on the component? I'm confused because aren't myleft and mytop the same point on the component? Please help. Thanks, Prakhar
  10. If somebody can explain this code like what does what il swish 15 euros. Here is the code its for my nav bar but i have a hard time explaining what everything does. <style> .dropbtn { background-color:black; color: white; padding: 16px; font-size: 16px; border: none; } .dropdown { left:77.005px; position: relative; display: inline-block; } .dropdown-content { display: none; position: absolute; background-color: lightgrey; min-wid
  11. I'm building a web page, and started with a simple layout: there is a banner and a menu at the top, and the welcome page after it. People may then select an item from the menu at the top or the image links at the main page, and go to other subpages. But the idea is that those subpages should be loaded in the area below the menu, the menu itself and the banner should remain in place, not reloaded each time the visitor navigates around. I have seen some instructions but they always rely in frames or frame-related tags. It has been made abundantly clear that those are not compatible with HTML5 an
  12. What would be the most efficient way to code on wordpress? Should I write directly on the platform or copy it from an editor? I am having a hard time on WP specially when adding tables as the code is all messed up (without spaces or lines). If you use WP, please help! Thank you, Damian
  13. <!DOCTYPE html> <html lang = "en"> <!--This is my first comment in my index page--> <head> <meta charset="utf-8"> <link rel="stylesheet" href="greentea.css"> <a href= "greentea.html"></a> </head> <header> <h1>Teaz Nuts</h1> </header> <!--This is the body of my page--> <body> <nav> &l
  14. <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title> </title> <link href="css/bootstrap-4.0.0.css" rel="stylesheet" type="text/css"> <link href="css/styles.css" rel="stylesheet" type="text/css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script> <script> $(document).ready(function() { var id = 1; $("#butsend").click(function() { var newid = id++; $("#table1").append('<tr valign="top" id="'+newid+'">\n\
  15. The file at this url contains exactly the code below, and the domain is SSL https://staging13.dgstesting.com/new2.html <!DOCTYPE html> <html> <head> <script> navigator.geolocation.getCurrentPosition(function(position){ document.body.innerHTML = position.coords.latitude; }, function(error){ document.body.innerHTML = error.message; }); </script> </head> <body> </body> </html> The problem: On chrome, edge beta (so basically chrome) and chrome on android, this code
  16. unable to understand why black image is getting, please check the code and assist in generating the optimised image from file input <html> <head> <script src="jquery-3.4.1.min.js"></script> <title>Image Optimization</title> </head> <body> <div> <input type="file" id="imgFile" accept="image/*" capture="user"> </div> <div id ="test"> <img id="optImg" alt="optmisied Image"> </div> </body> </html> <script> $("#imgFile").change(function(){ const File = this.files[0
  17. I'm referring to https://www.w3schools.com/howto/howto_js_form_steps.asp What I want to achieve, is to introduce a step where to select the required steps. As example: Imagine a form to insert the data of a person: Tab0: a transfer list with 3 elements: Name and date on the right tab, required; Driving License on the left tab to be selected only by people having a driver license Tab1 - Name: First and last name Tab2 - Date: Date of birth Tab3 - Driving license: Optional: Driving license # The sequence of pages should include Tab3 only if previousl
  18. Attention: W3Schools Forums members: It is baffling as to why the following Hypertext Markup Language ( HTML ) version 5 ( HTML5 ) code is not working: <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>The Holy Bible.</title> <style> <!-- div.container { --> <!-- width: 100%; --> <!-- border: 1px solid gray; --> <!-- } --> <!-- header, footer { --> <!-- padding: 1em; --> <!-- color: white; -->
  19. I am working with an HTML5 template that supports youtube video backgrounds in a DIV. When I scale the browser window to see how the responsivnes behaves, I notice that the videos crop left/right, top/bottom, depending on the aspect ratio of the DIV. For my purposes, I would need the videos only crop on the right and top only, so that the bottom left is always visible. As I am not a pro I have been doing a lot of trial and error on this, but cannot get it working. I actually need to have two classes available. One where the video scales from the bottom left and one where it
  20. I wanna know the correct form to use the HTML5 tags when i use BOOTSTRAP. we usually see that developers forget about semantic web and html5 tag like article and section where use BOOTSTRAP. aren´t necessary or how to use it.
  21. HI, I'm sure I've seen on a websites somewhere the ability to either select an option from a dropdown list or enter an alternative. Can anyone give me any pointers in how to achieve this? Thanks Phil
  22. PROBLEM ::: .navbar >:nth-child(3){margin:auto; } hover is not working in the media quires. Is there any other solution for this code? <!doctype html> <html> <head> <meta charset="utf-8"> <title>Untitled Document</title> <meta name="viewport" content="width=device-width,initial-scale=1"> <style> *{box-sizing: border-box;} .navbar { display: flex; background-color: #333; } .navbar > :nth-child(3){ margin-right: auto;
  23. Hi, I’m having a problem with the implementation of google maps within my phonegap build. I have this problem in the browser on my pc and on the Phone itself. When I have the code in isolation it works and shows a map but when I have it within the rest of the code nothing seem te happen. Please help me with this. <!doctype html> <html> <head> <title>Huisartspraktijk app</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <!-- /jquery links en scripts. NIET VERWIJDEREN!! --> <link
  24. Hi folks, it's my first post here and while I have been learning a lot from w3schools in the past (compliments!!), I am just about to familiarize myself with w3.css. For a start, I choose the architects template as basis for a project portfolio as joiner and just started to replace pictures etc. from the original template with my own stuff. However, I would like to use the HTML5 semantic layout (header, footer, aside...) as much as possible and the w3css tutorial also states that it's possible because the w3-* classes can be applied to whichever HTML element. So I tried to
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