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  1. NOTE: The rooster has come home to rest. BACKGROUND: My recent ventures in SESSION variables and AJAX calls has opened up whole new worlds in the life of this unaspiring, inspired web developer. So, far I have used each to satisfy different, but similar tasks -- namely, fill differently the same section of my podcast host page with data from the same data base using both external ($_GET and $_SESSION variables) and internal $.ajax( ) triggers. It is now time to combine the results of these two procedures in the achievement of a third task. At the top of my podcast host page is a
  2. Hello everyone, my name is Miguel, I am new to the fantastic world of programming and I have many doubts. I just want to learn and I'm doing it self-taught, so I have to ask a lot of questions. Thank you very much and I hope it does not become annoying for the members of this forum. Regards and sorry for my spelling, I have to make use of the Google translator. Thank you
  3. function createCookie(name,value,days) { var expires = ""; if (days) { var date = new Date(); date.setTime(date.getTime() + (days*24*60*60*1000)); expires = "; expires=" + date.toUTCString(); } document.cookie = name + "=" + escape(value) + expires + "; path=/"; } function user_login() { var uname = document.getElementById('input-loginname-homepage').value; var psw = document.getElementById('input-loginpassword-homepage').value; var xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (this.readyState == 4 && this.s
  4. BACKGROUND: I am loading dynamic HTML and its content via the success function of a $.ajax( ) call. After it has been loaded I would like to give the user the opportunity to manipulate it using Javascript. In order to achieve my goal I foresee the use of both Javascript and CSS. QUESTION: Where and when in the document should the Javascript be entered? For example, in the $(document).ready() function? Please explain why.
  5. Hi, I've made an html page that invokes a function automatically ( using the parentheses b/4 & after ) to make a table from an XML file. It worked great with a little help from you guys. I then made another one to read a different XML file and that worked great. I want to put both tables on the same page so I made a couple of 'divs' and positioned each in a column formation. That part seems to work well, but I am calling the 2 functions to make the tables consecutively and it doesn't work as I wanted. When I open this file in a browser, as it is here, I get only the second table in
  6. Hello. I made a WordPress plugin with a JQuery-AJAX/JSON code in a php file like this: $(document).ready(function(){ $.post(“/wp-content/plugins/SLMS/UserRecord.php”, { saveUserBtn: “Save”, FName: fname, LName: lname, UNumber: unumber, address: address, contact: contact, email: email }, function(data, status){ document.getElementById(‘userr-page-notice’).innerHTML = data; if(data.includes(“New record saved.”)) { document.getElementById(“userRecord”).reset(); } }); }); /** end of code */ I also notice that any user can view my javascript code with their own browser. I also noticed tha
  7. BACKGROUND: I have created a PHP routine that gathers data from a MySQL database. The data that it gathers depends on the value of an HTTP request that uses the $_GET superglobal as its transfer mechanism. The routine further organizes the retrieved information into a nested array such that each element of the array corresponds to a different table row, and each element of each nested array corresponds to a subset of the table fields. Once the nested array has been completed the json_encode() function converts the array into a JSON string and readies it for transport. The PHP <
  8. Hi! I'm Vincent from Matters. I am transitioning from PHP to JavaScript. I wanted to give back to the community so I wrote an article about it: https://blog.matters.tech/migrating-from-php-to-javascript-with-node-js-155534498b58 I hope it will be useful to some! Feedback warmly welcome https://twitter.com/cold_lestat
  9. Loading time of my website( interpool ) is comparatively high. results are showing that around 29% of viewers will lose. loading time increase because of javascript and CSS rendering. If i block some of the javascript and css does it affect in search. what is the simple remedy.
  10. Hello everyone I want to make a login page and I want to connect it with loptop or mobile fingerprint scanner and people can login with their fingerprint. Can anyone help me what should I do?
  11. Hello world! First post. I am trying to get some code working to my liking that I found on the internet. I am in CS1 programming class but I do not know enough about Javascript to fix it. I am determined to finish this however. I would appreciate any help I can get. Here is the code: <!doctype html> <html> <head> <title>Security/BabyCam Revisited</title> <style type="text/css"> #container { /* center the content */ margin: 0 auto; text-align: center; } </style> </head> <body> <div id="container"> &
  12. Dear W3schools community, I want to check if a required input is empty (has more then 0 characters). You guys have any idea what I'm doing wrong? Thanks in advance! If there is no character in input (id="vname") I still get a red "bar" Here's my code: function foobar() { var vname = document.getElementById('vname').value; if (vname.length > 0 && vname != '' && vname != null) { document.getElementById('contact-response').style.color = 'green'; document.getElementById('contact-response').innerHTML = "foo"; } else { docum
  13. I am displaying data from one page in another page in the following way: <script> $(document).ready(function(){ $( "#2017" ).load( "data.html .2017" ); $( "#2016" ).load( "data.html .2016" ); }); </script> <div id="2017"></div> <div id="2016"></div> ...BUT I also need to be able to hide (onload) certain div classes from within the linked file... <script> $(document).ready(function(){ $('.private-files').hide(); }); </script> I know that the code above will hide divs by class
  14. Good day everyone! I will admit right off the hop that I know very little about javascript programming but I hope that with your help, I can learn something today. I've looked on w3 and elsewhere to find my answer but I have not been successful. I think what I'm trying to do is simple... Using w3.css, I am trying to create a navigation menu that will include more than one dropdown menu. I have the menu working to a point. Right now if I click on the three links with sub menus, the sub menus will display. However, they do not 'hide' unless I click on the top-menu link. That is, if I cli
  15. Estoy subiendo un archivo csv en una página llamada procesar, el problema es que me hace un POST y me envía a otra página y me muestra el resultado de ¡La importación del archivo se subió satisfactoriamente!, pero yo necesito que eso me lo muestre en la misma página. Éste es el código que tengo. <script type="text/javascript" > $(function(){ $("#btnEnviar").click(function(){ $("#cuerpoPagina").load('procesar.php',$("#frmAsignar").serialize()); }) }); function subirArchivoExcel() { if (document.frm
  16. The intro to w3.css says "Uses standard CSS only (No jQuery or JavaScript library)" which is technically true but a bit misleading. Javascript must be enabled in the user's browser in order to use useful features like modal popups. What's the big deal? Someone might create a website using a modal popup for users to register or purchase things, only to find that visitors using screen readers because they're visually impaired can no longer participate or buy things. So the site is no longer fully accessible, which is illegal in some countries and some class action lawsuits have already happ
  17. Here my question is how to print/display the numbers from pressed buttons(as shown in figure) using JavaScript. However, here I am working on a device and we have to control it from JavaScript. Below I have mentioned my code(.js) snippet:// Numbers functionfunction Numbers(cmd){System.Print("Command Sent is: "+cmd);var num = cmd;System.Print("Button pressed is: "+num);}// Displaying Numbersfunction Display(){Numbers(num);num.toString();dbgPrint("Displaying number: " + num);}And parameters for this function I am passing from some other file(.xml) as standard.<function name="Display" export="
  18. Dear W3Schools-Community, There is something not working with my code right here. It should be mentioned that I am fairly new to using JavaScript. Here is my HTML code (stripped down to the essential parts): <!DOCTYPE html> <html lang="de"> <head> <script type="text/javascript"> function change_content(contentname) { if (document.getElementById(contentname).className = 'notactive') { document.getElementById('login').className = 'notactive'; document.getElementById('news').className = 'notactive'; document.getElementById('info').classNa
  19. Hi, I have written javascript code as below to make in HmacSHA256 but i need in RSASHA256 to generate signature, can you plz help. public key= -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdlatRjRjogo3WojgGHFHYLugdUWAY9iR3fy4arWNA1KoS8kVw33cJibXr8bvwUAUparCwlvdbH6dvEOfou0/gCFQsHUfQrSDv+MuSUMAe8jzKE4qW+jK+xQU9a03GUnKHkkle+Q0pX/g6jXZ7r1/xAK5Do2kQ+X5xK9cipRgEKwIDAQAB -----END PUBLIC KEY----- Private Key= -----BEGIN RSA PRIVATE KEY----- MIICWwIBAAKBgQDdlatRjRjogo3WojgGHFHYLugdUWAY9iR3fy4arWNA1KoS8kVw33cJibXr8bvwUAUparCwlvdbH6dvEOfou0/gCFQsHUfQrSDv+MuSUMA
  20. Hi, I have written javascript code as below to make in HmacSHA256 but i need in RSASHA256 to generate signature, can you plz help. public key= -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDdlatRjRjogo3WojgGHFHYLugdUWAY9iR3fy4arWNA1KoS8kVw33cJibXr8bvwUAUparCwlvdbH6dvEOfou0/gCFQsHUfQrSDv+MuSUMAe8jzKE4qW+jK+xQU9a03GUnKHkkle+Q0pX/g6jXZ7r1/xAK5Do2kQ+X5xK9cipRgEKwIDAQAB -----END PUBLIC KEY----- Private Key= -----BEGIN RSA PRIVATE KEY----- MIICWwIBAAKBgQDdlatRjRjogo3WojgGHFHYLugdUWAY9iR3fy4arWNA1KoS8kVw33cJibXr8bvwUAUparCwlvdbH6dvEOfou0/gCFQsHUfQrSDv+MuSUMA
  21. I am attempting to use a meta tag to redirect someone if they attempt to go to a specified number of pages. Problem is these pages are pdf files so I cant really add some code to that. Anyway I decided to use a javascript file and import React and ReactDOM from the JS Library. I simply don't know what I am doing wrong with this code though. If anyone could help that would be amazing! import React from 'react'; import ReactDOM from 'react-dom'; String[] Directory = {"A", "Bunch", "Of", "Website", "Directories", "Here"}; if (window.location.href = "Website name here" + Directory)) { Rea
  22. Hello everyone, I am trying to make my first website and have been going through some javascript examples on W3S to learn how to make a website more interactive. I have been looking at the code for modal login and signup forms found here: https://www.w3schools.com/howto/howto_css_login_form.asp and here: https://www.w3schools.com/howto/howto_css_signup_form.asp The HTML and CSS are easy enough to understand I think, but I seem to be having some trouble with the JS aspect of the tutorials. What I have done is simply add both forms to an HTML document, linked to the s
  23. I have created some js file to change the height of my header when a user scrolls through it. The goal is that the header starts at 90% of the window height (90vh in css) when the page is loaded and it shrinks down to 80px when a user starts scrolling down (if the user goes back to the top of the page it will again grow to 90%). Also I want a gif playing in the back behind the header. The code works, but when you scroll down/up it seems to be lagging, but I would like it to fluently do these actions. Can anyone can give me some hints on how to improve the speed? Here is my code for t
  24. I've got a function that create mesh when you click on another. On the click, 2 or 3 mesh are created and go to their positions. Know i would like to do the reverse function : when the mesh are deployed, and you click anoter time on the mesh, the previously created mesh go back and are removed from the scene. Here is my first function : function sortiSphere(element, obj) { var matStdParams = { roughness: 1, metalness: 0.8, color: element.group, emissive: element.group, emissiveIntensity: 0.5 }; var sphereMaterial2 = new TH
  25. My suggestion is to add HTML DOM element object outerHTML attribute for the JavaScript reference. It seems that most, if not all, the browsers support this attribute. In addition, it is important and basic attribute that new JavaScript developers should know about.
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