Posts by Sam • 79,597 points
3,121 posts
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viewsA: Materializecss: image without margin
I believe that the problem is not in the images, but in the divs. Create a class .no-margin in his <style> and add her to div mother. Nas divs daughters you add to class .no-padding native of…
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answers2552
viewsA: How to clear input fields after Ubmit?
A solution would be as I put in the diagram below: receive the form via POST, do what should be done, create a SESSION as a result of the process and then make a redirection to the page itself. This…
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answers2375
viewsA: Should I show generic error messages like, wrong password or user, or specific messages?
Yes, this is to help protect the data (and the account). Not because it is necessarily easier, but because it contributes a little more to safety. Not revealing which data is incorrect is a way to…
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answers4874
viewsQ: Is there a programming language in Portuguese? If so, what are they applied to?
As we are used to, "all" programming languages (or almost all, I don’t know) follow the American standard, both in the English language (for, while, if, class, date) how much in date/time and…
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answers143
viewsA: Hide an image when a web page is loaded on a mobile device
You can do this by using a function that checks if it is mobile device. Loop for to get the index of <img> for his src. Create any variable (elem_src) with the URL of the image you want to…
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answers130
viewsA: How to identify a device?
The following function, created from a response in Soen, returns true if the device is mobile (smartphone, tablet) and false (desktop, laptop). I tested on some devices and all were satisfactory,…
javascriptanswered Sam 79,597 -
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answer361
viewsQ: Problem sending email via PHP. Hidden copy is not coming
I have a PHP file on a website that receives via POST the return sent by Pagseguro on purchases made on the site -- client name, amount paid, e-mail... finally, all the information regarding the…
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answers8319
viewsA: Is there a way to hide a url on a web page?
In the old days, in the old days, there was a method to this: window.status. Just put on the link something like onmouseover="window.status='Olá'" that when passing the mouse over the link appeared…
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answers870
viewsA: F11 mode in browser
Fortunately this is not possible without a previous user interaction (e.g.. click, keypress, keydown). It is a native browser lock that prevents page code from manipulating window behavior. You can…
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answer47
viewsA: How does Pattern Object Linked to Other Objects work?
The OLOO pattern creates string prototype without the need to intermediate other semantics (e.g.. prototype, new, function) to create and link objects, making it simpler than the Prototype standard.…
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answers272
viewsA: Focus() event does not work on the browser console
Because this is the way the browser works on the console (so much so that it ignores and returns Undefined®). Whenever you run a command on the console, the focus will always be on the command line,…
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answers1689
viewsA: Change the color of a word in a still-editing textarea
Cannot change parts of a text textarea (as well as of a input). You can apply styles (color, background, font type, size etc.) to the whole text or element, not parts of it. That’s because the…
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answer148
viewsA: D3.js include external image on the third button
You need to specify the image attributes separately, not in batch. Noting that there was a function without closing: d3.select("#btn3").on("click", function(){ // Fazer com que o link abaixo…
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answers113
viewsA: Complete next field without user having to give TAB
Adds a Listener in the document which will verify the value in input estado when there are clicks on the page (when you choose an option in the modal). If there are changes in the said input, the…
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answer476
viewsA: Unsafe script
This happens when you try to load some HTTP content within an HTTPS page, such as Javascript: ERRADO ↓ <script src="http://ajax.googleapis..."></script> CORRETO ↓ <script…
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answers277
viewsA: Why does type='date' not work in Firefox?
UPDATING To increase browser compatibility, switch lines (IE does not support forEach): elementsArray = document.querySelectorAll('input'); elementsArray.forEach(function(elem) {…
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answer79
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answer574
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viewsA: Overlay CSS image
"Correct shape" is very relative. I suggested the code below, using display, position relative and transform to get everything in line. In the div where you have the two images, you can place the…
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answers767
viewsA: Remove attribute from a DIV only in mobile version
This code will work in modern browsers. It adds (or maintains) the hrefs when resolution is greater than or equal to 769px and removes them when it is less than or equal to that, whenever the page…
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answer89
viewsA: Changing links with Javascript or PHP
Create a addEventListener to the button, and when it is clicked, it will start a setInterval that will be checking if the id of div confirmation exists on the page. When it exists, it will redirect…
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answer40
viewsA: change the element when it reaches the top
It is possible to loop the elements by checking which one is at the top and apply fixed, and those who are not, apply static: curr_fixed = 0; $(window).on("scroll", function(){ els = $("p");…
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answers120
viewsA: How do I make the image to be centered on the table
Put in the <td> the centralized alignment: <td align="center"> <img src="uma_imagem.jpg" /> </td>
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answers5000
viewsA: How to add elements of an array that is a return of another Function in Javascript?
The error is in the index inside the loop for of the array that is exceeding the number of elements: aqui está o erro ↓ for(var i = 0; i <= numbers.length; i++){ soma += numbers[i]; } The right…
javascriptanswered Sam 79,597 -
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answer1162
viewsA: How to call a variable that is in another file?
Include the Y.php file at the beginning of <body> page Z.php: <?php require('Y.php'); ?> Then take the value of <input> for id (if the input has a id) desired coming from the Y.php…
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answers73
viewsA: Form Validation with Javascript
You can check the 2 fields and return false. However, so that the function loader() is called after the positive validation of the form, it is necessary to remove the return true; of function:…
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answers70
viewsA: Applying Hover to an article
Your problem is in the application of style directly on the tag. This causes the :hover in the <style> is ignored as style statement inline tag has more importance (or weight) than the same…
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answers325
viewsA: Can you open the outllok through php, without being a mailto?
Answering the core of your question, unfortunately PHP will not be able to do what you want, because as it runs on the server, it will not be able to do this exchange between the server and the…
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answers189
viewsA: Is there any way to write a function on the screen other than by onclick?
In your own question is one of the alternatives: no onload. If you nay want to call the function by means of a direct action user (a click, for example), just call it form explicit, whether while…
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viewsA: How to print Javascript variable value in HTML tag?
You cannot take a Javascript generated variable and assign its value within a PHP script this way. Instead, assign to tag input the value of Javascript using setAttribute(): var data = new Date();…
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answers468
viewsA: HTML/CSS Element out of place
I noticed 3 problems in your code: 1) Absence of tag <head></head>. 2) position: absolute; in class .secao: is causing the element with this class to be "loose" on the page, causing the…
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answers56
viewsA: Variables by links
You can use the function strrpos() to see if the string msg=erro is present in the URL ($_SERVER[REQUEST_URI]) and check if the requisition came directed from somewhere ($_SERVER[HTTP_REFERER]). If…
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answers39
viewsA: Image disappears after animation + window resize
The problem is that you are adding the class .showMenu to the element $(".linksMenu") when the Burger is open and is not removing this class when the Burger is closed. In this way, was giving…
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answers436
viewsA: Click action with jquery does not work with duplicate items
You cannot assign the same id to more than one element on the page. If you do this, DOM will always get the first id page and ignore other page(s) (s). So assign a id for each element you want to…
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answers25
viewsA: Help with uncheck
Do this by creating a variable that saves the value of the clicked option. In this case, I created the variable current_value = 0; that will have the initial value 0. When an option is clicked, this…
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answer72
viewsA: CSS3 Modal window does not work
The problem is in id of div of "Aguade, ..." that is conflicting with the id #fluxo modal, which is the id correct referenced on the anchor href="#fluxo": <div id="fluxo" style="border:0px…
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answer122
viewsA: You can change this JS code to open the link in another tab when clicked
You can do it with the function window.open() and then insert the HTML with document.write. See that I changed the variable videos apart from the parentheses and the $: $(function() { var videohtml5…
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answers9608
viewsA: How to select more than one item in a Select Option
I made a script by hand (using jQuery) that replaces a <select> of multiple choice by a dropdown with checkbox for each option. How it works: I added 2 divs below the <select> to receive…
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answers59
viewsA: Insert HTML code in Client-side form without using PHP
Create a div on each location you want to upload the files with ids header and footer and pull them via Ajax: var http = false; if(navigator.appName == "Microsoft Internet Explorer") { http = new…
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answers394
viewsA: How to put the page title according to a product using JS?
You cannot send information via scripts client-side (Javascript) for external websites that try to pull information from your site. This is because sites like Facebook, for example, will take the…
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answer32
viewsA: Time for transitions to be ready for execution
To check when the animation is finished, add addEventListener to the element that will call a callback: var div = document.querySelector('#div') div.classList.add('animar'); div.style.marginLeft =…
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answers53
viewsA: Calculate the end of the screen
This code checks whether the element (in this case a button) is at the end of the visible area of the screen or below it: $(window).on("scroll load", function(){ dist_bot_top =…
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answers351
viewsA: What is gamification in the context of software?
"Gamification" is a term used when a system or campaign wants to make the user feel engaged to achieve something, be it status, score or prizes, as in a game, as a more playful to "arrest" the user…
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answers7926
viewsA: How to Block Right Mouse Button and Block User from Viewing Source Code
IS impossible hide the source code even by disabling the right mouse button for clicks on the page with: document.addEventListener('contextmenu', event => event.preventDefault()); Just typing…
javascriptanswered Sam 79,597 -
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answer173
viewsA: Javascript effect
If I understand your question correctly, just change the display of the image when the values meet the suggested criteria, using if. Note: it is important to assign a id image to facilitate its…
javascriptanswered Sam 79,597 -
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answers1111
viewsA: Invert Divs positions with responsive
One way is to put the divs within a .container and applying display: table;. This way you can reorder the position of divs within the @media defining what is on top (table-header-group;) and what’s…
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answers1359
viewsA: Dropdown menu behind the page contents
The problem is only in: html { overflow-x: hidden; } This code is restricting the page height only to its content (note a small vertical scroll bar to the left of the menu bar), that is, as the…
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answer141
viewsA: Javascript - Logic Handling Data from Arrays
This should do what you want (commented): var mesA = [ "fev", "mar", "jun" ] var valorA = [ 50, 50, 50 ] var mesB = [ "jan", "fev", "mar", "jul", "ago" ] var valorB = [ 25, 25, 25, 25, 25 ] var…
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answer538
viewsA: Doubt in the exercise of stone, paper and scissors
The structure of your code is all wrong. These returns do not exist and this loop while is unnecessary and complicated to work in this case. The best thing would be to do this with a function, which…
javascriptanswered Sam 79,597