Posts by Sam • 79,597 points
3,121 posts
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answer159
viewsQ: How to pick up a value via GET and others via POST at the same time?
I have a link that passes a value via GET to a page: pagina.php?id=1 Within pagina.php i have a form that will make a POST for itself, but I take the value of the id with $_GET['id'] and the form…
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answers37
viewsA: hasFocus() verification in <a> tag
You will not be able to do this check when loading the page with the element <a>, for he is not self-focusable nor focusable without the attribute href. I see no reason to use the tag a this…
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answer42
viewsA: Infinite text with jQuery
You can do this by checking if the first character of the field has the @ with the event oninput: campo.oninput = function(){ if(this.value[0] != "@"){ this.value = "@"+this.value; } } <input…
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answer148
viewsQ: Problem with include causing unwanted space
I’m creating a page with some includes (top and footer) and where I put these includes a huge space appears with a strange code () (the code does not appear on the page, only on the…
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answers225
viewsA: How to use preg_match() to catch a link within a Javascript code
Instead of putting the whole string in Regex, you can put only the part that matters by taking group 1, which is what is between the last pair of quotes: <?php $url =…
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answers136
viewsA: How to know which checkbox are selected?
Also using .map() you have as a result a string with comma separated values. Example: // Faz tudo de uma vez: declara a variável, cria a array, // converte em string e atribui à variável const s =…
javascriptanswered Sam 79,597 -
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answer2592
viewsA: Execute method/function when loading page
It’s probably calling the event $(document).ready(function(){ before loading jQuery, and with that resulting in error, as the $(document).ready is a jQuery event. In this case you have 2…
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answers139
viewsA: Problem with Ajax and php
The way you’re doing it, the variable nome in the data: Ajax is going empty for PHP, causing error. The first problem observed was this value: name.valueOf(). The name is a global variable of…
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answer67
viewsA: Start a function in the click and stop it by clicking again?
You have to cancel the setInterval tmpCor clicking (see comment in code). You use clearInterval() for that reason: clearInterval(tmpCor); Now the tmpCor = setInterval(mudaCor,1000); should be…
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answer77
viewsA: Is there an alternative in Javascript similar to Java 8’s "flatMap"?
Using .reduce() with .forEach() will add key names of objects in the array res[]: let dados = [ {"cod": "1", "ds": "marmota 1"}, {"cod_2": "1", "ds": "marmota 2" }, {"cod": "3", "descricao":…
javascriptanswered Sam 79,597 -
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answers403
viewsA: Responsive HTML without framework
A simple example using @media query. So that the divs are responsive you can use as unit of measure the percentage % (or vw, of viewport width). In your case, two divas if they were two columns,…
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answers46
viewsA: How to break lines between links without them occupying the entire width of the parent element?
I managed to include the tags <a> within tags <p> (since <a> contains only text), as mentioned in this HTML5 specification. Like the tags <p> take up the entire length of the…
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answers46
viewsQ: How to break lines between links without them occupying the entire width of the parent element?
I’ve been looking at these two topics that deal with line breaking between tags: Break lines in CSS without using extra elements How to break line between CSS tags Both would solve my problem if it…
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answers138
viewsA: Avoid Scale with :Hover link inside a <li>
I managed to settle by putting a class on <a> that I don’t want to be affected: <a class="links" href="#"> Then I change the a:hover for a:hover:not(.links). body{ background: #000; }…
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answers138
viewsQ: Avoid Scale with :Hover link inside a <li>
I have a code I want to apply scale in all the <a> and <button>, as shown in the example below: body{ background: #000; } #lista, #lista li{ margin: 0; padding: 0; list-style: none;…
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answer29
viewsA: How to pass a Javascript value, to a PHP form, and submit as a POST method?
Create a input guy hidden on the form (anywhere within your <form></form>) with the name "checking": <input type="hidden" name="verifica"> With your jQuery you change the value of…
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answers1188
viewsA: Align button at the end of table
Without getting into the merits of semantics that is wrong (as mentioned), put the div within the caption and use the class float-right: <caption> Lista de Tipo de Campos <div…
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answer207
viewsA: How to put a script inside another script
There are 2 basic problems in the code: first. As mentioned, you are using double quotes as the delimiter of the string and within it without making the proper escapes (\") inside quotes. This…
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answer30
viewsA: How do I put an image in place of the black button? Example: a coin?
You can even leave the line below if you want the element to also have a background color: document.getElementById('bcen').style.backgroundColor='black'; But also add:…
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answers480
viewsA: Alignment of the radio button below the image
The image is inside a div which occupies the entire width of the screen (or its container). If you center the radiobutton alone, he’ll be in the middle of div without reference to the image. As the…
radiobuttonanswered Sam 79,597 -
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answer282
viewsA: Ajax does not work on firefox and Chrome works
You’re probably using a Ubmit button to call Ajax and didn’t cancel the event. Chrome provides the event object in the global scope, but Firefox does not. By clicking the Chrome button, Ajax will be…
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answer70
viewsA: How to disable Validations when doing a Submit in the Dropdown Change event
By the plugin documentation, you can destroy the validator instance with the method: validator.destroy(); Where validator is the name of the plugin instance you started. Example: var validator =…
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answers480
viewsA: Align text vertically to an image
Place a class in the element you want to align (in case the h4): <h4 class="meio"> And insert into your CSS: .meio{ position: relative; top: 50%; -webkit-transform: translateY(-50%);…
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answer191
viewsA: Field input result Nan
Put a ternary on return v; by checking whether the first character of v is a number: return isNaN(v[0]) ? '' : v; Because if the value of v for NaN, the height value will be empty, otherwise return…
javascriptanswered Sam 79,597 -
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answer302
viewsA: Taking out an element that is inside an iframe
I don’t know a way to detect DOM loading inside an iframe, but using .on() you can fire the event "load" when the iframe has been fully loaded, and so remove the desired element:…
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answer34
viewsA: Add class in menu link when scrolling in the corresponding Section
Use an event onscroll and check if the distance from the section to the top is bigger than 0 and smaller than the altura da tela / 2. That one /2 is for the class to be added only when the section…
javascriptanswered Sam 79,597 -
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answers499
viewsA: How to redirect to a url using url parameters
Just check if the variable has value with if(variável) and redirect with window.location.href. The value in sub will also be sent to the element if it is not undefined and is not null. window.onload…
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answers921
viewsA: Insert fixed text in Textarea
A suggestion using Javascript. Wrap the textarea in one element <span> with overflow: hidden and create another span after the textarea with the fixed text you want, and put a class in it,…
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answer371
viewsQ: Second backslash in metacharacters when the expression is in quotes
When using a pattern between quotation marks a second backslash must be added (\) in the meta-characters that have such a bar, as in this case, for example: /\d+/ -> "\\d+" Code examples: var str…
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answer67
viewsA: Javascript function breaking the image
You don’t need Javascript for this. You can use scale() of CSS with :hover: .zoom:hover{ -webkit-transform: scale(1.1); /* Safari */ transform: scale(1.1); } <img class="zoom" width="100"…
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answer417
viewsA: Take string size inside array with PHP
In your case it is not take the size of the array, but the index of the array you are selecting. Like the index [1] array $var1 is a string, you can count its size with the function strlen(): for($i…
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answers648
viewsA: how to access the class array with jQuery? Take the second class of an element
No need to use .children(). The .find() you will already find everything (children, grandchildren, great-grandchildren, great-grandchildren etc.): $('li.card').find("i") From there, using the loop…
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answers503
viewsA: Value of a text variable to select a Select item in javascript
You can go through the options and when the text is the same, select it (explanations in the code): var texto = 'Mercedes'; // seleciona as options do select var opts =…
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answer318
viewsA: Responsive site with side left
The problem with the margin is that you didn’t eliminate the margin pattern of body. To resolve just include in your CSS margin: 0 at the body: body{ margin: 0; } Only the nav that occupies the…
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answer102
viewsA: Google’s Pie Chart is deformed when called by Javascript function
This is because the API may not correctly scale the chart in div hidden, getting incorrect values of container dimensions. One way around this is by taking the visibility of the div (different from…
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answers7056
viewsA: Change background-color when click
Since you want the bottom of the button to turn red, why not use the class .btn-danger native to Bootstrap itself? (see the list of button classes). Just add it on the clicked button and remove from…
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answers278
viewsA: How to fix menu with fadein effect?
Just make sure the nav has the class .sticky-top and apply the fadeIn(). But first you have to hide with .hide(): $(window).scroll(function(){ var scroll = $(window).scrollTop(); var nav =…
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answers1387
viewsA: How to use checkbox group to search with php and mysql
My answer uses the principle similar to @Josemelendez’s, but with a slightly different and, in my opinion, more simplified programming. Create a input hidden after the checkbox, putting the class…
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answers795
viewsA: What is http/ftp 220 status?
The question was edited correctly in revision number 3 and then reverted to the original for no apparent reason. I will base myself on the FTP protocol, since as already said, the 220 status does…
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answer54
viewsA: how to bring the element number from within an append in javascript?
You cannot increment a variable with its own value at the same time you declare it with var. The Result would be NaN, since the variable has no value at that moment. You need to declare the variable…
javascriptanswered Sam 79,597 -
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answer26
viewsA: How to run PHP JAVASCRIPT code without an event
According to the documentation at this link, you can open the modal manually just by calling the method .modal() plugin on the element. Therefore it is not necessary to trigger an event for this.…
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answer690
viewsA: Validate password strength in front-end
Can validate using Regular Expressions, where: /.{6,}/ → 6 caracteres ou mais /[A-Z]{1,}/ → 1 letra maiúscula ou mais /[0-9]{1,}/ → 1 número ou mais I only modified your HTML by placing the…
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answer55
viewsA: Show div and hide what was or was previously opened by clicking on <a> button
Instead of using a function for this (onclick="showendereco();"), can simply put a class (class="mostratudo") and create an event that will detect by the class when the button was clicked, and open…
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answer51
viewsA: Problem with "mouseleave" and its reaction with SVG images
This may be a Firefox bug, since in all other browsers the behavior is normal, even with svg elements. Like the event mouseleave is fired while hovering over svg, the solution I found is to check if…
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answer66
viewsQ: What is the difference between Media Rule and Media Query?
Sometimes I see one of these two terms being mentioned when it comes to responsiveness or adjusting content to variations of screen and device types. Gazing this documentation in W3S it is said…
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answer817
viewsA: Darken background by hovering the mouse on the link
You can also use a pseudo-element ::before. Just add the class .escurece in the link container where you want to apply the effect and also add the class .m_esc in the mouse target element. The…
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answer33
viewsA: Replace with the same searched word with Regexr including a new character
Place the expression in the "Replace with" box: ;$1; The $1 represents the captured group and the characters will be added ; before and after what was captured. An example using Javascript, but…
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answers1471
viewsA: How to automatically link to words with javascript?
This solution uses replace with Regular Expression to replace occurrences. However, it is necessary that the text to be analyzed is inside some tag. Example:…
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answer75
viewsQ: Terms used in the CSS
Knowing that CSS literally means Cascade Style Sheets, regularly see the term "property" being used to refer to left, width, top, background etc.. The following question arose before me: Is this…
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answer109
viewsA: how to concatenate an object into asynchronous function?
There’s no way to do it this way because the for is asynchronous to Ajax and will return the last processing inside it. The return used will also return undefined because the for will end before the…