Posts by Sergio • 133,294 points
2,786 posts
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viewsA: JSON.stringify() method
If you want to get a JSON or an array with all values of "nomeProjetos " inside "NProjetos" just map this array like this: var nProjetos = membro.NProjetos.map(el => el.nomeProjetos); or in less…
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answers60
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answer193
viewsA: How to smooth appearance of Ivds
You can create a function by hand to fade... It could be something like this: function fade(el, tipo) { for (var i = 0; i <= 100; i++) { setTimeout(function(nr) { var val = tipo == 'out' ? (100 -…
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answer733
viewsA: Calling 2 events on onclick
You can do it two ways: Usa (A(), B(), C()) to invoke multiple actions: onclick="(foo('html'), bar('html'))" or do everything in Javascript: var button = document.querySelector('button');…
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answers157
viewsA: Javascript validation calculator (I can’t find the error)
When the browser reads these lines: var num1 = parseInt(document.getElementById("campo1").value); var num2 = parseInt(document.getElementById("campo2").value); He immediately reads the value of…
javascriptanswered Sergio 133,294 -
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answers244
viewsA: Zero to right - Input
var input = document.querySelector('#meuInput'); input.addEventListener('keyup', function() { this.value = this.value + 0; }); The idea is: every time a key is dropped, the value of the input should…
javascriptanswered Sergio 133,294 -
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answers41
viewsA: Function does not run 2x
Your code is correct and works with small adjustments in jsFiddle. don’t use the onLoad jsFiddle, it puts your code inside a function and the functions you had stop being global and HTML stops…
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answer114
viewsA: Set background color in DIV when sort alphabetically in jQuery
I suggest you do this with CSS and take the logic out of HTML colors: #container div div:nth-child(2n){ background-color: #dcdcdc; } #container div div:nth-child(2n + 1){ background-color: #fff; }…
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answers2059
viewsA: How to Verify the existence of an Id in a document via Jquery?
var existeFundoIndex = document.getElementById('fundo_index'); This is the way to know if there is an element on the page with the ID fundo_index. It’s pure, native Javascript. For simple things…
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answer194
viewsA: Open DIV with Select in div Cloned with jquery
You have some errors in HTML, Divs close with </div> and not <div/>. In addition to changing the structure slightly (I have the impression that the structure in the question is wrong)…
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answer396
viewsA: Chart.js - Type Line - JSON - SQL Server
The line $(function() { is the jQuery way of calling window.load. The code that’s inside $(function() {...}); will only be run when DOM is loaded. So have the line window.onload = function() {...};…
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answer1058
viewsA: How to create a color palette and color a div depending on the chosen color
Here is an example. A palette with colors to choose from, a field where the color is shown, and buttons that store the color code in the .value. This example does what you want: "You click on a…
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answer3675
viewsA: What is the difference between "dependencies" and "devDependencies"?
TL;DR: dependencies: programs needed for production devDependencies: programs used for development When we run npm install on a board where there is a repository and a package.jsonboth dependencies…
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answers613
viewsA: Ajax Jquery return variable giving error
I took a look at your website and the return of AJAX. I saw this: At first it seems correct, the OK is there... but the problem is that it has blank space and line break before of OK, making it a…
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answer80
viewsA: assign a value to javascript variable
Don’t use the same ID for different elements, meaning Ids have to be unique and there can only be one per page, no repetitions. An alternative would be like this: $nome = $mysqli->query("SELECT *…
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answer188
viewsA: Dynamic settimeout with PHP
The this within setTimeout is not what you think. setTimeout runs in execution context window, therefore the this is not the element you want. You have to refer to the element you want and then get…
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answers6898
viewsA: Is it possible to do Ubmit without refreshing, and without jQuery?
To submit the form without refreshing you have to use AJAX and stop the event submit. Stop the event submit: var form = document.querySelector('form'); form.addEventListener('submit', function(e){…
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answer247
viewsA: How to recover original image name with jQuery?
You can use the files input to know file names. The complete path with directories is blocked by the browser but the file name can be fetched from the input.files. The input.files is part of the…
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answer307
viewsA: Cloned Div (jquery) elements only work in Original div
In HTML you cannot have more than one element with duplicated ID. O .getElementById() looks for a single element, and when you have several elements with the same ID the thing ceases to function as…
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answer29
viewsA: How to make element appear only for Mozilla Firefox users
var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') != -1; That line looks for the word firefox in the browser’s digital signature, useragent string. If isFirefox for true is a…
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answers1743
viewsA: Transform Number into binary text
As already mentioned you can use the .toString() and passing as an argument 2, which means base 2, Radix 2 or binary. To complete the zeroes on the left just need one more line of code, something…
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answer178
viewsA: How does this regex work in js?
When you have .replace(/(\d)(?=(\d{3})+,)/g, "$1.") what’s going on is this: The line Number(1450999).toFixed(2).replace('.', ',') turns your number into a string like this: "1450999,00". And it is…
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answers169
viewsA: Doubt in the statement between Arrow expression and function expression of an event
There are differences in the way it works, beyond the appearance. () => {} is an arrow function (Arrow Function) and always runs in the context it was called. It does not accept .bind, .call,…
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answer54
viewsA: .firstchild returning the wrong son
What you’re looking for is .firstElementChild that gives you the first child that is an element. When you use only .firstChild it will give you the blank text and the line break you have in HTML.…
javascriptanswered Sergio 133,294 -
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answer68
viewsA: Div input type Radius
You already have the HTML in the correct order, only CSS is missing: #radio input { display: none; } #radio label { border: none; display: inline-block; } img { /* só para o exemplo */ height: 50px;…
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answers449
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viewsA: How do I allow only numbers and a special character in javascript?
I suggest you have a function that clears the blanks and then checks the structure 5 digitos > traço > 3 digitos. It could be so: function isCEP(str) { return !!str.split('…
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answers694
viewsA: Fullcalendar: chmar an external Json file
You can use ajax to get that JSON and when ajax completes run the code you have. Something like this: $(document).ready(function() { $.getJSON("/Process.PHP", function(event) {…
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answers7032
viewsA: How to return the sum of numbers of an array with indices of value greater than or equal to 2
You can use the .reduce (ES5) or a cycle for (old-fashioned). Examples of both: var arr = [0, 2, 0, 0, 3, 5]; // a soma deve ser 10 var valor = 2; function sumFor(arr, nr) { var soma = 0; for (var x…
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answers2833
viewsA: How to check if at least one item of the array has value equal to or greater than 2
Here are several different ways: var arraryValida = [0, 2, 0, 0]; var arraryInvalida = [0, 1, 0, 0]; var valor = 2; function testeFor(arr, match) { for (var x = 0, l = arr.length; x < l; x++) {…
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answers8300
viewsA: How to create a toggle on and toggle off button?
I suggest separating the question into two and having a question aside for the server part. I believe there are plenty of examples of how to do. Note: I ended up making a component of this in React…
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answer69
viewsA: Date() object does not work in Mozilla Firefox
The reason your code does not work on jsFiddle is because this function relogio is being declared within the onload jsFiddle, and therefore not available in the global scope where the eval of…
javascriptanswered Sergio 133,294 -
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answer112
viewsA: Is there a means of "mirroring" properties of one object into another?
A suggestion: var obj = { foo: 12345, bar: { teste: { aninhado: { chave: 6789 } } } }; function mostrarProps(obj, props) { var valores = props.map(function(prop) { if (typeof prop == 'string')…
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answer391
viewsA: Add instead of concatenating number to an input value
The value of the input is read as String, you have to convert into Number to add instead of concatenate. You can do it like this: var somar = (function(el) { return function() { el.value =…
javascriptanswered Sergio 133,294 -
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answer33
viewsA: Jquery function executes when I click on a button with back() function?
Knuckle type="button" on that button. If you don’t do this the browser thinks the type is type="submit" which is the default behavior defined in the browser if the attribute type is not defined.…
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answers701
viewsA: How to do this effect of Hover?
This is done with CSS. #menu .item4 a { border-top: solid 4px #2d8444; background: #2d8444; height: 0; display: block; margin-top: 0; -webkit-transition: all 0.2s ease-out 0s; -moz-transition: all…
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answers389
viewsA: Conflict between jquery and min-jquery
From what I see on your page you are loading jQuery 1.3, 1.7 and 2.0 in different places, it generates conflicts and you only really need one of them. Whatever conflicts is probably because you have…
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answers113
viewsA: How to create a class from another class? (Hierarchy)
The modern way to do this is with classes implemented in the ES6/ES2015 version of Javascript/Ecmascript. This is already available in almost all browsers. In this case the syntax is: class…
javascriptanswered Sergio 133,294 -
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answer400
viewsA: What is the best way to use Node dependencies?
You have 3 alternatives: use CDN, for example https://cdnjs.cloudflare.com/ajax/libs/bulma/0.2.3/css/bulma.css use the file inside node_modules copy to your project The first option is an…
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answers31
viewsA: Receive a date array other than the one chosen
Cycle out to run all the dates of the given month and filter out the ones you don’t want. For that you need a onSelect in the plugin options, such as callback of the change of values. Would look…
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answers1244
viewsA: Show Data in Div Jumping Line
You have two objections, or you use one <br> that makes exactly "line break" or puts that content inside a block element, such as the p. Or any other element not "block" but with display:…
javascriptanswered Sergio 133,294 -
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answer1097
viewsA: What is the Milestone field on the github for?
Functionality Milestone (stage in Portuguese) serve to group issues and pull requests around one stage. So you can have a record of what things need to be resolved for the stage to be complete. In…
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answers348
viewsA: Cancel redirect when sending a form
To prevent a form from being submitted you have to stop the event submit. The way Javascript gives us is by calling e.preventDefault(); inside the event’s callback. So you have to do: $(function() {…
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answer235
viewsA: Capture a state name (Uf) and an image
To know where you click the best is to have an SVG that has elements for each region and Javascript can know where the click occurred. For caprat you can do so, for example: The structure of the SVG…
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answer768
viewsA: Catch the height of an image
Two alternatives, using .getBoundingClientRect and getComputedStyle. var img = document.querySelector('img'); var altura = img.getBoundingClientRect().height; var altura2 =…
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answers530
viewsA: Recover return from callback
When you have service.getDistanceMatrix({...}, callback); What happens is that this method takes two arguments. An object, and a function. And with that the function/ method is consumed and the…
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answers85
viewsA: Change function jQuery
Deleting the part of the code that allows you to re-sort the table is risky, not to say impossible because that code is inserted inside the library that is the Datatable plugin. But the sensible…
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answers559
viewsA: How to show the smallest age between 3 ages with Javascript?
You have some syntax and semantic errors: When you have if( idade1 < idade2 || idade1 < idade3 ); missing a {, several times. When you have || you must have && to ensure that it is…
javascriptanswered Sergio 133,294 -
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answers2458
viewsA: How to delete Input Placeholder when Clicking inside the Field
The placeholder function is to help explain the functionality or content the input should have. This placeholder disappears when you start typing in the input. To make it delete when the input is in…
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answers759
viewsA: How to style a select with Javascript only without Jquery?
Here’s a hint that uses an HTML structure with a native but hidden select and that changes depending on the custom select is changed. I also made another more class-style version that allows…
javascriptanswered Sergio 133,294