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xmlhttprequest

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courtlanda last edited by
Can you tell me, please, how do we put UTF-8 in the xmlhttprequest to send a request to a keel? In the server logs, these are: "name"?
```
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "/registration",false);
        xhr.send(formData);
```
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T
terrea last edited by

Make sure:
(1) Your files and violators are established in UTF-8,
(2) Your server gives these files to UTF-8
(3) You see the web server logs in the terminal that support UTF-8
(4) On your server, support is provided to UTF-8.
You can download web server logs, open them in the text editor and see what code he recognized them. If everything is read and the editor shows UTF-8 coding, then you have a terminal problem.
Contemporary default browsers work in UTF-8, so first check this out, and if you have a specific case where you're sending requests from a page in code cp1251, you might need to use the @Alex Krass.
Right here. https://tomcat.apache.org/tomcat-8.0-doc/logging.html e.g., it is stated that, by default, tomcat retains logic in the system code, there is a log4j switching instruction from utf8
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Managing jQuery XMLHttpRequest content with PHP loads all HTML within DIV
Software Programming • php jquery xml • • courtlanda

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I've given with the error, I was making the open to the same page (index.php) so I went into the loop. xhttp.open("POST", "index.php", true); I used smarty and hadn't seen that the page I uploaded was the same one I sent to.I've solved it working with another file apart.
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It does not do the XMLHttprequest request properly. Warning (synchronous xmlhttprequest )
Software Programming • javascript json xml requests jsonobjec languaget • • Raziyah00

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You can verify the status of the call this way:xhReq.open("get",ress,true); //si quieres que sea asincrona inreq.onreadystatechange = function (e){ if (xhReq.readyState == 4){ //se completó if (xhReq.status == 200){ //todo salió bien del lado del servidor const respuesta = JSON.parse(xhReq.response); console.log(respuesta); } } } xhReq.send(null); Try and say what happened. Greetings!
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Javascript with async-await
Software Programming • javascript mysql mvc async language await • • Burma

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When javascript returns [object Object] it is because it prints the instance of the object. To resolve this, vc can use the JSON.stringify() method to show the content of its variable, so it converts its object into string.In that case it would be: console.log(" Returning from SQL: "+ JSON.stringify(return)))
I can't carry txt with xmlhttprequest
Software Programming • javascript php html • • jeanid

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That such ariel checking your JS code I see that you call the Linea() function from the panel() function, this will not display information due to the asynchronous nature of ajax(XMLHttpRequest) when the petition is made can pass some milliseconds to receive the answer of the server, however, the JS does not stop to wait for the information to arrive, it continues to run. The way you make this work is by using promises. I leave this thread where they use promises with native XMLHttpRequest https://stackoverflow.com/questions/30008114/how-do-i-promisify-native-xhr
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Validate file extension
Software Programming • html jquery magento • • kalyn

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It is possible yes, because the attribute value of the input returns the file name:$j(function () { $j("#arquivo").change(function () {//ou Id do input var fileInput = $j(this); var maxSize = $j(this).data('max-size'); var extPermitidas = ['jpg', 'png', 'gif', 'pdf', 'txt', 'doc', 'docx']; console.log(fileInput.get(0).files[0].size); //aqui a sua função normal if (fileInput.get(0).files.length) { var fileSize = fileInput.get(0).files[0].size; // in bytes if (fileSize > maxSize) { $j('#resultado').text('Arquivo excedeu o limite permitido, por favor escolha arquivos com no maximo 2GB*'); $j('#validate').attr('disabled', 'disabled'); } else if(typeof extPermitidas.find(function(ext){ return fileInput.val().split('.').pop() == ext; }) == 'undefined') { $j('#resultado').text('Extensão inválida'); $j('#validate').attr('disabled', 'disabled'); } else { $j('#validate').removeAttr('disabled'); $j('#resultado').hide(); } } }); }); Follow the example in action:function verificaExtensao($input) { var extPermitidas = ['jpg', 'png', 'gif', 'pdf', 'txt', 'doc', 'docx']; var extArquivo = $input.value.split('.').pop(); if(typeof extPermitidas.find(function(ext){ return extArquivo == ext; }) == 'undefined') { alert('Extensão "' + extArquivo + '" não permitida!'); } else { alert('Ok!'); } }<input type="file" onchange="verificaExtensao(this)">
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How do you do, given the visoco year?
Software Programming • javascript php jquery • • baileigh

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Well, your code's working. There's no way to check the original php option, so there's a little js-only rewriting:<!DOCTYPE html> <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script> </head> <body> <select name='day' id='day'> <option selected='selected' disabled='disabled'>День</option> </select> <select name='month' id='month'> <option selected='selected' disabled='disabled' value='0'>Месяц</option> <option value="1">января</option> <option value="2">февраля</option> <option value="3">марта</option> <option value="4">мая</option> <option value="5">июня</option> <option value="6">июля</option> <option value="7">августа</option> <option value="8">сентября</option> <option value="9">октября</option> <option value="10">февраля</option> <option value="11">ноября</option> <option value="12">декабря</option> </select> <select name='year' id='year'> <option selected='selected' disabled='disabled' value='0'>Год</option> <option value="2015">2015</option> <option value="2016">2016</option> <option value="2017">2017</option> <option value="2018">2018</option> <option value="2019">2019</option> <option value="2020">2020</option> <option value="2021">2021</option> </select> <script> var updateDays = function() { var year = document.getElementById('year').value || 2015, month = document.getElementById('month').value || 1, md = new Date(year, month, 0).getDate(); var select = document.getElementById('day'); select.options.length = 1; for (var i = 1; i <= md; i++) { var option = document.createElement('OPTION'); option.innerHTML = option.value = i; select.appendChild(option); } }; updateDays(); $("#month").change(updateDays); $("#year").change(updateDays); </script> </body> </html>Maybe you've had a violin because you haven't been chosen for a year or a month at the time of the calculation of the ring of days. For correction, values for default options are added.
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Local preservation of variables
Software Programming • javascript • • jonetta

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Use it. localstorage or session or cookie to maintain variables according to needs.You should take it. var score = 0 To add data to the stored value. Example of comments:<button onclick="plusScore()">Добавить очки</button> <button onclick="balanceUser()"> баланс </button>  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script> <script> function plusScore() { var score = localStorage.getItem('Score'); //Получаем значение из переменной, если её нет - будет null score = +score + 100; // Значение score приводим к числу и к этому значению прибавляем 100 console.log(score); localStorage.setItem('Score', score); //Сохраняем в localstorage } function balanceUser() { var scor = localStorage.getItem('Score'); //Получаем значение из localstorage console.log(scor); } </script>
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Perform multiple GET with XMLHttpRequest
Software Programming • javascript • • Nykeriab

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For what you want the ideal will be to create an array of names and as you go through it makes ajax requests by creating and configuring the objects XMLHttpRequest:const url = "http://www.a_sua_pagina_aqui.php"; const nomes = ["Fernando","Lucas"]; nomes.forEach((nome) => { //percorrer todos os nomes const xhttp = new XMLHttpRequest(); //criar o objeto para o pedido xhttp.onreadystatechange = function() { //apenas dentro do if tem a resposta à requisição if (this.readyState == 4 && this.status == 200) { console.log(xhttp.responseText); //resposta vem no responseText } }; xhttp.open("POST", url , true); //requisição do tipo POST com true para ser assíncrono xhttp.send("nome=" + nome); //parâmetros enviados aqui, neste caso apenas o nome }); It is important to remember that the order with which you receive the answers will not necessarily be the order with which you sent them!
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What's the difference between the method and the function?
Software Programming • javascript ecmascript 6 • • obi

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The difference between methodome and Function in JS exclusively in syntaxis. It's like a class and a prototype.It's just that ES6 language slaves have decided to definitively admit that prototypes don't need any sauce (the expansion of standard classes by the community has declared a universe's evil, and the prototypes by the classic P.O.s are killing hythium optic optimism in all the giggrappers), so the next generation of cybcryptists can write,It has traditionally been assumed that the function is something separate from everything, accepts parameters and returns the result; the method is something that is nailed to a particular object, in fact accepts the object as the first argument, clearly or not, and as such, the function is little different; and all the Virtas still separate the procedures that do something, sometimes accept, but do nothing.There is no such thing in the world: this is everywhere, global functions are the methods of a global facility (in browsers window), functions always return (if nothing is returned, undefined will return for you). In other languages, the steep division of statistical global methods, methods of expansion and other forms, multiplying all classifications into zero.Inside, all the functions of the meta-procedures look exactly the same: puzzles of position, jumped, done, kicked, returned.
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Exclusion Button and Editable Fields (PHP,SQL,HTML,CSS)
Software Programming • javascript php sql css html5 • • simrah

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Soiling, if I realized what you want, it could be this. I just put it on the mark. You will need to reference the JQUERY library.The example in php (if so, it will only replicate the input text for all <td>!while( $exibe = mysqli_fetch_assoc($sql)){ echo "<h3> <tr > <td>" .$exibe['descricao']. "</td> "; echo " <td>" .$exibe['placa']. "</td> "; echo " <td>" .$exibe['codigoRenavam']. "</td> "; echo " <td>" .$exibe['anoModelo']. "</td> "; echo " <td>" .$exibe['anoFabricacao']. "</td> "; echo " <td>" .$exibe['cor']. "</td> "; echo " <td>" .$exibe['km']. "</td> "; echo "<td> <input type='text' id='".$exibe['marca']."' name='marca' class='alterarMarca' disabled='true'></td>"; echo " <td>" .$exibe['preco']. "</td> "; echo " <td>" .$exibe['precoFipe']. "</td>"; echo "<td><a href='javascript:void(0);' class='updateTable'>Alterar</a></td>"; echo"<td> </td>";"</tr><h3>"; } _ If you want to change this field then you must add the following AJAX to create the class update <script> $(document).ready(function(){ $(document).on('click', '.updateTable', function(){ $('.alterarMarca').prop('disabled',true); var ID= $(this).parents('tr').find('.ID').val(); var marca= $(this).parents('tr').find('.alteramarca').val(); $.ajax({ url: 'classupdate.php', type: "POST", cache:false, data:{ID:ID, marca:Marca}, async: false, success:function(data){ alert(data); }, error: function(jqXHR, textStatus, errorThrown){ alert(errorThrown); } }); }); }); </script> Some doubts do not hesitate to question.
There is no clear reason for the error of TypeError: Cannot read property 'XXX' of undefined
Software Programming • javascript • • inna

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class Wait { forTrue ( You're made like class and method. The method does not automatically transfer the context of this. We should either:class Wait { constructor() { this.forTrue = this.forTrue.bind(this); } forTrue (....) { .... } } or make a method of shooter function:class Wait { forTrue = (....) => { .... }; }
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Problems with XMLHttpRequest in Chrome
Software Programming • javascript jquery ajax requisition • • obi

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This: xhr.open("PUT", "*"); It doesn't make sense, the second parameter in open must be a relative URL or path, * doesn't look like a "valid" URL.See this part of the error message:The response had HTTP status code 405.Code 405 indicates a method that is not allowed, which refers to the use of PUT, GET, etc, but in your case is probably the URL you used as asterisk *.Probably what you want is something like: xhr.open("PUT", "/foo/bar"); The problem of No 'Access-Control-Allow-Origin' header is present on the requested resource. has been spoken several times on the site:Search: https://pt.stackoverflow.com/search?q=No+Access-Control-Allow-Origin The url that is trying to access is external or a sub-dominio, to allow this type of request (from different domains).
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Uncaught TypeError: Cannot read property 'split' of undefined at XMLHttpRequest. alertContents
Software Programming • javascript ajax • • guilherme

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It may be:requestatual may not be a stringrequestatual is undefinedhttpRequest is not receiving informationObs: Show more code next time.
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Starting the violin when selecting the value from the PHP JS list
Software Programming • javascript php sql • • nishika

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If you're using ajax, you're gonna use it right... you're gonna do something like that. I didn't know the details, just led to a less readable view. <body> <div class="container mt-4"> <h1>KOLICHESTVO</h1> <select id="templateId" name="templateId"> <option value="1">1</option> <option value="2">2</option> </select> </div> <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> <script> var v; $('#templateId').on('change', function() { v = this.value; refreshJournal(v); // console.log(v) }); function refreshJournal(v) { var form = document.orders; $.ajax({ url: 'path_to_ur_script', method: 'post', dataType: 'json', data: { 'value':v }, success: function(html){ $("#divider").html(html); } }); return false; } </script> </body>
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XMLHttpRequest: String to HTML
Software Programming • javascript html tease • • rosemadder

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As I said in the comments, there's only one missing. .append(html) somewhere in your DOM. Once you've done this, you have the freedom to manipulate it as you want. var URL_PATH = 'https://developer.mozilla.org/es/docs/Web/HTTP/Access_control_CORS'; var method = "GET"; var peticion = new XMLHttpRequest(); peticion.open(method, URL_PATH, true); var promesa = new Promise(function(resolve, reject) { peticion.addEventListener('readystatechange', function() { if (peticion.readyState === 4) { resolve(peticion); } }) peticion.addEventListener('error', function() { reject(peticion); }); }); peticion.send(); promesa.then(function(request) { var textHtml = request.responseText; var html = document.createElement('html'); html.innerHTML = textHtml; var contenido = document.getElementById('contenido'); contenido.append(html);// <-- Aqui el append //Aquí ya tenemos acceso al DOM que fuimos a buscar const titulo = document.getElementsByClassName("document-title")[0].innerText; console.log("El título de la página es: " + titulo); }, function(request) { console.log('rechazo: ', request); });<script src="https://code.jquery.com/jquery-3.4.1.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script> <div id="contenido"> </div> </div>Careful.: The page I am consulting (developer.mozilla.org) currently has an allow origin *, if this changes in the future it will throw a CORS error.

xmlhttprequest

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