#formdata

[solved] Update Contact Form FormData

The contact form is an essential part of any website as it allows visitors to communicate with site owners. However, there are times when the contact form may malfunction, causing frustration for both the visitor and the site owner. In this article, we will explain what the FormData issue is in WordPress contact forms and how to fix it. What is FormData? FormData is a built-in JavaScript object…

Platform: DocuSign Problem: How to download form data (i.e. Data filled by the client in docusign document) in csv? Solution: For downloading the Docuform data as CSV file follow these steps: 1. Open your docusign account. 2. From the Documents page locate the document for which you want to download the form data. 3. Click […]

網頁總是有許多表格與資料要填寫，通常前端會做基本的資料格式檢查，然後把資料傳送給後端API處理與儲存～

假設 前端頁面表格： <form id=”Form” method=”post” enctype=”multipart/form-data“> <table> <tbody> <tr> <td>姓名</td> <td><input name=”name” type=”text” maxlength=”10″ /></td> </tr> <tr> <td>年齡</td> <td><input name=”age” type=”text” maxlength=”2″ /></td> </tr> <tr> <td>上傳附件檔</td> <td><input name=”file” type=”file” name=”file”/></td> </tr> </tbody> upload

Aprender AJAX – Procesar un Formulario con XMLHttpRequest

En este articulo les mostrare una forma de procesar un formulario usando Ajax, Javascript y el componente XMLHttpRequest, comencemos. (more…)

調子が良かったのでいくつか練習用リポジトリを作ったりした。

pause-animation-with-animation-play-state

animation-play-stateというプロパティ知らなかったのだけど、これを使うとCSS3アニメーションを一時停止したり再開したりできる。

control-job-queue-with-kue

Redisをバックエンドに使っているジョブキューのライブラリ、Kueを使ってみたもの。とても便利だ。

control-formdata-with-formidable

HTML5のFormDataを使ってAjax経由で複数渡されたファイルをFormidableで受け取るもの。これもとても便利。

control-progress-with-socket-io

前回テンプレートと言ってましたけど，"erb"を使うだけなので辞めました．(ｷｯﾊﾟﾘ) そして今回は，ブラウザへローカルファイルをDrag&Dropしてサーバへ送信するJavaScriptを書いていこうかと思います．

I encounter a strange exception when I try to post a FormData to server with $.ajax:

Uncaught TypeError: Illegal invocation

The code I use to post the FormData looks like this:

$.ajax({

    url: url,

    type: 'POST',

    data: formdata,

    dataType: 'json',

    success: callback

});

I go check the jQuery's document, well it turns out that jQuery would try to convert data into a string if it's not already a string. So we need to add an option: processData:false here to tell jQuery: don't touch my data! Also another option contentType:false is required to prevent jQuery to add a Content-Type header for you, otherwise the boundary string will be missing and the upload would fail. The final ajax object looks like this :

$.ajax({

    url: url,

    type: 'POST',

    data: formdata,

    contentType: false,

    processData: false,

    dataType: 'json',

    success: callback