functionsendForm() {varoOutput = document.getElementById("output");varoData =newFormData(document.forms.namedItem("fileinfo")); oData.append("CustomField", "This is some extra data");varoReq =newXMLHttpRequest()
Sending Form Data via AJAX 通过AJAX发送表单数据 Sending Simple Types 发送简单类型 Download the completed project. 下载完整的项目。 Overview of HTML Forms HTML表单概述 HTML forms use either GET or POST to send data to the server. Themethodattribute of theformelement gives the HTTP method: HTML表...
利用 FormData对象,我们可以通过JavaScript用一些键值对来模拟一系列表单控件,我们还可以使用 XMLHttpRequest 的 send() 方法来异步的提交表单。与普通的 Ajax 相比,使用 FormData 的最大优点就是我们可以异步上传二进制文件。 创建一个FormData对象 你可以先创建一个空的FormData对象,然后使用append()方法向该对象里添加...
var oData = new FormData(document.forms.namedItem("fileinfo")); oData.append("CustomField", "This is some extra data"); var oReq = new XMLHttpRequest(); oReq.open("POST", "stash.php", true); oReq.onload = function(oEvent) { if (oReq.status == 200) { oOutput.innerHTML = "...
enctype Specifies the encoding of the submitted data (default: is url-encoded). method Specifies the HTTP method used when submitting the form (default: GET). name Specifies a name used to identify the form (for DOM usage: document.forms.name). novalidate Specifies that the browser should no...
function sendForm() { var oOutput = document.getElementById("output"); var oData = new FormData(document.forms.namedItem("fileinfo")); oData.append("CustomField", "This is some extra data"); var oReq = new XMLHttpRequest();
On submit, send the form-data to a file named "action_page.php" (to process the input): <form action="/action_page.php" method="get"> <label for="fname">First name:</label> <input type="text" id="fname" name="fname"><br><br> <label for="lname">Last name:</label> <...
POST Embeds the form data in the HTTP request. Do not use the GET method to send long forms. URLs are limited to 8192 characters. If the amount of data sent is too large, data will be truncated, leading to unexpected or failed processing results. Dynamic pages generated by parameters pass...
The HTML forms consist of a set of form elements that allow the user to enter the data, make selections, and then submit it to the server for processing. HTML forms consist of one or more labels, input fields, and buttons. The HTML form code is: ...
在HTML中使用form-data从form标签中提取信息,可以通过以下步骤实现: 创建一个包含表单元素的HTML页面,使用form标签包裹表单内容。例如: 代码语言:txt 复制 <form id="myForm"> <label for="name">姓名:</label> <input type="text" id="name" name="name"><br><br> <label for="email">邮箱:<...