你能告诉我这有什么问题吗:
var formdata = new FormData();
formdata.append("key", "value");
console.log(formdata);
我的输出如下所示,我找不到我的"key“- "value”对
FormData
*__proto__: FormData
**append: function append() { [native code] }
***arguments: null
***caller: null
***length: 0
***name: "append"
***prototype: append
***__proto__: function Empty() {}
*constructor: function FormData() { [native code] }
**arguments: null
**caller: null
**length: 0
**name: "FormData"
**prototype: FormData
**toString: function toString() { [native code] }
*__proto__: Object
**__proto__: Object
**__defineGetter__: function __defineGetter__() { [native code] }
**__defineSetter__: function __defineSetter__() { [native code] }
**__lookupGetter__: function __lookupGetter__() { [native code] }
**__lookupSetter__: function __lookupSetter__() { [native code] }
**constructor: function Object() { [native code] }
**hasOwnProperty: function hasOwnProperty() { [native code] }
**isPrototypeOf: function isPrototypeOf() { [native code] }
**propertyIsEnumerable: function propertyIsEnumerable() { [native code] }
**toLocaleString: function toLocaleString() { [native code] }
**toString: function toString() { [native code] }
**valueOf: function valueOf() { [native code] }
我不明白!昨天它工作得很好,今天我的头撞了很多次键盘!Firefox,Chrome,都是一样的:/
发布于 2013-08-04 09:37:01
你可能遇到了我最初遇到的同样的问题。我试图使用FormData抓取我所有的输入文件来上传图像,但同时我想在传递给服务器的信息中附加一个会话ID。我一直认为,通过添加信息,您可以通过访问对象在服务器中看到它。我错了。当您附加到FormData时,检查服务器上附加信息的方法是通过一个简单的$_POST['*your appended data*']
查询。如下所示:
js:
$('form').submit(function(){
var sessionID = 8;
var formData = new FormData(this);
formData.append('id', sessionID);
$.ajax({
url: "yoururl.php",
data: formData,
processData: false,
contentType: false,
type: 'POST',
success: function(data){
alert(data);
}
});
});
然后在php上:
$sessionID = $_POST['id'];
$files = $_FILES['image'];
$foreach ($files as $key=>val){
//...
}
发布于 2015-10-29 18:37:30
您可以看到,您需要使用console.log(formData.getAll('your key'))
;请注意https://developer.mozilla.org/en-US/docs/Web/API/FormData/getAll
发布于 2018-08-02 17:51:00
在我使用Edge browser的情况下:
const formData = new FormData(this.form);
for (const [key, value] of formData.entries()) {
formObject[key] = value;
}
给我同样的错误
所以我没有使用FormData
,我只是手动构建了一个对象
import React from 'react';
import formDataToObject from 'form-data-to-object';
...
let formObject = {};
// EDGE compatibility - replace FormData by
for (let i = 0; i < this.form.length; i++) {
if (this.form[i].name) {
formObject[this.form[i].name] = this.form[i].value;
}
}
const data = formDataToObject.toObj(formObject): // convert "user[email]":"customer@mail.com" => "user":{"email":"customer@mail.com"}
const orderRes = await fetch(`/api/orders`, {
method: 'POST',
credentials: 'same-origin',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify(data)
});
const order = await orderRes.json();
https://stackoverflow.com/questions/7752188
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