Javascript 我可以在javascript中将数组附加到'formdata'吗？
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Can I append an array to 'formdata' in javascript?
提问by Don P
I'm using FormData to upload files. I also want to send an array of other data.
我正在使用 FormData 上传文件。我还想发送一组其他数据。
When I send just the image, it works fine. When I append some text to the formdata, it works fine. When I try to attach the 'tags' array below, everything else works fine but no array is sent.
当我只发送图像时，它工作正常。当我将一些文本附加到 formdata 时，它工作正常。当我尝试附加下面的“标签”数组时，其他一切正常，但没有发送数组。
Any known issues with FormData and appending arrays?
FormData 和附加数组的任何已知问题？
Instantiate formData:
实例化 formData：
formdata = new FormData();
formdata = new FormData();
The array I create. Console.log shows everything working fine.
我创建的数组。Console.log 显示一切正常。
// Get the tags
tags = new Array();
$('.tag-form').each(function(i){
article = $(this).find('input[name="article"]').val();
gender = $(this).find('input[name="gender"]').val();
brand = $(this).find('input[name="brand"]').val();
this_tag = new Array();
this_tag.article = article;
this_tag.gender = gender;
this_tag.brand = brand;
tags.push(this_tag);
console.log('This is tags array: ');
console.log(tags);
});
formdata.append('tags', tags);
console.log('This is formdata: ');
console.log(formdata);
How I send it:
我如何发送：
// Send to server
$.ajax({
url: "../../build/ajaxes/upload-photo.php",
type: "POST",
data: formdata,
processData: false,
contentType: false,
success: function (response) {
console.log(response);
$.fancybox.close();
}
});
回答by raina77ow
How about this?
这个怎么样？
formdata.append('tags', JSON.stringify(tags));
... and, correspondingly, using json_decodeon server to deparse it. See, the second value of FormData.append can be...
...，相应地，json_decode在服务器上使用来解析它。看， FormData.append 的第二个值可以是...
a Blob, File, or a string, if neither, the value is converted to a string
Blob、File 或字符串，如果两者都不是，则将值转换为字符串
The way I see it, your tagsarray contains objects (@Musa is right, btw; making this_tagan Array, then assigning string properties to it makes no sense; use plain object instead), so native conversion (with toString()) won't be enough. JSON'ing should get the info through, though.
在我看来，您的tags数组包含对象（@Musa 是对的，顺便说一句；制作this_tag一个数组，然后为其分配字符串属性是没有意义的；改用普通对象），因此本机转换（使用toString()）是不够的。不过，JSON'ing 应该可以获取信息。
As a sidenote, I'd rewrite the property assigning block just into this:
作为旁注，我将属性分配块重写为：
tags.push({article: article, gender: gender, brand: brand});
回答by Yosuke
Writing as
写作
var formData = new FormData;
var array = ['1', '2'];
for (var i = 0; i < array.length; i++) {
formData.append('array_php_side[]', array[i]);
}
you can receive just as normal array post/get by php.
您可以像普通的数组 post/get 一样通过 php 接收。
回答by halfbit
use "xxx[]"as name of the field in formdata (you will get an array of - stringified objects - in you case)
使用"xxx[]"作为FORMDATA字段的名称（您将得到的数组-字符串化的对象-在你的情况下）
so within your loop
所以在你的循环中
$('.tag-form').each(function(i){
article = $(this).find('input[name="article"]').val();
gender = $(this).find('input[name="gender"]').val();
brand = $(this).find('input[name="brand"]').val();
this_tag = new Array();
this_tag.article = article;
this_tag.gender = gender;
this_tag.brand = brand;
//tags.push(this_tag);
formdata.append('tags[]', this_tag);
...
回答by Doglas
Function:
功能：
function appendArray(form_data, values, name){
if(!values && name)
form_data.append(name, '');
else{
if(typeof values == 'object'){
for(key in values){
if(typeof values[key] == 'object')
appendArray(form_data, values[key], name + '[' + key + ']');
else
form_data.append(name + '[' + key + ']', values[key]);
}
}else
form_data.append(name, values);
}
return form_data;
}
Use:
用：
var form = document.createElement('form');// or document.getElementById('my_form_id');
var formdata = new FormData(form);
appendArray(formdata, {
'sefgusyg': {
'sujyfgsujyfsg': 'srkisgfisfsgsrg'
}, test1: 5, test2: 6, test3: 8, test4: 3, test5: [
'sejyfgjy',
'isdyfgusygf'
]
});
回答by Deva
var formData = new FormData;
var alphaArray = ['A', 'B', 'C','D','E'];
for (var i = 0; i < alphaArray.length; i++) {
formData.append('listOfAlphabet', alphaArray [i]);
}
And In your request you will get array of alphabets.
并且在您的请求中，您将获得字母数组。
回答by llioor
This works for me when I sent file + text + array:
当我发送文件 + 文本 + 数组时，这对我有用：
const uploadData = new FormData();
if (isArray(value)) {
const k = `${key}[]`;
uploadData.append(k, value);
} else {
uploadData.append(key, value);
}
const headers = {
'Content-Type': 'multipart/form-data',
};
回答by Mobasher Fasihy
Simply you can do like this:
你可以这样做：
var formData = new FormData();
formData.append('array[key1]', this.array.key1);
formData.append('array[key2]', this.array.key2);
回答by Marko Rochevski
You can only stringify the array and append it. Sends the array as an actual Array even if it has only one item.
您只能将数组字符串化并附加它。将数组作为实际数组发送，即使它只有一项。
const array = [ 1, 2 ];
let formData = new FormData();
formData.append("numbers", JSON.stringify(array));
