get()
方法在
FormData
interface returns the first value associated with a given key from within a
FormData
object. If you expect multiple values and want all of them, use the
getAll()
method instead.
注意 : This method is available in Web 工作者 .
formData.get(name);
名称
USVString
representing the name of the key you want to retrieve.
A
FormDataEntryValue
containing the value. If the key doesn't exist, the method returns null.
The following line creates an empty
FormData
对象:
var formData = new FormData();
If we add two
username
values using
FormData.append
:
formData.append('username', 'Chris');
formData.append('username', 'Bob');
下列
get()
function will only return the first
username
value appended:
formData.get('username'); // Returns "Chris"
| 规范 | 状态 | 注释 |
|---|---|---|
|
XMLHttpRequest
The definition of 'get()' in that specification. |
实时标准 |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
get
|
Chrome 50 | Edge 18 | Firefox 39 | IE No | Opera 37 | Safari 11 | WebView Android 50 | Chrome Android 50 | Firefox Android 39 | Opera Android 37 | Safari iOS 11 | Samsung Internet Android 5.0 |
完整支持
不支持
FormData