XML AJAXLesson 23Free preview

AJAX Request

This lesson is part of XML · All levels

Summary

After the open() is called, the request is actually sent by the send() method. For GET requests, data is usually included in the URL, while for POST data is sent via the request body. When sending certain data, the Content-Type header such as application/x-www-form-urlencoded needs to be set to setRequestHeader().

Key points

Execute a pre-defined request
GET transmits the parameters through the URL, POST through the body
The flag makes the request run asynchronous
SetRequestHeader() set the header as Content-Type
General form data is sent via the POST method

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