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原生ajaxde
request.setRequestHeader('content-type','application/x-www-form-urlencoded');
When the action is get, the browser uses the x-www-form-urlencoded encoding method to convert the form data into a string (name1=value1&name2=value2...), then appends the string to the end of the url, splits it with ?, and loads it. this new url.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
When the action is get, the browser uses the x-www-form-urlencoded encoding method to convert the form data into a string (name1=value1&name2=value2...), then appends the string to the end of the url, splits it with ?, and loads it. this new url.