XMLHttpRequest: timeout property - Web APIs | MDN (original) (raw)
Baseline
Widely available
The XMLHttpRequest.timeout
property is an unsigned long
representing the number of milliseconds a request can take before automatically being terminated. The default value is 0, which means there is no timeout. Timeout shouldn't be used for synchronous XMLHttpRequests requests used in a document environment or it will throw an InvalidAccessError
exception. When a timeout happens, a timeout event is fired.
**Note:**You may not use a timeout for synchronous requests with an owning window.
Using a timeout with an asynchronous request.
Example
const xhr = new XMLHttpRequest();
xhr.open("GET", "/server", true);
xhr.timeout = 2000; // time in milliseconds
xhr.onload = () => {
// Request finished. Do processing here.
};
xhr.ontimeout = (e) => {
// XMLHttpRequest timed out. Do something here.
};
xhr.send(null);
Specifications
Specification |
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XMLHttpRequest # the-timeout-attribute |