52 lines
1.2 KiB
Markdown
52 lines
1.2 KiB
Markdown
### httpPost
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Makes a `POST` request to the passed URL.
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Use [`XMLHttpRequest`](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/Using_XMLHttpRequest) web api to make a `post` request to the given `url`.
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Set the value of an `HTTP` request header with `setRequestHeader` method.
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Handle the `onload` event, by calling the given `callback` the `responseText`.
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Handle the `onerror` event, by running the provided `err` function.
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Omit the third argument, `data`, to send no data to the provided `url`.
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Omit the fourth argument, `err`, to log errors to the console's `error` stream by default.
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```js
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const httpPost = (url, callback, data = null, err = console.error) => {
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const request = new XMLHttpRequest();
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request.open('POST', url, true);
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request.setRequestHeader('Content-type', 'application/json; charset=utf-8');
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request.onload = () => callback(request.responseText);
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request.onerror = () => err(request);
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request.send(data);
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};
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```
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```js
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const newPost = {
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"userId": 1,
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"id": 1337,
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"title": "Foo",
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"body": "bar bar bar"
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};
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const data = JSON.stringify(newPost);
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httpPost('https://jsonplaceholder.typicode.com/posts', console.log, data; /*
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Logs: {
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"userId": 1,
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"id": 1337,
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"title": "Foo",
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"body": "bar bar bar"
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}
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*/
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```
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