JavaScript – Passing a Function to a Function
On the example of the usual exporting functions to JS and a section of code on Svelte.
File 1: JS file of exported functions
export function updateWait(item, updateNote) {
clearTimeout(timeout);
timeout = setTimeout(function () {
updateNote(item);
}, 1000);
}
File 2: Svelte
– First we import the function.
– Then the main function, which we will further transfer to the imported function.
– And at the very bottom, we call the imported function and pass parameters there: one of the parameters is the second function.
import {updateWait} from ‘../../assets/js/universal’;
function updateOperation(operation) {
let data = {
‘id_’: operation.id,
‘note’: operation.note
}
patchFetch(‘update/’, data);
}
script>
<textarea rows=“2”
bind:value=“{operation.note}”
on:key down=“{handle}”
on:paste=“{handle}”
on:input=“{()=> updateWait(operation, updateOperation)}”
>textarea>
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