The code I currently have is functional:
$wmdInput.on('keyup', function () {
var rawContent = $wmdInput.val();
scope.$apply(function () {
ngModel.$setViewValue(rawContent);
});
});
Unfortunately, it appears to slow down my typing speed. Is there a way to add a timeout so that the data is still saved, but only updated once every two seconds?
Using AngularJS Exclusively
let updatePromise;
$inputElement.on('keyup', function () {
$timeout.cancel(updatePromise);
updatePromise = $timeout(function() {
let inputData = $inputElement.val();
model.$setViewValue(inputData);
}, 2000);
});
To implement debouncing, I recommend using lodash. You can wrap the function in _.debounce like this:
$wmdInput.on('keyup', _.debounce(function () {
var rawContent = $wmdInput.val();
scope.$apply(function () {
ngModel.$setViewValue(rawContent);
});
}, 300));
By setting a wait time of 300 ms, the function will only be triggered after the user has stopped typing for that duration. Feel free to adjust the wait value according to your needs.
In my opinion, debouncing is more suitable than throttling in this scenario.
Consider exploring Reactive Extensions for JavaScript as a potential solution. One approach is to set up the keyup event as a source of events and then apply throttling to handle the events efficiently. You can find a relevant example in the README that aligns with your requirements...
var $input = $('#input'),
$results = $('#results');
/* Capture the value from each key up event */
var keyups = Rx.Observable.fromEvent(input, 'keyup')
.map(function (e) {
return e.target.value;
})
.filter(function (text) {
return text.length > 2;
});
/* Throttle/debounce the input for 500ms */
var throttled = keyups
.throttle(500 /* ms */);
/* Ensure only distinct values are processed, filtering out control characters */
var distinct = throttled
.distinctUntilChanged();
If you prefer not to use the filter condition based on length > 2, simply omit that part. Afterward, add a subscribe function at the end to handle your specific event processing needs
distinct.subscribe(function(value) {
scope.$apply(function () {
ngModel.$setViewValue(value);
});
});
Additionally, there are specific bindings available for AngularJS that you may find beneficial.
To enhance the functionality of the code snippet provided, include the following two steps:
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