I am in the process of creating a custom directive in AngularJS for a UI slider that can be used multiple times. Each slider should be able to bind to a specific property. My idea was to use an attribute called "property" which would automatically update when the slider changes, but I am unsure of the correct syntax or how to effectively listen for changes on that property.
Could someone provide guidance on this issue?
One essential aspect to consider is declaring your directive with an isolate scope so that multiple instances can be used concurrently with different property values. Moreover, to monitor changes, include a $watcher in your link function:
.directive("slider, function(){
return {
restrict : 'AE',
scope : {
property : '='
},
template : '.... your template....',
link : function(scope, elem, attr){
... other code if you have it...
// Keep an eye on changes in the property variable
scope.$watch('property', function(newVal){
console.log('Do something with ' + newVal;
});
}
}
});
To implement this in HTML, use the following syntax:
<slider property="person.age" />
In this context, person.age refers to a scope variable being passed into the slider.
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