I have been attempting to implement the lodash function _.debounce for a DefineMap view-model method in canjs. Even after trying to do this within the init method, I am having trouble with properly referencing 'this' inside the debounced function:
export const ViewModel = DefineMap.extend({
init() {
this.myMethod = _.debounce(this.myMethod, 200)
},
myMethod() {
// cool stuff here
}
})
Any guidance on resolving this issue would be highly appreciated!
Since DefineMap objects come sealed by default, and if you desire independent throttling for each instance of ViewModel, here is the recommended approach:
var time = new Date();
var ViewModel = can.DefineMap.extend({
id: "number",
myMethod: {
type: "any",
default(){
var fn = _.debounce(function(){
console.log(this.id+" says Hi at "+(new Date() - time))
},100);
return fn;
}
}
});
This code essentially assigns a debounced function to the myMethod property. You can observe it in action at this link: http://jsbin.com/nekelak/edit?html,js,console
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