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c.setup}"/> <canvas aura:id="chart" id="myChart" width="400" height="400"/> Controller setup : function(component, event, helper) { var data = { labels: ["January", "February", "March"], …

This is the nature of object oriented programming. An object holds a collection of values. However, the variable itself simply holds a reference to the object. This means that when you reuse the same …

Don't store data in the helper. … this is an appropriate use of the helper. …

Most likely, "this" inside your particular function refers to the FullCalendar module, or perhaps jQuery, but most certainly doesn't refer to the helper object. …

Relationship fields are not automatically populated in a trigger context. This means that: if(SE.Activity__r.Id != null) Will always be false. You need to check the lookup field directly: if(SE.Activ …

When your helper is getting called recursively, it means you have a method name conflict between the client and server, which, in this case, appears to be getOpportunities. …

Option 1: Extend a Component You can extend an extensible component to share helper methods. … You need an instance of the component to call the helper. You cannot call it without first loading the component. …

You'd want to make the following changes: // Helper function handleMessage: function (cmp, event) { console.log('handleMessage'); console.log(JSON.parse(JSON.stringify(event.data))); }, // Main … code onInit: function (cmp, event, helper) { window.addEventListener("message", $A.getCallback(helper.handleMessage.bind(helper, cmp))); }, …

As a matter of performance, you should use Trigger.old and Trigger.new instead of Trigger.oldMap and/or Trigger.newMap. You'll also get better performance by caching objects. Here's what a typical loo …

Lightning uses caching by default, so sometimes the browser takes a bit to catch up. To fix the problem, disable caching in Setup > Session Settings > Caching, and uncheck Enable secure and persistent …

response.getReturnValue()) } if (status === 'ERROR') { reject(response.getError()) } }) $A.enqueueAction(orgDom) }) }, rediRectToUrl(component, event, helper …

The method is a helper method, which means the parameters are set by the component calling the method. … that has an attribute like: <aura:attribute name="searchEmail" type="Object" access="public" /> Which will then try to call the method as: component.get("v.searchEmail").onValueChange(component, event, helper …

Each row refers to the same parent/child values. In fact, you've made this mistake all through your code. Each row should refer to an element in the list. <aura:iteration items="{!v.contactList}" var …

Toasts are not supported outside of Lightning Experience, communities, and the mobile app. You will need to build your own toast component. The Lightning Strike library by Appiphony is one such exampl …

The insertHandler method should be outside of the for loop entirely. Aside from that, I really don't see any point in trying to optimize your code. If you had a ton of different values, you might use …