topic Re: WAB Source Code of Layer List Widget in ArcGIS Web AppBuilder Questions

WAB Source Code of Layer List Widget

LindaM — Mon, 28 Nov 2016 23:54:13 GMT

In Web AppBuilder (Developer Edition), when I checked the source code of Layer List Widget (Widget.js) , I don't understand why there is always a comma at the end of each function such as below: This is not right in JavaScript grammar. Why? Thanks!

destroy: function() {
this._clearLayers();
this.inherited(arguments);
},

It should be : var destroy = function () {...};

Re: WAB Source Code of Layer List Widget

RobertScheitlin__GISP — Tue, 29 Nov 2016 01:58:18 GMT

Linda,

Doing templated widget/dijit development in dojo is just different then the standard js development that you are use to.

Re: WAB Source Code of Layer List Widget

TomTyndall1 — Fri, 16 Dec 2016 17:07:15 GMT

I think the issue is that the code you posted was embedded within a larger object. Notice how your code is: destroy: function () .... not destroy = function() ...

Your code is defining a destroy property in an object, not a variable named destroy, so in this case the comma is correct (it separates the declaration of the destroy property from the declaration of whatever was the next property in the object).

For example:

lifecycle = {

destroy: function () {},

create: function () {}

};