Contents
How do you make a map on LWC?
Map in JavaScript
- Define a map in LWC and Aura Component –
- get(key) – fetch value by key.
- set(key,value) – adds key and value to map.
- has(key) – Check whether map contains key.
- delete(key) – delete given key from map.
- clear() – clear whole map.
- keys() – This method return all keys in a map.
How do you iterate an object in LWC?
To loop through List in LWC, we can make use of for:each and iterator:it. To use for:each, assign the Array to for:each and iterator variable to for:item. Then, we can use this iterator variable to access the elements in the Array. To use iterator:it, we just need to assign the Array to iterator:it.
How to create iterate map in Lightning Web Components?
In Lightning Web Components (LWC) the element which is direct child of iterate we need to give them a unique. So when we need to rerender that section LWC use this key to rerender only that section. If we don’t provide a key then LWC will give us an exception Elements within iterators must have a unique, computed key value.
How to create a custom lightning page template component?
The default width for the “left” region is “MEDIUM”. In tablets, Specify supported devices for an app or record page template component with the tag set. When you create a custom template component for an app page, you must assign it both the Large (desktop) and Small (phone) form factors.
How to create a lightning component in Salesforce?
In Setup, click Create > Tabs. Click New in the Lightning Component Tabs section. Select c:MyMap as the Lightning Component. Specify My Map as the Tab Label and My_Map as the Tab Name. Click the magnifier icon and select Lightning as the tab icon. Click Next and Save.
How to specify zoom level in Lightning component?
The example for specifying zoomLevel also uses listView. If you don’t specify the zoomLevel attribute, the lightning:map component calculates a zoom level to accommodate the markers in your map. To specify a particular zoom level, set zoomLevel to a value corresponding to a Google Maps API zoom level.