¿Cómo recargar marcadores en JavaScript sin recargar?

How to reload markers in JavaScript without reloading?

Update: So if you wanted to ‘reload’ the markers, you could traverse through and array of currently active markers, set their maps to null, and then reset them on the map. My page loads maps in two scenarios 1) first load 2) ongoing refreshing of a google map through ajax calls.

Within the function, this refers to the global (window) object. If you wish to process a jQuery object — for example, $ (‘div’).map ( callback ); — use .map () instead. The $.map () method applies a function to each item in an array or object and maps the results into a new array. Prior to jQuery 1.6, $.map () supports traversing arrays only.

jQuery.map( array, callback )Returns: Array. Description: Translate all items in an array or object to new array of items. The Array to translate. The function to process each item against. The first argument to the function is the array item, the second argument is the index in array The function can return any value.

Map the original array to a new one and add 4 to each value. Map the original array to a new one, adding 1 to each value if it is bigger then zero and removing it if not. Map the original array to a new one; each element is added with its original value and the value plus one. Map the original object to a new array and double each value.

EDIT The loadGoogleMaps function might be more practical if declared in the global scope, especially when working in an ajax application. And a boolean check will prevent loading the api multiple times because of navigation. I’ve done it like so… this example uses jQuery and google map v3.x

On too many occasions, I’ve come across people using PHP loops to print out large amounts of JavaScript data. In particular, it seems to be common among developers who are attempting to generate multiple markers for the Google Maps API. Typically, they will grab a bunch of long / lat values from their database and then print them out like so:

However, as the number of markers begins to grow in size, the loop starts to become more and more wasteful. The first thing you’ll notice is that your page will begin to load more slowly. This is simply because of the fact that you are printing more and more data.