Run JavaScript function every n seconds

//tell javascript to run a function in 1 second setTimeout ("myFunction()", 1000 );


function myFunction(){

        //do stuff
        //once the function is finished, queue this function up to run again in 1 second

	setTimeout ( "myFunction()", 1000 );

}

Get latitude and longitude of an address using google maps

Google doesn’t make it easy to show you the latitude and longitude of an address you search in google maps, but there’s an easy way to get the info.

go to google maps, type the address, and click search
once you’ve found it, go to your address bar and clear what’s in it
paste: javascript:void(prompt('',gApplication.getMap().getCenter())); into the address bar
use the coordinates for whatever you wish!

Cause a field to be auto-focused when the page is done loading

So, wouldn’t it be user friendly, if when you went to a form page in a document, if the cursor was automagically positioned at the first field in the form?

Why, yes it would. Try:

	
Event.observe(window, 'load', function(){
     try {
          $('eventName').focus();
     } 

     catch (e) {}
});

after your </form> tag. This requires the prototype javascript library

Javascript example to do an auto-generated slug on a WordPress Plugin

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Untitled Document</title>


function duplicateField(field1, field2){

     var theLength = document.getElementById(field1).value.length - 1;

     var theString = document.getElementById(field1).value;

     for(var i=0; i  str.length-1) return str;

return str.substr(0,index) + chr + str.substr(index+1);

}

function changeColorBack(fieldName){

document.getElementById(fieldName).style.color = "#000000";

}

</head> <body> <p> <input id="field1" onkeyup="duplicateField('field1', 'field2');" type="text" /> </p> <p><br /> <input id="field2" type="text" onfocus="changeColorBack('field2');" /><br /> </p> <p> <span id="span1"></span> <input id="submitButton" type="submit" value="Submit" /> </p> </body> </html>