understanding javascript execution context, what the hell the variable is?
If you are a C programmer, you must know you can not declare a variable using the same name as the function formal parameter in the same scope: void foo(int […]
javascript
a simple example of jquery, ajax.post, and php
I’ve learned enough about ajax, from javascript ajax to jquery ajax, from client side to server side, from asp to php, from form submit to various data types encoding and […]
How to add markers on double-click?
We’ve learned how to add markers on map. In that example, the marker is added when the map is loaded, and its location is predetermined. How to add a marker […]
How to pop up an information window when clicking a marker on map?
We’ve learned how to add markers on map using baidu map api. An often encountered use case is when user clicks on a marker, an information window pops up showing […]
How to use baidu map api to add markers on map?
An important feature of a map application is the ability of adding/displaying markers on a map. Markers, together with other elements such as labels, poly-lines,polygons, circles, etc. are called overlays […]
How to use baidu map api to add controls on the map?
In previous tutorial of baidu map api, we’ve learned how to use baidu map api to display a map on web page. That is exiting, but the displayed map seems […]
How to use baidu map api to display a map?
Here is the official guide of baidu map api to display a map, but it does not work if you copy paste it into your web page. <!DOCTYPE html> <html> […]
jQuery selectors
I will definitely forget the syntax of jQuery selectors if I do not write jQuery code for some days. So it is better to list them here as a memo. […]
how to get text of element in jQuery?
To get the text value of element, you can: use .text() <!DOCTYPE html> <html> <head> <meta charset=utf-8 /> <script src=”jquery.min.js”></script> </head> <body> <div>aa<b>bb</b></div> <div>cc</div> <script> alert($(“div”).text()); </script> </body> </html> This […]
prototype and __proto__
Every object in javascript has a __proto__ property. The value of __proto__ is the prototype property of its construction function, or null if the object is not constructed by a […]