Andor's Tumblog

“A filter effect is a graphical operation that is applied to an element as it is drawn into the document. It is an image-based effect, in that it takes zero or more images as input, a number of parameters specific to the effect, and then produces an image as output.”

PHP 5.4.0 will have a built in web development server which can be started right inside the same folder where you are developing your project codes.

Attributes are in your HTML text document/file, whereas properties are in HTML DOM tree. This means that attributes do not change and always carry initial (default) values. However, HTML properties can change, for example when user checks a checkbox, inputs text to textarea or uses JavaScript to change the property value.

shortcut 非标准，只是为了兼容 IE。实际上，如果只指定 icon 的话，几乎所有的浏览器都会正确加载（除了没听说过的 SeaMonkey）。