JS Study Note 2015-4-17 (fourth day)

Array application:

var arr=[]//The brackets are like a warehouse;

The subscript of the array starts with 0;

ARR[ARR.LENGTH-1]

Arr.push ("I Am the Last")//To add data to the last digit of the array;

Small example, a lot of rotation switch graph switch button, the reason that use a tag, is a:hover state, IE is also supported, more convenient also convenience, save again to do compatibility;

The array is very powerful, for example, in the case of the picture switching, the array is used, the current order of the picture and the name of the image can be saved with different 2 arrays, then read and change the value by JS;

When encountering reusable code snippets, you naturally think of using functions;

The weekend to do the teacher decorate 2 exercises;

JS Study Note 2015-4-17 (fourth day)