"Javascript DOM Programming Art" reading notes

1.javascript weakly typed language, explanatory language.

2.javascript data type: string (string), number,Boolean (boolean), Array, object ( Object), null (null), undefined (Undefined).

JavaScript built- in objects and user-defined objects . Host object (provided by the browser)

3. Array index subscript starting from 0.

4. Function: Use the same piece of code multiple times!

Name of variable: multiple words using underline temp_celsius;

Name of function: Hump rule oh;

5.return false: Block The jump of element a! The default behavior is not triggered!

6.http Performance Optimization:

A: Reduce the number of requests.

B: The script file is placed at the end of the document.

C: Compress the code.

7. Pseudo-Protocol: "javascript:"

8. Note DOM Core and html-dom:

1.html-dom code is shorter. But you can only work with Web documents!

"Javascript DOM Programming Art" reading notes