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Chapter1 Basic introduction to JavaScript and data types
1-1 introduce
1-2 How to embed script code in web pages
1-3 Comment
1-4 Variables - give things a name
1-5 Type of data - numbers, text, true vs false, etc.
1-6 Processing of text strings
1-7 Array array
Chapter2 JavaScript flow control
2-1 if..else..
2-2 switch statement
2-3 while loop
2-4 for loop
Chapter3 JavaScript functions
3-1 function function
3-2 define a function
3-3 function expression
3-4 variable scope
Chapter4 JavaScript objects
4-1 Object
4-2 create an object
4-3 array in object
4-4 Update and delete attributes in objects
4-5 Add methods to objects
4-6 Loop through the properties in the output object
Chapter5 JavaScript DOM introduction and operation
5-1 DOM operation document interface
5-2 Document tree
5-3 getElementById
5-4 getElementsByTagName
5-5 querySelector 与 querySelectorAll
5-6 Access an element's properties
5-7 Create and insert new nodes into the document
5-8 Insert node at specified position
Chapter6 JavaScript events
6-1 deal with what happened
6-2 How to handle events
6-3 Handle the event that occurs using the object's event handler
6-4 Bind events to objects
6-5 dissemination of events
6-6 Change how events are propagated
6-7 Stop propagating event
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