reading-notes

Read 03 in 201

From the Duckett HTML book:

1. Chapter 3: “Lists”
   • There are lots of occasions when we need to use lists. HTML provides us with three different types:
     1. Ordered lists are lists where each item in the list is numbered. For example, the list might be a set of steps for a recipe that must be performed in order, or a legal contract where each point needs to be identified by a section number.
     2. Unordered lists are lists that begin with a bullet point (rather than characters that indicate order).
     3. Definition lists are made up of a set of terms along with the definitions for each of those terms.
        
        
        
        
2. Chapter 13: “Boxes”
   • Box take tqo dimension :width, height
   • we can limt width & height win min and max value.
   • Border, margin & Padding;
     1. Border :Every box has a border (even if it is not visible or is specified to be 0 pixels wide). The border separates the edge of one box from another.
     2. Margin Margins sit outside the edge of the border. You can set the width of a margin to create a gap between the borders of two adjacent boxes.
     3. Padding Padding is the space between the border of a box and any content contained within it. Adding padding can increase the readability of its contents.
   • It is possible to hide elements using the display and visibility properties.
   • You can use CSS to control the dimensions of a box.
     
     

From the Duckett JS book:

Chapter 4: “Decisions and Loops”

• SWITCH STATEMENTS :A switch statement starts with a variable called the switch value. Each case indicates a possible value for this variable and the code that should run if the variable matches that value.
• TYPE COERCION & WEAK TYPING :If you use a data type JavaScript did not expect, it tries to make sense of the operation rather than report an error
• SHORT CIRCUIT VALUES :Logical operators are processed left to right. They short-circuit (stop) as soon as they have a result - but they return the value that stopped the processing (not necessarily true or fa1se)
• Loops:
  1. For loop: if we need to run code specfic number of times we use for loop , in for loop the condition is usually countar which is used to tell how many times the loop should run.
     
     
  2. While loop: if we don’t know how many times the code should run , we use while loop. the condition can be something other the counter.
     
     
  3. do while loop:it is very similar to the while loop, but has one key difference: it will always run the statements inside the curly braces at least once , even if the condition evaluates to false.
     
     s