JavaScript make websites more interactive by accessing and modifying the contents. HTML is an element consist of the opening and closing tags, plus it's contents. CSS uses rules to indicate how the contents should be displayed, each rule has selector and declaration block.
There are many steps to write Script:
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Define the goal
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Design the script
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Code each step
Some codes on JavaScript :
var color = 'beige'; : the value of color is now beige
var area = 3*2; :the value of area is now 6
JavaScript contains mathematical operates such as:
*addition +
*subtraction -
*division /