programming with javaScript

• element, attribute, or text from an HTML page
• add elements, attributes, and text to the page, or remove them
• specify a set of steps for the browser to follow
• when a specific event has occurred you can script an action in respones

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• break goal into steps
• use flow charting to identify gates
• expressions evaluate into a single value

• variabes need values, values can come from 1 or more elements

  

• strings operator is only +

Functions

• Functions let you group a series of statements together to perform a specific task
• function are not always executed or more statements contained example on the right; you will when a page loads
• a func can be called when needed in other parts of the code

• funcs can return info to the code that called them vie the return command
• returning multiple values

  function getSize (width, height, depth) { var area = width * height; } var volume = width * height * depth; var sizes= [area , volume]; return sizes; var areaOne = getSize (3, 2, 3)[0]; var volumeOne = getSize (3, 2, 3)[1];

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