01 Jul Javascript program, computer science homework help
Question Description
Write a simple HTML/Javascript program which is capable of computing the area of a rectangle as follows:
·
On the HTML page, display:
Two “input” fields where a human can enter a number/value
One field should be labeled on the screen as “Length”
One field should be labeled on the screen as “Width”
A button labeled “Calculate Area”. Clicking this button should:
Calculate and Display the area value of the shape in an “Alert Box”utilizing the user-provided values in the input fields.
Additionally, if the Length and Width are equal, an “alert box” should display “Hey, that’s just a square!”.
In a separate Javascript file
Create a function called getShapeArera which:
Performs the appropriate calculation and updates the page as described above.
(This is the function that should be called when when the user clicks the “Calculate Area” button described above.)
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Usually, lines of textual data must be properly aligned on a screen or page for easy viewing, Write a JavaScript function called stringPad(str, padChar)that accepts three parameters as follows:
· An arbitrary string (like a name, for example)
· A string to be used as a “padding character” to fill in extra space (see the example)
· The total length of the new string (see example)
The function should return a new string
· With an LOWER-cased version of str following the “pad characters”
· Such that the total length of the new string is equal to the new provided
· If the desired “total length” is less than the length of the input string, then just the input string is returned.
For example:
A call to stringPad(“Hello”, “*”, 10) would return: *****hello
A call to stringPad(“xYZ”, “-“, 5) would return: –xyz
A call to stringPad(“AbCDe”, “#”, 2) would return: abcde
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