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Related Flashcards
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Cards In This Set
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What goes into the script tag for defining an external javascript file
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<script type="text/javascript" src="jsfile.js"></script>
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What is the syntax for an "if" statement
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If (something == 1) { // do something}
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How do you tell the browser that you will be using JavaScript?
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<script type="text/javascript">
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How do you popup a message in a dialog window
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Alert("This will show in a popup window")
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How do you insert a value into an ID on an HTML Page
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Two Parts<p id="ResultsP"></p> in Javascript document.getElementById('ResultsP').innerHTML='Hello World";
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What at the java escape sequences
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backspace; f formfeed;
new line;
carriage return; tab; ` single quote; " double quote; \ backslash; xNN hex number that identifies a character in the Latin-1 character set
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What is invaid in the name of a variable
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Reserved words, cannot start with a number, characters other than numbers, letters and underscore,
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Differences with memory and objects
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Two variables can reference the same object
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Ways to increment a variable
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MyVar= myVar + 1; myVar++; ++myVar
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What is the difference between myVar++ and ++Myvar
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If used in an expression such as myVar=myVar++ * 10 + 1; it multiplies first and then increments by 1 - so this would be 12; if you use myVar=++myVar * 10 + 1, it adds 1 to myVar first making the total 21
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