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document.write (`<style id="css"></style><header><img src="uploads/alexmurphy1996/comments_icon.png" align="left" height=23%/><h1>4.Comments,Types and Variables</h1></header><section><article><p>In programming we use comments to explain the code that we write.Comments in javascript are any text after double forward slash -//.</p><p><font color="gray">  /*</br>
        This is a block comment.</br>
        All text within this block is commented out.</br>
  */</font></p><p>In order to assign and store values to a reference so the value can be used again throughout a program, both constants and variables are used.</p><ul><li>Variables are a very important part of programming.In computer science variables are simply named locations in memory where data can be stored.</li></br><li>Constants are the same as variables except they do not change throughout the lifetime of the program.</li></br><li>Variables have a type, some examples are -Strings,Integers,Booleans.</li></ul></br><table align="center"><tr><th><i>Type</i></th><th><i>Example</i></th></tr><tr><td>String</td><td>"hello world"</td></tr><tr><td>Integer</td><td>1,10,533, etc.</td></tr><tr><td>Boolean</td><td>true/false</td></tr></table></br><center><b>Don't worry about the names of the types for now, you'll get by fine without knowing them.</b></center><p>Variables and constants are declared in the following way:</p></br><img src="/uploads/alexmurphy1996/UntitledDiagram.jpg"><p>Constants use <b>const</b> instead of var, but again don't worry, we'll just use var for now.</p></br><p>Statements in JavaScript nearly always end in a semicolon -';'.</br></br><b><i>Examples:</i></b></br><ul><i>var word ="dog";</i>-This statement assigns the string 'dog' to the variable named 'word'.</br></br><i>var x =1.265;</i> <span style:"padding-left:5em">- This statement assigns the float value 1.265 the the variable named 'x'.</span></ul></p></br></br><h2>Exercise4.1</h2><p>Follow<a href="https://ancientbrain.com/world.php?world=1665807120" onclick="tbc()">this link</a> to be brought to the World we are editing for this lesson. Clone the world and open the editor.</p></br><p align="center"><iframe style='width:30vw; height:20vw; border:1px solid black;' scrolling=no src='https://ancientbrain.com/embed.php?world=1665807120' align="middle"></iframe></br></br><p><b>1)</b> Uncomment the variable named <b>string</b> and run the world.Set a word of your choice to it and run the world again.</p></br><img src="uploads/alexmurphy1996/MakeLotsOfThem.png" width=35% height=45% style="float:right"><p><b>2)</b> Declare a variable named <b>amount</b> and assign an integer to it to show your string more times.</p></br><p><b>3)</b> Declare a variable named <b>colour</b> and assign it to true to change the colour of your string.</p></br></br></br><h2>Exercise4.2</h2></br><p><b>1)</b> Declare variable named <b>chasing</b>,set it to true and run the world.You will now witness a game of chasing being played out.</p></br><p><b>2)</b>Upload your own images to be the chaser and the runner.Then update the appropriate variables to display your own characters.</p></br><p><b>3)</b>Upload your own sound effect for the end of the game and update the song variable appropriately.</p></br><p><b>4)</b>Make the funniest game of chasing you can.</p></br></br></br><center><button class="btn success" onclick="move_on()" id="l2">Now let's do some calculations!</button><center></article><nav id="nav"></nav></section>`);
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