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#1 Fooling around boolean
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Now you see me...
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Timers
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Undefined Values in Arrays
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Array Map and ParseInt
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Variable Scope
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<section class="normal" id="section-gitbook_16">
<h1 id="self-invoking-functions">Self Invoking Functions</h1>
<p>I want to set variable 'testValue' to 3 using a Self Invoking Function, can you help me?</p>
<pre><code>var testValue;
function test() { testValue = 3; }();
</code></pre>
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<pre class="hidden code-solution">SyntaxError: Unexpected token )</pre>
<pre class="hidden code-validation">__match_answer_and_solution__</pre>
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<pre class="hidden code-solution">The value of testValue is undefined because the function has not been autoexecuted.</pre>
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<p>Write the code to execute this function adding only one more character to the sentence.</p>
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<div class="editor" style="height: 40px">var testValue;
function test() { testValue = 3; }();</div>
<pre class="hidden code-solution">var testValue;
!function test() { testValue = 3; }();</pre>
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