30 lines
824 B
HTML
30 lines
824 B
HTML
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<html>
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<head>
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<title>Example 7.10</title>
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<script>
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function getValue()
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{
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var numMice = 12;
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document.getElementById('first').innerHTML = (numMice);
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numMice = changeValue(numMice);
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document.getElementById('third').innerHTML = (numMice);
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}
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function changeValue(x)
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{
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var x = 5;
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document.getElementById('second').innerHTML = (x);
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return x;
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}
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</script>
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</head>
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<body><table align="center" width = "70%"><tr><td><br />
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<input type ="button" onclick="getValue()" value = "Can you change the number? Try it"><br />
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<h3>The value of numMice is: <span id = "first"> </span></h3>
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<h3>The value of x, in the changeValue() function is: <span id = "second"> </span></h3>
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<h3>The value of numMice after calling the changeValue() function is: <span id = "third"> </span></h3>
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</td></tr></table>
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</body>
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</html>
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