源代码:
<html> <body> <script type="text/javascript"> <!-- var age = 15; if( age > 18 ){ document.write("<b>Qualifies for driving</b>"); }else{ document.write("<b>Does not qualify for driving</b>"); } //--> </script> <p>Set the variable to different value and then try...</p> </body> </html>
运行结果：
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