<html><head><title>JavaScript RegExp</title></head><body><scripttype="text/javascript">var str ="pap";var pattern =/p.p/g;var result = str.match(pattern);
document.write("Test 1 - returned value : "+ result);
str ="pp";
result = str.match(pattern);
document.write("<br/>Test 2 - returned value : "+ result);</script></body></html>
HTML
输出结果
Test1- returned value : pap
Test2- returned value :null