1 function testExecResultType() {
2 var txt = "mom and dad and baby";
3 var pattern = /mom (and day (and baby)?)?/ig;
4 var match = pattern.exec(txt);
5 document.writeln("<br>match's type is instanceof array:" + (match instanceof Array));
6 document.writeln("<br>Array.isArray(matches):" + Array.isArray(match));
7 }
8
9 function testTelNum() {
10 var p1 = /^1\d{10}$/g;
11 var pattern = new RegExp(p1.source, "g");
12 var telNum1 = "13088888888";
13 var telNum2 = "13300008888";
14 document.writeln("<br>" + telNum1 + " is telNum:" + pattern.test(telNum1));
15 pattern.lastIndex = 0;
16 document.writeln("<br>" + telNum2 + " is telNum:" + pattern.test(telNum2));
17 }
18
19 function testIfIsPatternObjectIsGlobal() {
20 var p = /\w+@\w+\.com/g;
21 var mail = "zhangsan@amail.com";
22 document.writeln("<br>" + mail + " is mail?" + p.test(mail));
23 document.writeln("<br>lastIndex: " + p.lastIndex);
24 p = /^1\d{10}/g;
25 document.writeln("<br>lastIndex: " + p.lastIndex);
26 var telNum = "13088888888";
27 document.writeln("<br>" + telNum +" is telNum? " + p.test(telNum));
28 }
29 testIfIsPatternObjectIsGlobal();
30 //testTelNum();
31 //testExecResultType();
