1 javascript ÕýÔò
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ÉùÃ÷javascript ÕýÔò
±í´ïʽ
¸´ÖÆ´úÂë
 ´úÂëÈçÏÂ:
 
var reCat = new RegExp("cat"); 
ÄãÒ²¿ÉÒÔ 
var reCat = /cat/; //Perl ·ç¸ñ £¨ÍƼö£© 
 
2 ѧϰ×î³£ÓÃµÄ test exec match search replace split 6¸ö·½·¨ 
1£© test ¼ì²éÖ¸¶¨µÄ×Ö·û´®ÊÇ·ñ´æÔÚ
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 ´úÂëÈçÏÂ:
 
var data = "123123"; 
var reCat = /123/gi; 
alert(reCat.test(data)); //true 
//¼ì²é×Ö·ûÊÇ·ñ´æÔÚ g ¼ÌÐøÍùÏÂ×ß i ²»Çø·Ö´óСд 
 
2£© exec ·µ»Ø²éѯֵ
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 ´úÂëÈçÏÂ:
 
var data = "123123,213,12312,312,3,Cat,cat,dsfsdfs,"; 
var reCat = /cat/i; 
alert(reCat.exec(data)); //Cat 
 
3£©match µÃµ½²éѯÊý×é
¸´ÖÆ´úÂë
 ´úÂëÈçÏÂ:
 
var data = "123123,213,12312,312,3,Cat,cat,dsfsdfs,"; 
var reCat = /cat/gi; 
var arrMactches = data.match(reCat) 
for (var i=0;i < arrMactches.length ; i++) 
{ 
alert(arrMactches[i]); //Cat cat 
} 
 
4£© search ·µ»ØËÑË÷λÖà ÀàËÆÓÚindexof
¸´ÖÆ´úÂë
 ´úÂëÈçÏÂ:
 
var data = "123123,213,12312,312,3,Cat,cat,dsfsdfs,"; 
var reCat = /cat/gi; 
alert(data.search(reCat)); //23 
 
5£© replace Ìæ»»×Ö·û ÀûÓÃÕýÔò
Ìæ»»
¸´ÖÆ´úÂë
 ´úÂëÈçÏÂ:
 
var data = "123123,213,12312,312,3,Cat,cat,dsfsdfs,"; 
var reCat = /cat/gi; 
alert(data.replace(reCat,"libinqq")); 
 
6£©split ÀûÓÃÕýÔò
·Ö¸îÊý×é
¸´ÖÆ´úÂë
 ´úÂëÈçÏÂ:
 
var data = "123123,213,12312,312,3,Cat,cat,dsfsdfs,"; 
var reCat = /\,/; 
var arrdata = data.split(reCat); 
for (var i = 0; i < arrdata.length; i++) 
{ 
alert(arrdata[i]); 
} 
 
3 ѧϰÏ ¼òµ¥Àà ¸ºÏòÀà ·¶Î§Àà ×éºÏÀà
¸´ÖÆ´úÂë
 ´úÂëÈçÏÂ:
 
//¼òµ¥Àà 
var data = "1libinqq,2libinqq,3libinqq,4libinqq"; 
var reCat = /[123]libinqq/gi; 
var arrdata = data.match(reCat); 
for (var i = 0; i < arrdata.length; i++) 
{ 
alert(arrdata[i]); // 1libinqq 2libinqq 3libinqq 
} 
//¸ºÏòÀà 
var data = "alibinqq,1libinqq,2libinqq,3libinqq,4libinqq"; //\u0062cf 
var reCat = /[^a123]libinqq/gi; 
var arrdata = data.matc
    
     
	
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