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Óï·¨ 1
re = /
pattern
/
[flags
]
Óï·¨ 2
re = new RegExp("
pattern
",
["
flags
"
])
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re
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Pattern
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£¬Óà "/"
×Ö·û·Ö¸ôģʽ¡£Èç¹ûÓÃÓï·¨ 2
£¬ÓÃÒýºÅ½«Ä£Ê½ÒýÆðÀ´¡£
flags
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ÒªÓÃÒýºÅ½« flag
ÒýÆðÀ´¡£±êÖ¾¿ÉÒÔ×éºÏʹÓ㬿ÉÓõÄÓУº
g
£¨È«ÎIJéÕÒ³öÏÖµÄËùÓÐ pattern
£©
i
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m
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”aaa/bb/cc”
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/
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1
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Var srcStr = “aaa/bb/cc”;
srcStr.replace(/[^/]*/g,"");
Óï·¨
2
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var re = new
RegExp("[^/]","g");
var srcStr = srcStr.replace(re,"");
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//
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2
µÄ·½Ê½¡£¾ßÌåʹÓÃÈçÏ£º
Var mSplitString = “/”;
var re = new
RegExp("[^"+mSplitString+"]","g");
var str = srcStr.replace(re,"");


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  var patrn=/^[0-9]{1,20}$/;      
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