超强JS(javascript)正则类第二版资源-CSDN文库

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javascript正则表达式

JS正则表达式

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RegExp2.rar （1个子文件）

RegExps.js 8KB

/* * JS正则表达式类 * 例： * var str="<html><script type='text/javascript'>var a=10;</script><body><script type='text/javascript'>var b=10;</script><a href='javascript:;'/>aaaa< /a ><img src='abc.jpg' id='abcd' alt='abc你好' /><a href='index.php'>你好</a></body></html>"; * var reg=new RegExps(); * var s=reg.GetTag(str,'img'); * alert(reg.GetAttrib(s[0],'alt')); * alert(reg.Is('.*',"b")); * var as=reg.Get(str,"<script type='text/javascript'>","</script>"); * alert(reg.GetTagName(str,new Array('html','body','script'),0)); * alert(reg.getElememtById(str,'abcd')); JS正则表达式类================================= * 方法列表 * ============================================== * GetTag(string,tag); 反回数组 * ============================================== * GetTagName(str,new Array()[,0]);反回字符串* ============================================== * getElememtBy(string,name,value);反回字符串* ============================================== * getElememtById(string,id); 反回字符串* ============================================== * getElememtByName(string,name); 反回字符串* ============================================== * GetAttrib(string,Attrib); 反回字符串* ============================================== * Get(string,start,end); 反回数组 * ============================================== * GetText(string); 反回字符串 * ============================================== * ClsHtml(string); 反回字符串 * ============================================== * ClsScript(string); 反回字符串 * ============================================== * ClsCss(string); 反回字符串 * ============================================== * FindString(string,str);反回布尔型 * ============================================== * Is(str,string); 反回布尔型 * ============================================== * Trim(string|Array); 反回字符串 | 数组 * ============================================== * Delete(string,value); 反回字符串 * ============================================== */ function RegExps(){ this.GetTag=function(string,tag){ if(tag.toLowerCase()=='img') var regexp=new RegExp("\<"+tag+"((.|\r\n)*?)\>","gi"); else var regexp=new RegExp("\<"+tag+"((.|\r\n)*?)\>((.|\r\n)*?)\<((.|\r\n)*?)\/"+tag+"((.|\r\n)*?)\>","gi"); var tags= string.match(regexp); if(tags==null) return new Array(""); else return tags; } this.GetTagName=function(string,name,id){ if(string==null || name==null)return false; var strings=new Array(string); if(typeof(name)=="object"){ for(var i=0;i<name.length;i++){ strings.length=0; strings=this.GetTag(string,name[i]); if(strings==null)return ""; string=strings[0]; } if(id==null) return strings; else return strings[id]; } else{ strings=this.GetTag(string,name); if(id==null) return strings; else return strings[id]; } } this.getElememtBy=function(string,name,value){ if(name==null || string==null || value==null)return false; var regexp=new RegExp("(<([^>]*?) "+name+"=('| |\")"+value+"('| |\")((.|\r\n)*?)>)","gi"); var strings=string.match(regexp); if(strings!=null){ var tagObject=strings[0]; regexp=new RegExp("[^< ]* ","gi"); strings=strings[0].match(regexp); if(strings==null) return null; else{ strings[0]=strings[0].replace(/^( |　)*/,''); strings[0]=strings[0].replace(/( |　)*$/,''); if(strings[0].toLowerCase()=='img'){ strings[0]=tagObject; } else{ regexp=new RegExp("(<([^>]*?) "+name+"=('| |\")"+value+"('| |\")((.|\r\n)*?)>((.|\r\n)*?)<((.|\r\n)*?)/"+strings[0]+"((.|\r\n)*?)>)","gi"); strings=string.match(regexp); } if(strings==null) return null; else return strings[0]; } } } this.getElememtById=function(string,id){ if(id==null || string==null)return false; var regexp=new RegExp("(<([^>]*?) id=('| |\")"+id+"('| |\")((.|\r\n)*?)>)","gi"); var strings=string.match(regexp); if(strings!=null){ var tagObject=strings[0]; regexp=new RegExp("[^< ]* ","gi"); strings=strings[0].match(regexp); if(strings==null) return null; else{ strings[0]=strings[0].replace(/^( |　)*/,''); strings[0]=strings[0].replace(/( |　)*$/,''); if(strings[0].toLowerCase()=='img'){ strings[0]=tagObject; } else{ regexp=new RegExp("(<([^>]*?) id=('| |\")"+id+"('| |\")((.|\r\n)*?)>((.|\r\n)*?)<((.|\r\n)*?)/"+strings[0]+"((.|\r\n)*?)>)","gi"); strings=string.match(regexp); } if(strings==null) return null; else return strings[0]; } } } this.getElememtByName=function(string,name){ if(name==null || string==null)return false; var regexp=new RegExp("(<([^>]*?) name=('| |\")"+name+"('| |\")((.|\r\n)*?)>)","gi"); var strings=string.match(regexp); if(strings!=null){ var tagObject=strings[0]; regexp=new RegExp("[^< ]* ","gi"); strings=strings[0].match(regexp); if(strings==null) return null; else{ strings[0]=strings[0].replace(/^( |　)*/,''); strings[0]=strings[0].replace(/( |　)*$/,''); if(strings[0].toLowerCase()=='img'){ strings[0]=tagObject; } else{ regexp=new RegExp("(<([^>]*?) name=('| |\")"+name+"('| |\")((.|\r\n)*?)>((.|\r\n)*?)<((.|\r\n)*?)/"+strings[0]+"((.|\r\n)*?)>)","gi"); strings=string.match(regexp); } if(strings==null) return null; else return strings[0]; } } } this.GetAttrib=function(string,Attrib){ var regexp=new RegExp(" "+Attrib+"=((.|\r\n)*?)( |\>|/\>)","gi"); var Attribs=string.match(regexp); if(Attribs!=null){ regexp=new RegExp("(^ "+Attrib+"=)","gi"); Attribs[0]=Attribs[0].replace(regexp,''); Attribs[0]=Attribs[0].replace(/( |　|'|"| >|　>|'>|">| \/>|　\/>|'\/>|"\/>)*$/,''); Attribs[0]=Attribs[0].replace(/^( |　|'|")*/,''); return Attribs[0]; } } this.Get=function(string,start,end){ var regexp=new RegExp(start+"((.|\r\n)*?)"+end,"g"); var strings=string.match(regexp); var objs=new Array(); objs[0]=new Array(); objs[1]=new Array(); if(strings!=null){ for(var i=0;i<strings.length;i++){ var regexp2=new RegExp("(^"+start+"|"+end+"$)","g"); objs[1][i] = strings[i].replace(regexp2,''); objs[0][i] = strings[i]; } return objs; } } this.FindString=function(string,str){ if(id!=null) var regexp=new RegExp("((.|\r\n)*?)"+str+"((.|\r\n)*?)","gi"); else var regexp=new RegExp("((.|\r\n)*?)"+str+"((.|\r\n)*?)"); if(string.search(regexp)==0) return true; else return false; } this.Is=function(str,string){ var regexp=new RegExp(str); return regexp.test(string); } this.GetText=function(string){ string=this.ClsScript(string); string=this.ClsCss(string); string=this.ClsHtml(string); return string; } this.ClsHtml=function(string){ return string.replace(/(\<((.|\r\n)*?)\>)/gi,''); } this.ClsScript=function(string){ return string.replace(/\<script ((.|\r\n)*?)\>((.|\r\n)*?)\<((.|\r\n)*?)\/script((.|\r\n)*?)\>/gi,''); } this.ClsCss=function(string){ return string.replace(/\<style ((.|\r\n)*?)\>((.|\r\n)*?)\<((.|\r\n)*?)\/style((.|\r\n)*?)\>/gi,''); } this.Trim=function(strings){ if(typeof(strings)=="object"){ for(var i=0;i<strings.length;i++){ if(strings[i]=="" || strings[i]==null){ strings[i]=strings[strings.length-1]; strings.length=strings.length-1; } else{ if(typeof(strings[i])=="object")strings[i]=this.Trim(strings[i]); } }

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