Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gs

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"\{{(.*?)\}}"; string input = @"kjasgdfkjhg asjgdjasgd kjasghd kjasdgd . () {} {{ sdwfhklsd<dfdfdf///df/ "" ''sdsd >fklsdfljhksdfkjh. /asdfsdf/sfdsdfs()df\sdfsdfsdf][][][{][[] }} {{ try{ var s_5ka={gen204:""xjs2es"",clearcut:32};s_fk(""csies"");s_ka(""window.google.timers.load.t"")&&google.tick(""load"",s_5ka); s__i(""csies"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:emb */ try{ s_fk(""emb""); s__i(""emb"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:emc */ try{ s_fk(""emc""); s__i(""emc"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:emd */ try{ s_fk(""emd""); s__i(""emd"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:eme */ try{ s_fk(""eme""); s__i(""eme"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:sy4o */ try{ var s_2i,s_dka,s_3i,s_fka,s_hla=function(a,b){return a.left<=b.left+b.width&&b.left<=a.left+a.width&&a.top<=b.top+b.height&&b.top<=a.top+a.height};s_fk(""sy4o"");var s_4i=s_d,s_B=s_d,s_5i=s_qd(0),s_6i=s_qd(0),s_7i=s_qd(0),s_gka=function(a,b){window.scrollBy(a,b)},s_8i=function(a,b){window.scrollTo(a,b)},s_9i=s_rd,s_$i=s_rd,s_hka=s_d,s_ika=s_d,s_jka=s_d,s_X$b=s_rd,s_aj=function(){if(document.body){var a=s_6d(document.body).top;s_aj=s_qd(a);return a}return 0},s_E$a=s_lb.match(/ GSA\/([.\d]+)/),s_F$a=s_E$a?s_E$a[1]:"";s_dka=(s_2i=!!s_E$a||!!window.agsa_ext)&&0<=s_Ia(s_F$a,""4"");s_3i=s_2i&&0<=s_Ia(s_F$a,""5.2""); s_fka=s_2i&&0<=s_Ia(s_F$a,""4.3"")&&!(0<=s_Ia(s_F$a,""4.5"")); s__i(""sy4o"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:sy4z */ try{ s_fk(""sy4z"");var s_8ka={},s_$ka=function(a,b,c){var d=c?1:0;if(!s_ka(0!=d?""velour.loadJsInterfaceWithFlags"":""velour.loadJsInterface""))return s_Qe(Error(""G""));a in s_8ka||(s_8ka[a]={});c=s_8ka[a];if(c[b])return c[b];var e=s_Se(),f=0!=d?window.velour.loadJsInterfaceWithFlags(a,b,d):window.velour.loadJsInterface(a,b);d=""google.velourCb.""+a+"".""+b;s_ta(d,{onSuccess:function(){e.resolve(f.getResult())},onFailure:function(){e.reject(a+"".""+b+"" failed to load: ""+f.getError().getMessage())}});f.setCallback(d);return c[b]= e.Mc},s_8la=function(a,b,c,d){for(var e=[a,b,!1],f=2;f<arguments.length;f++)e.push(arguments[f]);return s_ela.apply(null,e)},s_ela=function(a,b,c,d,e){for(var f=s_$ka(a,b,c),g=[],k=4;k<arguments.length;k++)g.push(arguments[k]);return f.then(function(a){return a[d]?a[d].apply(a,g):s_Qe(Error(""Za`""+d))})}; s__i(""sy4z"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:sy64 */ try{ s_fk(""sy64"");var s_xdb,s_ydb=!1,s_Adb=function(){var a=s_D$a;s_hc(window,""beforeunload"",function(){s_ydb||s_xdb.set(""isn"",a)})};if(s_2i){s_xdb=s_ng(""s"",""isn"");var s_D$a;var s_G$a,s_H$a,s_Kib=(s_3j().get(""isn"")||"").split("":"");s_H$a=s_Kib[0];s_G$a=s_Kib[1];if(s_H$a){var s_ajb={};s_D$a=(s_ajb[s_G$a]=s_H$a,s_ajb)}else s_D$a=null;s_D$a&&s_Adb()}; s__i(""sy64"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:aa */ try{ s_fk(""aa""); s__i(""aa"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:abd */ try{ s_fk(""abd"");var s_iz=function(a){for(var b="",c=21,d=0;d<a.length;d++)3!=d%4&&(b+=String.fromCharCode(a[d]^c),c++);return b},s_S5a=s_iz([97,119,115,111,107]),s_T5a=s_iz([97,119,115,111,107,123]),s_U5a=s_iz([118,115,121,107,108,124,104,119,68,127,114,105,114]),s_V5a=s_iz([101,126,118,102,118,125,118,109,126]),s_W5a=s_iz([116,116,115,108]),s_X5a=s_iz([113,115,99,107]),s_Y5a=s_iz([113,115,117,107]),s_Z5a=s_iz([58,127,122,103,121,126,127,98,104,51,109,124,118,123,15,76,81,90,13,95,67,76,64,118]),s__5a=function(a){var b= 0,c;for(c in a)if(a[c].e)if(a[c].b)b++;else return!1;return 0<b},s_05a=function(a){a=a||{};var b={};b[s_X5a]={e:!!a[s_X5a],b:!s_7ma(s_S5a)};b[s_Y5a]={e:!!a[s_Y5a],b:!s_7ma(s_T5a)};return b},s_15a=function(a){var b=[],c;for(c in a)a[c].e&&b.push(c+"":""+(a[c].b?""1"":""0""));return b.join("","")},s_25a=function(a,b){a=String(a);b&&(a+="",""+b);google.log(s_V5a,a)},s_35a=function(a,b,c){c=null!=c?c:2;if(1>c)s_25a(7,b);else{var d=new Image;d.onerror=s_f(s_35a,a,b,c-1);d.src=a}},s_r_b={}; s_hf(""abd"",(s_r_b.init=function(a){a=a||{};if(a[s_W5a]&&s_7ma(s_U5a)){a=s_05a(a);var b=s_15a(a);s__5a(a)?s_25a(1,""0,""+b):s_25a(0,b);s_H.qc(function(){s_35a(s_Z5a,""aa"")})}},s_r_b)); s__i(""abd"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:aspn */ try{ s_fk(""aspn"");var s_0pb=function(a){var b=a.getAttribute(""data-url"");window.open(b,""_blank"",""menubar=no,left=""+((window.screenLeft||window.screenX||0)+Math.max(0,((window.innerWidth||document.documentElement.clientWidth||document.body.clientWidth||0)-445)/2))+"",top=""+((window.screenTop||window.screenY||0)+Math.max(0,((window.innerHeight||document.documentElement.clientHeight||document.body.clientHeight||0)-665)/2))+"",width=445,height=665"");(a=a.getAttribute(""data-ved""))&&google.log("",""&ved=""+a)},s_1xa={}; s_hf(""aspn"",(s_1xa.init=function(){s_Oh(""aspn"",{ota:s_0pb},!0)},s_1xa)); s__i(""aspn"");s_fl(); }catch(e){_DumpException(e)} /* _Module_:sy3g */ try{ }} "; RegexOptions options = RegexOptions.Singleline; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx