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Regular Expression
Test String
Substitution
Replace script tag to amp-iframe
Comments
Top Regular Expressions
Url checker with or without http:// or https://
Match string not containing string
Check if a string only contains numbers
Only letters and numbers
Match elements of a url
Url Validation Regex | Regular Expression - Taha
Match an email address
Validate an ip address
nginx test
match whole word
Match or Validate phone number
Match html tag
Find Substring within a string that begins and ends with paranthesis
Blocking site with unblocked games
Match dates (M/D/YY, M/D/YYY, MM/DD/YY, MM/DD/YYYY)
Empty String
Match if doesn't start with string
RegEx for Json
Checks the length of number and not starts with 0
all except word
Match string not containing string
Check if a string only contains numbers
Only letters and numbers
Match elements of a url
Url Validation Regex | Regular Expression - Taha
Match an email address
Validate an ip address
nginx test
match whole word
Match or Validate phone number
Match html tag
Find Substring within a string that begins and ends with paranthesis
Blocking site with unblocked games
Match dates (M/D/YY, M/D/YYY, MM/DD/YY, MM/DD/YYYY)
Empty String
Match if doesn't start with string
RegEx for Json
Checks the length of number and not starts with 0
all except word
Cheat Sheet
| Character classes | |
|---|---|
| . | any character except newline |
| \w \d \s | word, digit, whitespace |
| \W \D \S | not word, digit, whitespace |
| [abc] | any of a, b, or c |
| [^abc] | not a, b, or c |
| [a-g] | character between a & g |
| Anchors | |
| ^abc$ | start / end of the string |
| \b | word boundary |
| Escaped characters | |
| \. \* \\ | escaped special characters |
| \t \n \r | tab, linefeed, carriage return |
| \u00A9 | unicode escaped © |
| Groups & Lookaround | |
| (abc) | capture group |
| \1 | backreference to group #1 |
| (?:abc) | non-capturing group |
| (?=abc) | positive lookahead |
| (?!abc) | negative lookahead |
| Quantifiers & Alternation | |
| a* a+ a? | 0 or more, 1 or more, 0 or 1 |
| a{5} a{2,} | exactly five, two or more |
| a{1,3} | between one & three |
| a+? a{2,}? | match as few as possible |
| ab|cd | match ab or cd |
)/igm"; var t = dan.el("#cheatsheet");
t.style.display = "none", Docs.getItem("cheatsheet").desc = t.innerHTML, e.setExpression(DocView.DEFAULT_EXPRESSION).setSubstitution(DocView.DEFAULT_SUBSTITUTION), e.resetHistory();
var o = new LibView(dan.el("#libview"), Docs.content.library);
this.libView = o, o.docView = e, e.libView = o, ExpressionModel.docView = e, ExpressionModel.saveState(), Settings.trackVisit(), Settings.cleanSaveTokens(), this.navigate()
}
}, i.handleHistoryChange = function() {
this.navigate()
}, i.navigate = function() {
var e = document.location.toString(),
i = /[\/#\?]([\w\d]+)$/gi.exec(e),
t = null;
if (i && (t = i[1]), ExpressionModel.id != dan.idToNumber(t) + "")
if (dan.isIDValid(t)) {
var o = this;
ServerModel.getPatternByID(t).then(function(e) {
ExpressionModel.setLastSave(e);
var i = dan.parsePattern(e.pattern);
o.docView.populateAll(i.ex, i.flags, e.content, e.replace)
}, function() {
BrowserHistory.go()
})
} else BrowserHistory.go()
}, i.showVideo = function(e) {
var i = null,
t = dan.el(".video");
e !== !1 ? (dan.removeClass(t, "hidden"), t.addEventListener("click", this.handleVideoCloseProxy), i = "playVideo", this._ctaAnimation.stop = !0) : (dan.addClass(t, "hidden"), t.removeEventListener("click", this.handleVideoCloseProxy), i = "pauseVideo");
var o = dan.el(".video iframe").contentWindow;
o.postMessage('{"event":"command","func":"' + i + '","args":""}', "*")
}, i.handleVideoClick = function() {
this.showVideo(!1)
}, window.RegExr = e
}(), WebFont.load({
google: {
families: ["Source Code Pro:400,700", "Cabin:400,700"],
fontinactive: function() {
WebFont.load({
custom: {
families: ["Source Code Pro:400,700", "Cabin:400,700"],
urls: ["css/fontFallback.css"]
}
})
}
},
active: function() {
window.regexr = new window.RegExr
}
});
