Espressione regolare Javascript per convalidare l'URL

Question

Sto convalidando l'URL con la seguente espressione regolare. Voglio convalidare google.com ma restituisce false. Che cosa può essere modificato in R.E qui sotto per convalidare google.com.

console.log(learnRegExp('http://www.google-com.123')); // false 
console.log(learnRegExp('https://www.google-com.com')); // true 
console.log(learnRegExp('http://google-com.com')); // true 
console.log(learnRegExp('http://google.com')); //true 
console.log(learnRegExp('google.com')); //false 

function learnRegExp(){ 
    return /^(ftp|https?):\/\/+(www\.)?[a-z0-9\-\.]{3,}\.[a-z]{3}$/.test(learnRegExp.arguments[0]); 
} 

Answer 1

/(http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/ 

Answer 2

^... simbolo sta dicendo inizia con così il registro finale ha un senso, vale a dire la stringa non inizia con ftp o http (s). Stai anche dicendo con che il fine che la stringa deve terminare con tre lettere che ancora una volta dove fallisce (riga 2) non finisce così. Alcune modifiche minori e dovresti essere lì.

Answer 3

Ecco qui, è necessario rendere "ftp/http (s): //" non un MUST. Uso "?" per questo.

function learnRegExp(){ 
    return /((ftp|https?):\/\/)?(www\.)?[a-z0-9\-\.]{3,}\.[a-z]{3}$/.test(learnRegExp.arguments[0]); 
} 

Answer 4

Questa convalidare l'URL in generale

console.log('http://www.google-com.123.com', validateUrl('http://www.google-com.123.com')); // true 
 
console.log('http://www.google-com.123', validateUrl('http://www.google-com.123')); // false 
 
console.log('https://www.google-com.com', validateUrl('https://www.google-com.com')); // true 
 
console.log('http://google-com.com', validateUrl('http://google-com.com')); // true 
 
console.log('http://google.com', validateUrl('http://google.com')); //true 
 
console.log('google.com', validateUrl('google.com')); //false 
 
console.log('http://www.gfh.', validateUrl('http://www.gfh.')); //false 
 
console.log('http://www.gfh.c', validateUrl('http://www.gfh.c')); //false 
 
console.log('http://www.gfh:800000', validateUrl('http://www.gfh:800000')); //false 
 
console.log('www.google.com ', validateUrl('www.google.com ')); //false 
 
console.log('http://google', validateUrl('http://google')); //false 
 
console.log('//cdnblabla.cloudfront.net/css/app.css', validateUrl('//cdnblabla.cloudfront.net/css/app.css')); //true 
 

 
function validateUrl(value) { 
 
    return /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(value); 
 
}

deve corrispondere

["//www.google.com", "//cdnblabla.cloudfront.net/css/app.css", "http://✪df.ws/123", "http://userid:password@example.com:8080", "http://userid:password@example.com:8080/", "http://userid@example.com", "http://userid@example.com/", "http://userid@example.com:8080", "http://userid@example.com:8080/", "http://userid:password@example.com", "http://userid:password@example.com/", "http://142.42.1.1/", "http://142.42.1.1:8080/", "http://➡.ws/䨹", "http://⌘.ws", "http://⌘.ws/", "http://foo.com/blah_(wikipedia)#cite-1", "http://foo.com/blah_(wikipedia)_blah#cite-1", "http://foo.com/unicode_(✪)_in_parens", "http://foo.com/(something)?after=parens", "http://☺.damowmow.com/", "http://code.google.com/events/#&product=browser", "http://j.mp", "ftp://foo.bar/baz", "http://foo.bar/?q=Test%20URL-encoded%20stuff", "http://مثال.إختبار", "http://例子.测试"].map(function(url) { 
 
    console.log(url, validateUrl(url)); 
 
}); 
 

 
function validateUrl(value) { 
 
    return /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(value); 
 
}

dovesse fallire

["http://", "http://.", "http://..", "http://../", "http://?", "http://??", "http://??/", "http://#", "http://##", "http://##/", "http://foo.bar?q=Spaces should be encoded", "//", "//a", "///a", "///", "http:///a", "foo.com", "rdar://1234", "h://test", "http:// shouldfail.com", ":// should fail", "http://foo.bar/foo(bar)baz quux", "ftps://foo.bar/", "http://-error-.invalid/", "http://-a.b.co", "http://a.b-.co", "http://0.0.0.0", "http://10.1.1.0", "http://10.1.1.255", "http://224.1.1.1", "http://1.1.1.1.1", "http://123.123.123", "http://3628126748", "http://.www.foo.bar/", "http://www.foo.bar./", "http://.www.foo.bar./", "http://10.1.1.1", "http://10.1.1.254"].map(function(url) { 
 
    console.log(url, validateUrl(url)); 
 
}); 
 

 
function validateUrl(value) { 
 
    return /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(value); 
 
}

Come funziona

// protocol identifier 
"(?:(?:(?:https?|ftp):)?//)" 
// user:pass authentication 
"(?:\\S+(?::\\S*)?@)?" 
"(?:" 
// IP address exclusion 
// private & local networks 
"(?!(?:10|127)(?:\\.\\d{1,3}){3})" 
"(?!(?:169\\.254|192\\.168)(?:\\.\\d{1,3}){2})" 
"(?!172\\.(?:1[6-9]|2\\d|3[0-1])(?:\\.\\d{1,3}){2})" 
// IP address dotted notation octets 
// excludes loopback network 0.0.0.0 
// excludes reserved space >= 224.0.0.0 
// excludes network & broacast addresses 
// (first & last IP address of each class) 
"(?:[1-9]\\d?|1\\d\\d|2[01]\\d|22[0-3])" 
"(?:\\.(?:1?\\d{1,2}|2[0-4]\\d|25[0-5])){2}" 
"(?:\\.(?:[1-9]\\d?|1\\d\\d|2[0-4]\\d|25[0-4]))" 
"|" 
// host name 
"(?:(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)" 
// domain name 
"(?:\\.(?:[a-z\\u00a1-\\uffff0-9]-*)*[a-z\\u00a1-\\uffff0-9]+)*" 
// TLD identifier 
"(?:\\.(?:[a-z\\u00a1-\\uffff]{2,})))" 
// port number 
"(?::\\d{2,5})?" 
// resource path 
"(?:[/?#]\\S*)?" 

Tutto questo viene da questo gist, mi auguro che questo riempie tutte le vostre esigenze

Answer 5

Questo è perfetto per me. Spero che sia perfetto per qualcun altro! :)

/^((https?):\/\/)?([w|W]{3}\.)+[a-zA-Z0-9\-\.]{3,}\.[a-zA-Z]{2,}(\.[a-zA-Z]{2,})?$/