Frog frog recommendation: use regular expressions to search for emails

Last Update:2018-12-05 Source: Internet

Author: User

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<! --
Frog frog recommendation: use regular expressions to search for emails
Ask the question: Give a string, find 5 emails, and highlight the emails in red (or other display modes ),
The five emails are saved as a string separated by commas and printed out.
-->
<! Doctype HTML public "-// W3C // dtd html 4.0 transitional // en">
<HTML>
<Head>
<Title> new document </title>
<Meta name = "generator" content = "editplus">
<Meta name = "author" content = "frog prince">
<Meta name = "keywords" content = "frog pond">
<Meta name = "Description" content = "">
<Script language = "jscript">
Function wawa_matchmail (STR)
{
/*
* --------------- Wawa_matchmail (STR )-----------------
* Wawa_matchmail (STR)
* Function: search for a substring that matches the mail format in a string, and return a new string that contains five searched mails separated by commas.
* Parameter: Str, string type, master string to be searched.
* Instance: wawa_matchmail ("only@sohu.com, DDD, only163.com ")
* Author: Tianji, frog prince
* Update:
* --------------- Wawa_matchmail (STR )-----------------
*/
// Here I use the match method of the string object.
VaR Re = // W + (-/W +) | (/. /W +) */@ [A-Za-z0-9] + ((/. |-) [A-Za-z0-9] + )*/. [A-Za-z0-9] +/g;
VaR M = mainstring. Match (re );
VaR M1 = ""
For (VAR I = 0; I <M. Length & I <5; I ++ ){
M1 + = m [I]. fontcolor ("blue") + ",";
}
Return (M1 );
}
Function wawa_replacemail (STR)
{
/*
* --------------- Wawa_replacemail (STR )-----------------
* Wawa_replacemail (STR)
* Function: search for a substring that matches the mail format in a string, generate a new string, and use red to represent the part of the email.
* Parameter: Str, string type, master string to be searched.
* Instance: wawa_replacemail ("only@sohu.com, DDD, only163.com ")
* Author: Tianji, frog prince
* Update:
* --------------- Wawa_replacemail (STR )-----------------
*/
// The political expression object and Regexp are used here.
VaR S = '';
// Var Re = new Regexp ("d (B +) (D)", "ig ");
VaR Re = // W + (-/W +) | (/. /W +) */@ [A-Za-z0-9] + ((/. |-) [A-Za-z0-9] + )*/. [A-Za-z0-9] +/g;
VaR J = 0;
While (ARR = re.exe C (STR ))! = NULL)
{
S + = Str. substring (J, (Regexp. lastIndex-RegExp.lastMatch.length ));
S + = Regexp. lastmatch. fontcolor ("red ");
J = Regexp. lastindex
// To familiarize everyone with the attributes of the regular expression object and Regexp object, I listed them. If you want to learn its usage, remove the comments to see the output.
// S + = "======================================== ===== ";
// S + = "$1 returns:" + Regexp. $1 + " ";
// S + = "$2 returns:" + Regexp. $2 + " ";
// S + = "$3 returns:" + Regexp. $3 + " ";
// S + = "input returns:" + Regexp. Input + " ";
// S + = "Index Returns:" + Regexp. index + " ";
// S + = "lastindex returns:" + Regexp. lastindex + " ";
// S + = "lastmatch returns:" + Regexp. lastmatch + " ";
// S + = "leftcontext returns:" + Regexp. leftcontext + " ";
// S + = "rightcontext returns:" + Regexp. rightcontext + " ";
// S + = "lastparen returns:" + Regexp. lastparen + " ";
// S + = "Arr. Index Returns:" + arr. index + " ";
// S + = "Arr. lastindex returns:" + arr. lastindex + " ";
// S + = "Arr. Input returns:" + arr. Input + " ";
// S + = "re. lastindex returns:" + RE. lastindex + " ";
// S + = "re. Source returns:" + RE. Source + " ";
// S + = "======================================== ===== ";
}
S + = Regexp. rightcontext;
Return (s); // return results.
}

</SCRIPT>
</Head>
<Body>
<SCRIPT>
// Define the main string below
VaR mainstring = "frog prince, onlytiancai@sohu.com, 33, three points, guagua@wawa.cn ";
Mainstring + = "only@only.com, AD, 1234 <A> abcd@abcd.com @ ABC </a> sdfsdf feiyang@163.com ";
Mainstring + = "SDF sfd@msn.com.dsfsdf __# Co, I am a autumn tree zhang@yushang.com. Finished, haha ";

// Print the main string below
Document. Write ("original string:". Bold () + " " + mainstring );

// Print the five searched emails below
Document. Write (" 5 Emails:". Bold () + " " + wawa_matchmail (mainstring ));

// Print below to replace the email with a red string
Document. Write (" Replace the string with red:". Bold () + " " + wawa_replacemail (mainstring ));
</SCRIPT>
</Body>
</Html>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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Frog frog recommendation: use regular expressions to search for emails

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