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How does js use rules to find the content specified in the string
1. The string str= "zz=aaa,bb=bbb,cc=ccc;User=ZZZ&zz=aaa1&bb=bbb1&cc=ccc1 " 2. To implement, for example, I pass in the parameter zz, and find the value of aaa1 in the zz=aaa1 after User=ZZZ. How to write the corresponding rule? ...
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/ ^ (18 [0-9] {9}) | (15 [0-9] {9}) $/ regular matching problem
^ (18 [0-9] {9}) | (15 [0-9] {9}) $ Why the rule matches 1844444444444444 . My understanding of this rule is starting with 18 or 15 followed by 9 digits 0-9 .
Note: I know there are other ways to write the rules of mobile phone numbers. I just ...
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How regular expressions match spaces, [], ()
The range of characters is text, letters, numbers and "( ", ") ", "[ ", "] ", "space "; how should the rule of up to 20 words be written ...
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How to write regular matching for such URL?
need to match:
https: www.example.com
https: www.example.com demo
https: www.example.com demo abc
https: www.example.com demo abc 123.html ()
mismatch:
https: www.example.com demo abc efg123.html
...
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In Js, the value of the specified key in the cookie name is fetched with the rule.
1. The string in the cookie fetched by the foreground is a connection of multiple cookie, for example, these two types:
var str = "OnlineCookie=OnlineCookie&UserType=11111111111111111&UID=39&UserName=; UID=; UserType=; UserName=";...
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How do regular expressions match / followed by numbers and letters?
MEDU1778421 FEJ7296886
FCIU2741867 FEJ7296887
GLDU9472098 FEJ7296888
I want to match the following numbers and replace them with spaces for example, how to match letters and spaces
MEDU1778421
FCIU2741867
GLDU9472098
...
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How do I replace one of the matches when there are multiple regular matches?
as shown in the figure: I use str.replace ( (null) , "jsonCallBack "); can only replace the first null, , but what should I do to replace the third?
the following is the string "< input type= " radio "name= " p_date_type_sl_sl_sl "value= " i...
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The problem of regular expressions
var newsname; ctrl.checkNameLegal = function () { if (ctrl.fileName) {
var exports = ^(?![.])[ u4e00- u9fa5_.a-zA-Z0-9]+$ ig;
if (exports.test(ctrl.fileName)) {
newsname = ctrl.fileName;
} else {
ctrl.fileName = newsname;
}
} else {
newsname = ...
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How do you regularly match to 12-128, but not to the first two digits 12 of 129?
when trying to use regular matching 12-128, it is found that it can match to 129, such as the question.
192.168.0.(12[0-8]|1[0-1][0-9]|[2-9][0-9]|1[2-9])
True is returned when matches 129. judgment 255 will also match the first two digits 25.
h...
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How to write regular: add a space every 4 digits and be able to delete spaces?
1. Requirements: write a regular 2 that can automatically add a space for every 4 digits written. Problem: the regular (or incorrect) is written out, but the spaces cannot be deleted! 3. Picture
4. Code innput listening:
`$("ul.information-...
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Ask for a rule! Get the number and process it, and then replace the original number.
const datas =[
"https: img.codeshelper.com upload img 2021 03 09 1tcsu5c0vun5800.png",
"https: img.codeshelper.com upload img 2021 03 09 mc3p5hxjed25801.png",
"https: img.codeshelper.com upload img 2021 03 09 b0sxs...
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Match two comments and the content between them, how to write the rule?
*start*
import aaa ;
*end*
let a={
b: c
*start*
d: e
*end*
}
now you want to match all the content from * start* to * end* , and replace it with ", , that is, all that s left in the above code is: .
let a={
b:...
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Regular Filter tag and retain the attributes inside the tag
A HTML in a text box contains text and img tags for example
<img src=".. .. static images express 4.gif" alt="[em_4]"><img src=".. .. static images express 4.gif" alt="[em_4]">
make Filter look like...
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The problem of regular expressions matching url
the following regular expression can successfully configure key, (^ |) in url. Doesn t it mean start or empty? how can it match & what s wrong with it? regular
?ie=utf-8&f=8&rsv_bp=0&rsv_idx=1&tn=baidu&wd=%E6%AD%A3%E5%88%99%E8%A1...
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A small problem with the g parameter of js regular expression
as shown in the figure above: in the first way, the $3.23 is identified as false , but in the second way, only one parameter g is removed and passed. According to principle, the first one should also be passed, please give us guidance!
...
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How does JS regular HTML tag in Filter ()?
example:
(999 < video > < video > )
I want to delete the p tag in parentheses ().
...
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The NBT_USDT, regular representation returns the content before the underscore.
find the underscore through the regular expression, return the previous content, and don t want anything else. ...
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How to use a regular check password that can only have numbers or letters or numbers plus letters?
password requires 1, number 2, letter 3, number + letter ...
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How do js regular expressions match and replace text using the replace method?
for example: abdsdsdfsdf1526614206112164350fskdfskdf1526614199681037404bcmvbcvbmcnvz: match 1526614206112164350 and 1526614199681037404 in the string, add quotation marks on both sides, and process it as follows: abdsdsdfsdf "1526614206112164350 " fskdf...
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String separation error occurred in solving stringObject.split (RegExp)?
The string.split (RegExp) method uses regular expressions to separate strings. An error occurs when the regular expression contains parentheses (), but the value returned through string.match (RegExp) is that I want the correct for example .
var str = ...