{"id":1991,"date":"2021-08-19T14:12:23","date_gmt":"2021-08-19T14:12:23","guid":{"rendered":"https:\/\/codeinsightacademy.com\/blog\/?p=1991"},"modified":"2024-01-19T08:33:55","modified_gmt":"2024-01-19T08:33:55","slug":"regex","status":"publish","type":"post","link":"https:\/\/codeinsightacademy.com\/blog\/javascript\/regex\/","title":{"rendered":"RegEx"},"content":{"rendered":"\n

Playground for practice https:\/\/regexr.com\/<\/a> https:\/\/regex101.com\/<\/a>
<\/p>\n\n\n\n

Pattern Matching<\/p>\n\n\n\n

Regex Syntax<\/p>\n\n\n\n

\/<regex pattern>\/<\/code><\/pre>\n\n\n\n
Starts with wild card character<\/p>\n\n\n\n
^<\/code><\/pre>\n\n\n\n
Ends with wcc<\/p>\n\n\n\n
$<\/code><\/pre>\n\n\n\n
set enclosed in<\/p>\n\n\n\n
[set]\n[^invert-set]<\/code><\/pre>\n\n\n\n
only numbers<\/p>\n\n\n\n
^[0-9]+$\n^\\d+$<\/code><\/pre>\n\n\n\n
only characters<\/p>\n\n\n\n
^[a-zA-Z]+$\n^\\w+$<\/code><\/pre>\n\n\n\n
occurance wcc<\/p>\n\n\n\n
* => any number of occurrence\n? => 0 or 1 occurrence\n+ => 1 or many occurrence\n\ne.g. adarsh mishra\nto match 1 space \/adarsh\\s<\/strong>mishra\/\nto match multiple space \/adarsh\\s+<\/strong>mishra\/\nto match 0 or many spaces \/adarsh\\s<\/strong>*mishra\/<\/code><\/pre>\n\n\n\n
no special characters<\/p>\n\n\n\n
^[0-9a-zA-Z\\s]+$<\/code><\/pre>\n\n\n\n
limited characters or numbers<\/p>\n\n\n\n
^[0-9]{6}$\n^[a-z]{3}$<\/code><\/pre>\n\n\n\n
min \/ max range characters or numbers<\/p>\n\n\n\n
^[0-9]{3,6}$\n^[a-z]{3,6}$<\/code><\/pre>\n\n\n\n
OR clause<\/p>\n\n\n\n
^(chacha|bhatija)$<\/code><\/pre>\n\n\n\n
case insensitive<\/p>\n\n\n\n
\/\/i<\/code><\/pre>\n\n\n\n
global check<\/p>\n\n\n\n
\/\/g<\/code><\/pre>\n\n\n\n
search any pattern
(.) e.g. “https:\/\/www.youtube.com\/watch?v=hw_HpTI_Wkw”.match(\/v=(.<\/em>)\/)[1]<\/p>\n\n\n\n
will return video id hw_HpTI_Wkw<\/p>\n\n\n\n
<\/p>\n\n\n\n
<\/p>\n\n\n\n
Assignment<\/p>\n\n\n\n
  1. girls \/ boys name<\/li>
  2. phone number<\/li>
  3. find Indian zip code<\/li>
  4. valid name<\/li>
  5. email id<\/li>
  6. 8-12 character password<\/li>
  7. aadhaar number<\/li>
  8. pancard<\/li>
  9. name starts with vowels<\/li>
  10. names ends with vowels<\/li>
  11. names having only 5 characters<\/li>
  12. credit card number<\/li><\/ol>\n\n\n\n
    Sample Text<\/p>\n\n\n\n
    1234567890
    123453
    DAVPS0412P
    127836320613
    9876543210
    098762
    xyz@yahoo.com
    smita
    &UJMmju7
    shailesh
    143258761937
    priyanka
    abc@gmail.com
    112096851365
    %TGBbgt5
    priya<\/p>\n","protected":false},"excerpt":{"rendered":"
    Playground for practice https:\/\/regexr.com\/ https:\/\/regex101.com\/ Pattern Matching Regex Syntax Starts with wild card character Ends with wcc set enclosed in only numbers only characters occurance wcc no special characters limited characters or numbers min \/ max range characters or numbers OR clause case insensitive global check search any pattern(.) e.g. “https:\/\/www.youtube.com\/watch?v=hw_HpTI_Wkw”.match(\/v=(.)\/)[1] will return video id […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[],"_links":{"self":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts\/1991"}],"collection":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/comments?post=1991"}],"version-history":[{"count":29,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts\/1991\/revisions"}],"predecessor-version":[{"id":2684,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/posts\/1991\/revisions\/2684"}],"wp:attachment":[{"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/media?parent=1991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/categories?post=1991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codeinsightacademy.com\/blog\/wp-json\/wp\/v2\/tags?post=1991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}