{"id":31811,"date":"2023-01-24T21:51:10","date_gmt":"2023-01-24T16:21:10","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-javascript-substr\/"},"modified":"2023-01-24T21:51:10","modified_gmt":"2023-01-24T16:21:10","slug":"solved-javascript-substr","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-javascript-substr\/","title":{"rendered":"[Solved] Javascript SUBSTR"},"content":{"rendered":"

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Basic regular expression<\/p>\n

var str = \"radio_3_5\";\nconsole.log(str.match(\/^[a-z]+_\\d+\/i));\n<\/code><\/pre>\n
And how the reg exp works<\/p>\n
\/       Start of reg exp\n^       Match start of line\n[a-z]+  Match A thru Z one or more times\n_       Match underscore character\n\\d+     Match any number one or more times\n\/       End of Reg Exp\ni       Ignores case\n<\/code><\/pre>\n
Or with split<\/p>\n
var str = \"radio_334_1234\";\nvar parts = str.split(\"_\");\nvar result = parts[0] + \"_\" + parts[1];\n<\/code><\/pre>\n
Or even crazier (would not do)<\/p>\n
var str = \"radio_334_1234\";\nvar result = str.split(\"_\").slice(0,2).join(\"_\");\n<\/code><\/pre>\n<\/p><\/div>\n
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            <\/span> <\/p><\/div>\n<\/div>\n
[ad_2]<\/p>\n
solved Javascript SUBSTR <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Basic regular expression var str = “radio_3_5”; console.log(str.match(\/^[a-z]+_\\d+\/i)); And how the reg exp works \/ Start of reg exp ^ Match start of line [a-z]+ Match A thru Z one or more times _ Match underscore character \\d+ Match any number one or more times \/ End of Reg Exp i Ignores case Or … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[333,388],"class_list":["post-31811","post","type-post","status-publish","format-standard","hentry","category-solved","tag-javascript","tag-jquery"],"yoast_head":"\n[Solved] Javascript SUBSTR - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-javascript-substr\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Javascript SUBSTR - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Basic regular expression var str = "radio_3_5"; console.log(str.match(\/^[a-z]+_d+\/i)); And how the reg exp works \/ Start of reg exp ^ Match start of line [a-z]+ Match A thru Z one or more times _ Match underscore character d+ Match any number one or more times \/ End of Reg Exp i Ignores case Or ... 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