Last active
October 28, 2022 22:51
-
-
Save mcjmigdal/56407315d30a2252325517d0a278ae2c to your computer and use it in GitHub Desktop.
Javascript FASTA format validator
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> | |
| </head> | |
| <body> | |
| <div> | |
| <label for="fasta">FASTA</label> | |
| <textarea type="text" id="fasta" rows="15" cols="80" required autofocus onchange="validateFasta()"></textarea> | |
| </div> | |
| </body> | |
| <script> | |
| function validateFasta() { | |
| let vheader = new RegExp("^>"); | |
| let vfasta = new RegExp("^[ACGT]+$"); | |
| let handle = document.getElementById("fasta"); | |
| let fasta = handle.value.split("\n"); | |
| let i = 0; | |
| let line = "" | |
| let new_header = false; | |
| let iscorrect = 0; | |
| let ok = false; | |
| while (i < fasta.length) { | |
| if (fasta.length == 1 ) { | |
| ok = false; | |
| break; | |
| } | |
| line = fasta[i]; | |
| if (! line.length) { | |
| i++; | |
| continue; | |
| } | |
| isheader = vheader.test(line); | |
| iscorrect = isheader + vfasta.test(line); | |
| if (iscorrect == 1) { | |
| ok = true; | |
| } else { | |
| ok = false; | |
| }; | |
| if (new_header && isheader) { | |
| ok = false; | |
| } | |
| if (isheader) { | |
| new_header = true; | |
| } else { | |
| new_header = false; | |
| } | |
| i++; | |
| } | |
| if (ok) { | |
| console.log("ok"); | |
| handle.style = "border-color: green; border-width: 5px;"; | |
| } else { | |
| console.log("bad"); | |
| handle.style = "border-color: red; border-width: 5px;" | |
| } | |
| } | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment