src/selector/escapeSelector.js

   1 import { jQuery } from "../core.js";
   2
   3 // CSS string/identifier serialization
   4 // https://drafts.csswg.org/cssom/#common-serializing-idioms
   5 var rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\x80-\uFFFF\w-]/g;
   6
   7 function fcssescape( ch, asCodePoint ) {
   8         if ( asCodePoint ) {
   9
  10                 // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
  11                 if ( ch === "\0" ) {
  12                         return "\uFFFD";
  13                 }
  14
  15                 // Control characters and (dependent upon position) numbers get escaped as code points
  16                 return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
  17         }
  18
  19         // Other potentially-special ASCII characters get backslash-escaped
  20         return "\\" + ch;
  21 }
  22
  23 jQuery.escapeSelector = function( sel ) {
  24         return ( sel + "" ).replace( rcssescape, fcssescape );
  25 };