jquery
Version:
JavaScript library for DOM operations
34 lines (30 loc) • 1.62 kB
JavaScript
var ralphaStart = /^[a-z]/,
// The regex visualized:
//
// /----------\
// | | /-------\
// | / Top \ | | |
// /--- Border ---+-| Right |-+---+- Width -+---\
// | | Bottom | |
// | \ Left / |
// | |
// | /----------\ |
// | /-------------\ | | |- END
// | | | | / Top \ | |
// | | / Margin \ | | | Right | | |
// |---------+-| |-+---+-| Bottom |-+----|
// | \ Padding / \ Left / |
// BEGIN -| |
// | /---------\ |
// | | | |
// | | / Min \ | / Width \ |
// \--------------+-| |-+---| |---/
// \ Max / \ Height /
rautoPx = /^(?:Border(?:Top|Right|Bottom|Left)?(?:Width|)|(?:Margin|Padding)?(?:Top|Right|Bottom|Left)?|(?:Min|Max)?(?:Width|Height))$/;
export function isAutoPx( prop ) {
// The first test is used to ensure that:
// 1. The prop starts with a lowercase letter (as we uppercase it for the second regex).
// 2. The prop is not empty.
return ralphaStart.test( prop ) &&
rautoPx.test( prop[ 0 ].toUpperCase() + prop.slice( 1 ) );
}