To trim whitespace from the edges of a string, use String.prototype.trim:

“

some whitespaced string “.trim(); // “some whitespaced string”

Many JavaScript engines, but not Internet Explorer, have implemented non-standard trimLeft and trimRight methods. There is a proposal, currently at Stage 1 of the process, for standardised trimStart and trimEnd methods, aliased to trimLeft and trimRight for compatibility.

// Stage 1 proposal

“

“

this is me

this is me

“.trimStart(); // “this is me “

“.trimEnd(); // “

this is me”

// Non-standard methods, but currently implemented by most engines

“

“

this is me

this is me

“.trimLeft(); // “this is me

“

“.trimRight(); // “

this is me”