Trim whitespace

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 ".trimStart(); // "this is me "
"    this is me ".trimEnd(); // " this is me"
// Non-standard methods, but currently implemented by most engines
"    this is me ".trimLeft(); // "this is me "
"    this is me ".trimRight(); // " this is me"