javascript regex … how to escape hyphen

Question

how to escape a hyphen in a replace statement

var lvs = "ui-btn ui-btn-up-XXX  ui-li ui-li-has-icon ui-btn-hover-e ui-btn-up-ZZZ" ;

var lvs = lvs.replace(/\bui-btn-up-[^\b]*?\b/gi , "" ) ;
alert( lvs);

I have tried many variations of forwards and backwards slashes

Answer 1

I think you are making it too complicated with the word break characters ( \\b ). Would this not work for what you are trying to do?

var lvs = lvs.replace(/ui-btn-up(-\w+)?/gi, "");

That is also assuming that you want to remove a value of ui-btn-up . If not, then use:

var lvs = lvs.replace(/ui-btn-up-\w+/gi, "");

Answer 2

您想这样做吗？

var lvs = lvs.replace(/\sui-btn-up-\S+\s*?/gi , "" ) ;

Answer 3

this works ok for me :-

lvs = "ui-btn ui-btn-up-XXX  ui-li ui-li-has-icon ui-btn-hover-e ui-btn-up-ZZZ" ;
var lvs = lvs.replace(/\bui-btn-up-\w*\s*/gi , "" ) ;
alert( lvs);

http://jsfiddle.net/keith_nicholas/6KA9T/

Answer 4

You don't have to escape - .

'sonia-b-cat'.replace(/a-b-c/, '123') // 'sonia123at'

Only when it's in a character class do you need to escape it with a backslash

'z-z'.replace(/[abc\-]/, '123') // 'z123z'