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Webmaster Forum / HTML, CSS, Scripts / JavaScript / July 2005Total regular expressions virgin - string help!
Via regular expressions, how do I replace characters in a string with ""(nothing) if they aren't in an array of allowed characters? var allowed = ["x","y"," "]; var string = "xyz w yz"; - replace everything not in allowed array. > Via regular expressions, how do I replace characters in a string with > ""(nothing) if they aren't in an array of allowed characters? > > var allowed = ["x","y"," "]; > > var string = "xyz w yz"; - replace everything not in allowed array. <input type="text" value="zxujh yjhg xzhgt" onblur=" var allowed = [ 'x', 'y', ' ']; var re = new RegExp( '[^' + allowed.join('') + ']', 'g' ); alert( this.value.replace( re, '') ); ">  SignatureRob > What RobG wrote: Excellent, thanks Rob. >>What RobG wrote: > > Excellent, thanks Rob. The use of an array is not necessary, the allowed characters can be a simple string: var allowed = 'xy '; var re = new RegExp( '[^' + allowed + ']', 'g' ); SignatureRob |
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