Question

I use JavaScript to convert my string to a nice permalink for URL, but i have a small problem when i use duble or more space its convert it to — and more, if i use it in the end of this string its replace it to – to, like this

this---is---a-test-right-now----

the string i want to have back if i got this is follow

this-is-a-test-right-now

can sombardy help me here?

my own Javascript look like this

function prototype( str )
{
    var ret = str;
    ret = ret.replace( /ø/g, 'oe' );
    ret = ret.replace( /Ø/g, 'OE' );
    ret = ret.replace( /å/g, 'aa' );
    ret = ret.replace( /Å/g, 'AA' );
    ret = ret.replace( /æ/g, 'ae' );
    ret = ret.replace( /Æ/g, 'AE' );
    ret = ret.replace( /\_/g, '-' );

    ret = ret.replace(/[^a-zA-Z0-9\/-]/ig,'-').replace(/_+/ig,'-').toLowerCase();

    return ret;
}

Answer 1

Adding one more replace in chain will get the job done, by looking for occurrence of - more than twice to replace by one -

replace(/[-]{2,}/g, '-')

The above example will look for the occurence of - more than twice and replace it with single - and do it globally to achieve it

function prototype( str )
{
    var ret = str;
    ret = ret.replace( /ø/g, 'oe' );
    ret = ret.replace( /Ø/g, 'OE' );
    ret = ret.replace( /å/g, 'aa' );
    ret = ret.replace( /Å/g, 'AA' );
    ret = ret.replace( /æ/g, 'ae' );
    ret = ret.replace( /Æ/g, 'AE' );
    ret = ret.replace( /\_/g, '-' );

    ret = ret.replace(/[^a-zA-Z0-9\/-]/ig,'-').replace(/_+/ig,'-').replace(/[-]{2,}/g, '-').toLowerCase();

    return ret;
}