incre-decre-url.js

key.setViewKey('>', function (ev, arg) {
    let pattern = /(.*?)([0]*)([0-9]+)([^0-9]*)$/;
    let url     = content.location.href; 
    let digit   = url.match(pattern);

    if (digit[1] && digit[3])
    {
        let len  = digit[3].length;
        let next = +digit[3] + (arg ? arg : 1);
        content.location.href = digit[1] + (digit[2] ||"").slice(next.toString().length - len) + next + (digit[4] ||"");
    }
}, 'Increment last digit in the URL');
 
key.setViewKey('<', function (ev, arg) {
    let pattern = /(.*?)([0]*)([0-9]+)([^0-9]*)$/;
    let url     = content.location.href; 
    let digit   = url.match(pattern);

    if (digit[1] && digit[3])
    {
        let len  = digit[3].length;
        let next = +digit[3] - (arg ? arg : 1);
        content.location.href = digit[1] + (digit[2] ||"").slice(next.toString().length - len) + next + (digit[4] ||"");
    }
}, 'Decrement last digit in the URL');