Using Geany and launching jslint (with eg.node-jslint). This script parse jslint output and add line filename and line numbers and produce an output suitable for Geany (underlining errors and jumping to related line as you cilck on jslint ouput).

jslint_out_for_geany.py

#!/usr/bin/env python3
"""
Jslint output reformater for Geany

When defining your compile command in geany use::

    /path/to/jslint %f  |/path/to/jslint_out_for_geany.py
"""

import re
import sys


line_indic = re.compile(r"// Line (?P<line>\d+), Pos (?P<pos>\d+)")
fname = None
comment = ''

while True:
    l = sys.stdin.readline()
    if not l:
        break

    # first line is fname
    if fname is None and l != "\n":
        fname = l.rstrip('\n')
        print(fname)
        continue

    indic = line_indic.search(l)
    comment += l
    if indic:
        print("%s:%s:%s " % (fname, indic.group('line'), indic.group('pos')), comment, end='')
        comment = ''