javascript regex replace back reference

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
javascript regex replace back reference	0.22	0.5	811	76	39
javascript	1.62	0.4	4896	12	10
regex	0.99	0.6	730	83	5
replace	1.97	0.2	8619	27	7
back	0.67	1	8567	70	4
reference	0.7	0.4	9180	56	9

Keyword	CPC	PCC	Volume	Score
javascript replace by regex	0.96	0.8	6078	24
javascript regex replace all	0.44	0.8	7430	31
javascript regex replace function	0.32	0.7	2800	18
regex replace in js	1.53	0.8	4361	30
javascript string replace regex	0.65	0.8	5231	71
replace using regex js	0.31	0.7	2408	11
javascript replace string using regex	0.5	0.8	4185	64
js regex replace all	0.56	0.4	9379	100
how to replace in regex	1.58	0.9	626	39
how to use regex replace	0.17	0.3	1538	69
js replace new regexp	0.49	0.8	649	54
javascript regexp replace	0.32	0.9	5855	25
javascript regex replace capture group	1.44	0.9	4526	9
javascript regex replace all non numeric	0.98	1	6321	57
javascript regex replace all occurrences	1.75	0.7	2978	31
javascript regex replace all spaces	1.62	0.4	6527	14
javascript regex replace all matches	1.91	0.1	339	58
javascript string replace all regex	1.76	0.4	8335	47
replace regex in javascript	1.96	0.9	3609	32
javascript replace all regex	1.83	0.9	3044	39