javascript if undefined or null

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
javascript if undefined or null	1.66	0.7	9812	89	31
javascript	0.25	0.2	2331	81	10
if	0.62	0.2	717	72	2
undefined	1.52	0.5	7092	87	9
or	1.6	0.3	8689	98	2
null	0.74	0.5	3969	88	4

Keyword	CPC	PCC	Volume	Score
javascript if undefined or null	1.7	0.6	1442	50
undefined and null in javascript	1.55	1	470	99
undefined vs null javascript	0.61	0.5	3906	54
undefined and null difference in javascript	0.76	1	1374	5
javascript check if null or undefined	1.32	0.5	3510	33
what is null and undefined in javascript	0.38	0.1	9087	83
diff between null and undefined in javascript	0.25	0.8	7651	83
null vs undefined javascript	1.7	0.2	2271	34
javascript check for null or undefined	1.77	0.7	9507	53
why null undefined is true in javascript	1.89	0.1	1078	25