startsWith (JavaScript)

Checks whether a string starts with a substring.

Defined in

Syntax

startsWith(str:string) : boolean

Parameters	Description
`str`	The substring.

Return value	Description
`boolean`	True if this string starts with the substring, or the substring is empty.

Examples

(1) The following comparison is true.

var cities = new String("Paris   Moscow   Tokyo");
if (cities.startsWith("Paris"))
	return "Starts with Paris";
else
	return "Does not start with Paris"

(2) The following comparison is false.

var cities = new String("Paris   Moscow   Tokyo");
if (cities.startsWith("paris"))
	return "Starts with Paris";
else
	return "Does not start with Paris"

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