Javascript Strings

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	* <div id="length">'''length'''</div>		* <div id="length">'''length'''</div>
	Property that describes the length of a string as a decimal number.		Property that describes the length of a string as a decimal number.
		+
		+	Returns numeric length of string
		+
		+	x="abcd";
		+	Engine.output(x.length);
		+
		+	'''4'''
	* <div id="charAt">'''charAt(pos)'''<div>		* <div id="charAt">'''charAt(pos)'''<div>
−	Function that returns a character at a certain position in string.	+	Function that returns a character at a certain 0-based position in string.
		+
		+	Returns a string containing a single character or empty if ''pos'' is out of bounds.
		+
		+	x="abcd";
		+	Engine.output(x.charAt(3));
		+
		+	'''d'''
	* <div id="indexOf">'''indexOf(str)'''</div>		* <div id="indexOf">'''indexOf(str)'''</div>
	Function that returns the position of a substring in another string.		Function that returns the position of a substring in another string.
		+
		+	Returns 0-based position of ''str'' or -1 if str is not found
		+
		+	x="abcd";
		+	Engine.output(x.indexOf("bc"));
		+
		+	'''1'''
	* <div id="substr">'''substr(offs,len)'''</div>		* <div id="substr">'''substr(offs,len)'''</div>
	Function that returns a substring.		Function that returns a substring.
		+
		+	Returns a string that starts at 0-based position ''offs'' and has at most ''len'' characters
		+
		+	x="abcd";
		+	Engine.output(x.substr(1,2));
		+
		+	'''bc'''
	* '''substr(offs)'''		* '''substr(offs)'''
	Function that returns a substring.		Function that returns a substring.
		+
		+	Returns a string that starts at 0-based position ''offs'' to the end of the original string
		+
		+	x="abcd";
		+	Engine.output(x.substr(2));
		+
		+	'''cd'''
	* <div id="match">'''match(reg)'''</div>		* <div id="match">'''match(reg)'''</div>

---

Revision as of 18:09, 10 September 2013

Although the String object is not directly supported by Yate's Javascript these methods are applicable to most non-object variables.

Note that these are not real properties of strings and cannot be enumerated!

• length

Property that describes the length of a string as a decimal number.

Returns numeric length of string

x="abcd";
Engine.output(x.length);

4

• charAt(pos)

Function that returns a character at a certain 0-based position in string.

Returns a string containing a single character or empty if pos is out of bounds.

x="abcd";
Engine.output(x.charAt(3));

d

• indexOf(str)

Function that returns the position of a substring in another string.

Returns 0-based position of str or -1 if str is not found

x="abcd";
Engine.output(x.indexOf("bc"));

1

• substr(offs,len)

Function that returns a substring.

Returns a string that starts at 0-based position offs and has at most len characters

x="abcd";
Engine.output(x.substr(1,2));

bc

• substr(offs)

Function that returns a substring.

Returns a string that starts at 0-based position offs to the end of the original string

x="abcd";
Engine.output(x.substr(2));

cd

• match(reg)

Function that matches a string against a Regular Expression.

• toLowerCase()

Function that converts a string to lower case.

• toUpperCase()

Function that converts a string to upper case.

• trim()

Function that removes leading and trailing spaces from a string.

• sqlEscape()

Function that performs SQL escaping on a string.

• startsWith(str)

Function that checks if a string starts with a specific substring.

• endsWith(str)

Function that checks if a string ends with a specific substring.

• split(sep)

Function that splits a string into an Array at a separator.

• toString()

Function that converts a number to string using numbering base 10.

• toString(base)

Function that converts a number to string using a specified numbering base.