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String object's properties and methods

2005-04-07 10:34 507 查看

String object

The String object is used to work with text.
The String object's properties and methods are described below:
NN: Netscape, IE: Internet Explorer

Properties

Syntax: object.property_name
PropertyDescriptionNNIE
constructor 44
lengthReturns the number of characters in a string23

Methods

Syntax: object.method_name()
MethodDescriptionNNIE
anchor("anchorname")Returns a string as an anchor23
big()Returns a string in big text23
blink()Returns a string blinking2 
bold()Returns a string in bold23
charAt(index)Returns the character at a specified position23
charCodeAt(i)Returns the Unicode of the character at a specified position44
concat()Returns two concatenated strings44
fixed()Returns a string as teletype23
fontcolor()Returns a string in a specified color23
fontsize()Returns a string in a specified size23
fromCharCode()Returns the character value of a Unicode44
indexOf()Returns the position of the first occurrence of a specified string inside another string. Returns -1 if it never occurs23
italics()Returns a string in italic23
lastIndexOf()Returns the position of the first occurrence of a specified string inside another string. Returns -1 if it never occurs. Note: This method starts from the right and moves left!23
link()Returns a string as a hyperlink23
match()Similar to indexOf and lastIndexOf, but this method returns the specified string, or "null", instead of a numeric value44
replace()Replaces some specified characters with some new specified characters44
search()Returns an integer if the string contains some specified characters, if not it returns -144
slice()Returns a string containing a specified character index44
small()Returns a string as small text23
split()Splits a string into an array of strings 44
strike()Returns a string strikethrough23
sub()Returns a string as subscript23
substr()Returns the specified characters. 14,7 returns 7 characters, from the 14th character (starts at 0)44
substring()Returns the specified characters. 7,14 returns all characters from the 7th up to but not including the 14th (starts at 0)23
sup()Returns a string as superscript23
toLowerCase()Converts a string to lower case23
toUpperCase()Converts a string to upper case23
var str="W3Schools is great!"
document.write(str.substr(2,6))          // school
document.write(str.substring(2,6))    // scho
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