文章目录
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
| Property | Description | NN | IE |
|---|---|---|---|
| constructor | 4 | 4 | |
| length | Returns the number of characters in a string | 2 | 3 |
Methods
Syntax: object.method_name()
| Method | Description | NN | IE |
|---|---|---|---|
| anchor("anchorname") | Returns a string as an anchor | 2 | 3 |
| big() | Returns a string in big text | 2 | 3 |
| blink() | Returns a string blinking | 2 | |
| bold() | Returns a string in bold | 2 | 3 |
| charAt(index) | Returns the character at a specified position | 2 | 3 |
| charCodeAt(i) | Returns the Unicode of the character at a specified position | 4 | 4 |
| concat() | Returns two concatenated strings | 4 | 4 |
| fixed() | Returns a string as teletype | 2 | 3 |
| fontcolor() | Returns a string in a specified color | 2 | 3 |
| fontsize() | Returns a string in a specified size | 2 | 3 |
| fromCharCode() | Returns the character value of a Unicode | 4 | 4 |
| indexOf() | Returns the position of the first occurrence of a specified string inside another string. Returns -1 if it never occurs | 2 | 3 |
| italics() | Returns a string in italic | 2 | 3 |
| 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! | 2 | 3 |
| link() | Returns a string as a hyperlink | 2 | 3 |
| match() | Similar to indexOf and lastIndexOf, but this method returns the specified string, or "null", instead of a numeric value | 4 | 4 |
| replace() | Replaces some specified characters with some new specified characters | 4 | 4 |
| search() | Returns an integer if the string contains some specified characters, if not it returns -1 | 4 | 4 |
| slice() | Returns a string containing a specified character index | 4 | 4 |
| small() | Returns a string as small text | 2 | 3 |
| split() | Splits a string into an array of strings | 4 | 4 |
| strike() | Returns a string strikethrough | 2 | 3 |
| sub() | Returns a string as subscript | 2 | 3 |
| substr() | Returns the specified characters. 14,7 returns 7 characters, from the 14th character (starts at 0) | 4 | 4 |
| substring() | Returns the specified characters. 7,14 returns all characters from the 7th up to but not including the 14th (starts at 0) | 2 | 3 |
| sup() | Returns a string as superscript | 2 | 3 |
| toLowerCase() | Converts a string to lower case | 2 | 3 |
| toUpperCase() | Converts a string to upper case | 2 | 3 |
var str="W3Schools is great!"
document.write(str.substr(2,6)) // school
document.write(str.substring(2,6)) // scho