HTML and CSS Reference
In-Depth Information
EXPLANATION
1
A String object is created with the String() constructor.
2
A string primitive is created the literal way.
3
The fontcolor() method is used to change the color of the string to blue. This
method emulates the HTML tag, < font color=“blue”>.
4
The fontsize() , fontcolor() , and bold() methods are used as properties of the string.
5, 6
The HTML method is concatenated to the string “Good-bye, ” causing it to be dis-
played in italic, bold, large text (see Figure 9.30).
Figure 9.30 Properties of the String object are used to change its appearance and
determine its size.
There are a number of methods (see Table 9.10) provided to manipulate a string.
Table 9.10 Methods for String Manipulation
Method
What It Does
charAt(index)
Returns the character at a specified index position.
charCodeAt(index)
Returns the Unicode encoding of the character at a
specified index position.
concat(string1, ..., stringn)
Concatenates string arguments to the string on which the
method was invoked.
fromCharCode(codes)
Creates a string from a comma-separated sequence of
character codes.
indexOf(substr, startpos)
Searches for the first occurrence of substr starting at
startpos and returns the startpos(index value) of substr.
lastIndexOf(substr, startpos)
Searches for the last occurrence of substr starting at
startpos and returns the startpos (index value) of substr.
replace(searchValue, replaceValue)
Replaces searchValue with replaceValue.
Continues
 
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