How does JavaScript deal with existing character blocks

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JavaScript string object

The JavaScript String (string) object is used to process existing character blocks.

Properties and description of String object

Constructor: a reference to the function that created the object

Length: length of the string

Prototype: allows you to add properties and methods to objects

String object method and description

Anchor () / / create a HTML anchor. Big () / / displays the string in a large font. Blink () / / displays the flashing string. Bold () / / displays the string in bold. CharAt () / / returns the character at the specified position. CharCodeAt () / / returns the Unicode encoding of the character at the specified position. Concat () / / connection string. Fixed () / / displays the string as typewriter text. Fontcolor () / / displays the string using the specified color. Fontsize () / / displays the string using the specified size. FromCharCode () / / creates a string from character encoding. IndexOf () / / retrieves the string. Italics () / / displays the string in italics. LastIndexOf () / / searches for strings from back to front. Link () / / displays the string as a link. LocaleCompare () / / compares two strings in a local-specific order. Match () / / finds a match for one or more regular expressions. Replace () / / replaces the substring that matches the regular expression. Search () / / retrieves the value that matches the regular expression. Slice () / / extracts a fragment of the string and returns the extracted part in the new string. Small () / / uses small font sizes to display strings. Split () / / splits the string into an array of strings. Strike () / / uses the delete line to display the string. Sub () / / displays the string as a subscript. Substr () / / extracts a specified number of characters from the string from the starting index number. Substring () / / extracts the character between two specified index numbers in the string. Sup () / / displays the string as superscript. ToLocaleLowerCase () / / converts the string to lowercase. ToLocaleUpperCase () / / converts the string to uppercase. ToLowerCase () / / converts the string to lowercase. ToUpperCase () / / converts the string to uppercase. ToSource () / / represents the source code of the object. ToString () / / returns a string. ValueOf () / / returns the original value of a string object.

Use the length property to calculate the length of the string:

Var txt= "Hello World!" [xss_clean] (txt.length)

Add a style to the string:

Var txt= "Hello World!" [xss_clean] ("

Big: "+ txt.big () +"

") [xss_clean] ("

Small: "+ txt.small () +"

") [xss_clean] ("

Bold: "+ txt.bold () +"

") [xss_clean] ("

Italic: "+ txt.italics () +"

") [xss_clean] ("

Blink: "+ txt.blink () +" (does not work in IE)

") [xss_clean] ("

Fixed: "+ txt.fixed () +"

") [xss_clean] ("

Strike: "+ txt.strike () +"

") [xss_clean] ("

Fontcolor: "+ txt.fontcolor (" Red ") +"

") [xss_clean] ("

Fontsize: "+ txt.fontsize (16) +"

") [xss_clean] ("

Lowercase: "+ txt.toLowerCase () +"

") [xss_clean] ("

Uppercase: "+ txt.toUpperCase () +"

") [xss_clean] ("

Subscript: "+ txt.sub () +"

") [xss_clean] ("

Superscript: "+ txt.sup () +"

") [xss_clean] ("

Link: "+ txt.link (".. ") +"

")

IndexOf () method:

Var str= "Hello world!" [xss_clean] (str.indexOf ("Hello") + ") [xss_clean] (str.indexOf (" World ") +") [xss_clean] (str.indexOf ("world"))

Note: use indexOf () to locate the first occurrence of a specified character in a string.

Match () method:

Var str= "Hello world!" [xss_clean] (str.match ("world") + ") [xss_clean] (str.match (" World ") +") [xss_clean] (str.match ("worlld") + ") [xss_clean] (str.match (" world! "))

Note: use match () to find a specific character in a string and return that character if found.

Replace the character in the string-replace ():

Var str= "Visit Microsoft!" [xss_clean] (str.replace (/ Microsoft/, "HuluMiao"))

Note: use the replace () method to replace some characters in a string with others.

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