Javascript String Object Usage detailed

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var a = "abcdefggdefg32asdf38"; document.write ("Original:" +a+ "<br/>") document.write ("Bold:" +a.bold () + "<br/>"); document.write ("Large:" +a.big () + "<br/>"); document.write ("Italic:" +a.italics () + "<br/>"); document.write ("Delete line:" +a.strike () + "<br/>"); document.write ("Font size:" +a.fontsize + "<br/>"); document.write ("Font color:" +a.fontcolor ("#ff0000") + "<br/>"); document.write ("Superscript:" +a.sup () + "<br/>"); document.write ("Subscript:" +a.sub () + "<br/>"); document.write ("Uppercase:" +a.touppercase () + "<br/>"); document.write ("Uppercase:" +a.tolowercase () + "<br/>"); document.write ("Return index character:" +a.charat (3) + "<br/>");//This should be "D". document.write ("Return Index:" +a.indexof ("F") + "<br/>");/this should be 5. document.write ("Return index (reverse lookup):" +a.lastindexof ("F") + "<br/>");/this should be 9. document.write ("Find string:" +a.search ("F") + "<br/>");//This should be 5, same as indexof. document.write ("Replace string:" +a.replace ("a", "a") + "<br/>");//Replace A in string with a document.write ("Return substring:" +a.slice (1,3) + "<br/>");//BC, return substring from index 1 to 3-1 document.write ("Split string:" +a.split ("D"). ToString () + "<br/>");//d as a separator, split string, return array document.write ("Return substring:" +a.substr (1,2) + "<br/>");/return substring, starting with index 1, length 2, this is BC document.write ("Return substring:" +a.substring (1,3) + "<br/>");//Same as Sclice (), return substring of index 1 to 3-1 document.write ("Match:" +a.match (/d+/) + "<br/>");//Regular match, return matching result, here is 32