var a = "abcdefggdefg32asdf38"; document.write( "origin:"+a+"<br />")document.write("+a.bold()+"<br /> "; document.write(" large: "+a.big()+"; documution) /> "; document.write()+ "<br /> poment; document.write(" font size: "+a.fontsize(10)+" <br //> "; document.write(" /> "; document.write()+ "<br />"; document.write( "fontsize:"+"+a.fontsize(10)+"<br /> " /document.write("font color:"+a.fontcolor( "#ff0000")+"<br /> "; document.write(" superscript:"+ a.sup()+"<br />"); doccript.write( "subscript:"+"<br /> purt. /> "; document.write(" uppercase: "+a.tolowercase()+"<br />"; document.write("treturn index Character:"+a.charat(3)+"<br />" ); document.write(write(write(write)in indexument: "文字: "+A.Charat(3)+" <br/> "/>"); //ここでは「d "document.write(" return index: "+a.indexof(" f ")+" <br/> "); // 5document.write(" return index(reverse search): "+a.lastinexof(" f ")+"+" 9document.write( "search string:"+a.search( "f")+"<br/>"); //ここでは5、indexof document.write( "+a.replace(" a "、" a ")+" <br/> "); //文字列のa adocument.write:"+a.slite: "+ />> "); //文字列のAをadocument.write(" return substring: "+a.slice(1,3)+" <br /> "); />> "); // bcである必要があります。インデックス1から3-1のdocument.write("+a.split( "d")。tostring()+"<br/>"); //スプリッターとしてdを返す、document.write( "split string:"+a.split( "d"); splitter、splitt in string、return document.write.write( "return substring:"+a.sub)+"<インデックス1と長さは2、bcdocument.write( "return substring:"+a.substring(1,3)+"<br/>"); // sclice()と同じです。 document.write( "match:"+a.match(// d+/)+"<br/>/>"); //レギュラーマッチ、マッチング結果を返し、ここに32があります