Several questions of JS's face

String to Hump Function Example: Border-left-width-borderLeftWidth

1     //General Method2     functionFntocamel (str) {3         vararr = Str.split ('-'),4Len =Arr.length,5 i;6          for(vari = 1; i < Len; i++){7Arr[i] = Arr[i].charat (0). toUpperCase () + arr[i].substring (1);8         }9         returnArr.join (");//Note the empty string is comma by defaultTen     } One     //Regular A     functionFntocamelre (str) { -         varRe =/-(\w)/G; -         returnStr.replace (Re,function(arg0, arg1) { the             returnarg1.touppercase (); -         }); -}

Gets the most occurrences of characters and times in a string

1     //General Method2     functionFngetmost (str) {3         varobj = {},4Len =Str.length,5num = 0,6 I,7                 Char;8 9          for(vari = 0; i < Len; i++){Ten             if(Obj[str[i]]) { One Obj[str[i]].push (Str[i]); A}Else{ -Obj[str[i]] =[Str[i]]; -             } the         } -  -          for(Iinchobj) { -             if(Num <obj[i].length) { +num =obj[i].length; -                 Char= Obj[i][0]; +             } A         } at  -         return { -             Char:Char, - Num:num -         }; -     } in  -     //Regular to     functionFngetmostre (str) { +         vararr = str.split (' '), -Re =/(\w) \1+/, thenum = 0, *                 Char; $ Panax Notoginseng Arr.sort (); -str = arr.join (' '); the  +Str.replace (Re,function(arg0, arg1) { A             if(Arg0.length >num) { thenum =arg0.length; +                 Char=arg1; -             } $         }); $          -         return { -             Char:Char, the Num:num -         };Wuyi}

Add a substring to a string for example: 1234567890-123,456,789

1     //General Method2     functionFngetthousand (str) {3         varLen =Str.length,4num = len% 3,5arr = [],6 i;7 8         if(num > 0) {//Mr. Foo the extra characters starting with the string as a whole into the array9Arr.push (str.substring (0, num));Ten         } One  Astr = str.substring (num);//Remove the extra characters -Len =str.length; -  the          for(i = 0; i < len; i + = 3) {//three-A-byte deposit array -Arr.push (Str.substr (i, 3)); -         } -         returnArr.join (); +     } -  +     //Regular A     functionFngetthousandre (str) { at         varRe =/(? = (?! \b) (\d{3}) +$)/G; -  -         returnStr.replace (Re, ', '); -}

Several questions of JS's face