字符串首字母转大写

    function titleCase(str) {
      //将字符串转化为数组并将其小写化
      var arr = str.toLowerCase().split(" ");
      
      for (var i=0;i<arr.length;i++){
        
        var char = arr[i].charAt(0);
        arr[i] = arr[i].replace(char, function replace(char){
          return char.toUpperCase();
        });
      }
      return arr.join(' ');
      
      //return str;
    }

    var hehe = titleCase("I'm a little tea pot");
    
    console.log( hehe )

------> I'm A Little Tea Pot

          数组字符串去重，虽然很简单，但是经常跟字符串去重、分割之类的弄混淆，记录一下


      数组：
    var temp=["1","2","1","4","1",]
    var Temp = $.unique(temp)
    document.write(Temp)

      字符串:
    //字符串去重

    function Str(str){
        
        var newStr=""
                    
        for(var i=0;i<str.length;i++){
            
            if(newStr.indexOf(str[i])==-1){
                
                newStr+=str[i]
            }
        }
        
        return newStr
        
    }
    
    console.log(Str("12345611123789"))