无法敲定 function 骆驼案

Question

I can't understand where is first word on output..

function camelCase(str){

let string = '';
let arr = str.split(' ');
let oneStr = '';
let twoStr = '';
for (let i = 0; i < arr.length; i++) {
    
string1 = arr[i] ;

oneStr = string1[0].toUpperCase() + string1.slice(1);

}

return oneStr;
}

console.log(camelCase('camel case'));

Output: Case

Help please to finalize the code

Answer 1

On this line, use += operator to concatenate the strings:

oneStr += string1[0].toUpperCase() + string1.slice(1);

Answer 2

actually you assigned the result to string1 in each iteration, instead use += operator

 function camelCase(str){ let string = ''; let arr = str.split(' '); let oneStr = ''; let twoStr = ''; for (let i = 0; i < arr.length; i++) { string1 = arr[i]; oneStr += string1[0].toUpperCase() + string1.slice(1); } return oneStr; } console.log(camelCase('camel case'));