如何删除字符串中的第二个空格，而不是首先使用js

function removeSecondSpace(str) {
  var count = 0;
  var result = '';
  
  for (var i = 0; i < str.length; i++) {
    if (str[i] === ' ') {
      count++;
      if (count === 2) {
        result = str.slice(0, i) + str.slice(i + 1);
        break;
      }
    }
  }
  
  return result;
}

var input = 'This is a sample string with multiple spaces';
var output = removeSecondSpace(input);
console.log(output); // 输出：'This is a samplestring with multiple spaces'