Linear search algorithm in JavaScript

What is linear search algorithm ?

• find something in order from the beginning of array.

Code

 /***************************************
  * Util
  ***************************************/
var getRandomNumList = function(num) {
  var i, j, tmp, random = new Array(num);
  random[0] = 0;

  for(i = num - 1; i > 0; i--){
    j = Math.floor(Math.random() * (i+1));
    tmp = random[i] || i;
    random[i] = random[j] || j;
    random[j] = tmp;
  }
  return random;
};

/***************************************
 * search
 ***************************************/
var linearSearch = function(list, target){
  var result = null,
      i = 0, value;
  for(; i < list.length; i++){
    value = list[i];
    if(value === target){
      result = i;
      break;
    }
  }
  return result;
};

/***************************************
 * main
 ***************************************/
var list = getRandomNumList(100),
  target = 83;
  result = linearSearch(list, target);

console.log(list);
console.log('index of tartget(' + target + ') is ' + result);

Test

for(i = num - 1; i > 0; i—){
j = Math.floor(Math.random() * (i+1));
tmp = random[i] || i;
random[i] = random[j] || j;
random[j] = tmp;
}
return random;
};

/***************************************

• search
  ***************************************/
  var linearSearch = function(list, target){
  var result = null,
  i = 0, value;
  for(; i < list.length; i++){
  value = list[i];
  if(value === target){
  result = i;
  break;
  }
  }
  return result;
  };

/***************************************

• main
  ***************************************/
  var list = getRandomNumList(100),
  target = 83;
  result = linearSearch(list, target);

console.log(list);
console.log(‘index of tartget(’ + target + ’) is ’ + result);

https://codepen.io/Tkashiro/embed/OPJjPe/?height=300&theme-id=9575&default-tab=result&embed-version=2