I am using this method to find the frequency of words, however i am a bit confused with the whole code.
Here is the code:
function check(){
var word = document.querySelector('textarea').value.split(" ");
frequency ={};
word.forEach(function(i){
console.log(i)
if(!frequency[i]){
frequency[i] = 0;
}
frequency[i]+=1
})
console.log(frequency)
}<textarea></textarea>
<button onclick = 'check()'>check</button>I just wonder what does the i stand for and what does the frequency[i].
Could someone explain to me a little bit because I think this code is not quite friendly for me, the beginner.
foreach iterates over array, and as paramter has function into which is passed as parameter actual element of array. So i in this function is actual element of 'word' array.
for object frequency is frequency[i] the i'th element. At start, this object is empty, so frequency[i] will be undefined, but in foreach loop you filling this object with some values so in next iterations there may by some values