Answers for "count occurrences of word in string javascript"

javascript count occurrences of letter in string

function count(str, find) {
    return (str.split(find)).length - 1;
}

count("Good", "o"); // 2

count occurrences of character in string javascript

var temp = "This is a string.";
var count = (temp.match(/is/g) || []).length;
console.log(count);

Output: 2

Explaination : The g in the regular expression (short for global) says to search the whole string rather than just find the first occurrence. This matches 'is' twice.

javascript count occurrences in string

function countOccurences(string, word) {
   return string.split(word).length - 1;
}
var text="We went down to the stall, then down to the river."; 
var count=countOccurences(text,"down"); // 2

js string includes count

/** Function that count occurrences of a substring in a string;
 * @param {String} string               The string
 * @param {String} subString            The sub string to search for
 * @param {Boolean} [allowOverlapping]  Optional. (Default:false)
 *
 * @author Vitim.us https://gist.github.com/victornpb/7736865
 * @see Unit Test https://jsfiddle.net/Victornpb/5axuh96u/
 * @see http://stackoverflow.com/questions/4009756/how-to-count-string-occurrence-in-string/7924240#7924240
 */
function occurrences(string, subString, allowOverlapping) {

    string += "";
    subString += "";
    if (subString.length <= 0) return (string.length + 1);

    var n = 0,
        pos = 0,
        step = allowOverlapping ? 1 : subString.length;

    while (true) {
        pos = string.indexOf(subString, pos);
        if (pos >= 0) {
            ++n;
            pos += step;
        } else break;
    }
    return n;
}

Count Total Amount Of Specific Word In a String JavaScript

Here are two methods (Scroll down please here!) to find the total number of occurrence match
words in the string.

The first function allows you to give a query as input.
The second one uses the .match function of JavaScript.

Both introduced methods are resistant for any chars and 
independent of splitter and separator like " " or ",".

str1 is your query

str1 = "fake";  

str2 is the whole string:

var inputString = "fakefakefakegg fake 00f0 221 Hello wo fake misinfo
fakeddfakefake , wo  431,,asd misinfo misinfo co wo fake sosis bandari
mikhori?, fake fake fake ";

Method 1 : use .indexOf or .search function of JavaScript 
(advantage you can give input)


function CountTotalAmountOfSpecificWordInaString(str1, str2)
{
    let next = 0;
    let findedword = 0;
        do {
            var n = str2.indexOf(str1, next);
            findedword = findedword +1;
            next = n + str1.length;
            }while (n>=0);
     console.log("total finded word :" , findedword - 1 );
     return findedword;
   }
Method 2 : use .match function of JavaScript:



/**
 * @return {number}
 *  you have to put fake as query manually in this solution!!! disadvantage
 */

function CountTotalAmountOfMachedWordInaString(str2) {
    let machedWord = 0;
    machedWord = str2.match(/fake/g).length; 
    console.log("total finded mached :" , machedWord);
    return machedWord;
}
call the functions (Inputs):

CountTotalAmountOfSpecificWordInaString("fake" , "fake fakefakegg fake 00f0 221 Hello wo fake rld fakefakefake , wo lklsak dalkkfakelasd co wo fake , fake fake fake" );
CountTotalAmountOfMachedWordInaString("sosis bandarie fake  khiyarshour sosis , droud bar fake to sosis3");