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"); // 2js 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");Copyright © 2021 Codeinu
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