Answer by N Djel Okoye for How to count string occurrence in string?
This function will tell you if the substring is in the string and how many times.const wordInText = (wordToFind, wholeText) => { const wordToFindRegex = new RegExp(wordToFind, 'gi'); const...
View ArticleAnswer by Mr. Doge for How to count string occurrence in string?
added this optimization:How to count string occurrence in string?This is probably the fastest implementation here, but it would be even faster if you replaced "++pos" with "pos+=searchFor.length"...
View ArticleAnswer by Denise Ignatova for How to count string occurrence in string?
Here is my solution. I hope it would help someoneconst countOccurence = (string, char) => {const chars = string.match(new RegExp(char, 'g')).lengthreturn chars;}
View ArticleAnswer by Elell for How to count string occurrence in string?
Here is my solution, in 2022, using map() and filter() :string = "Xanthous: A person with yellow hair. Her hair was very xanthous in colour." count = string.split('').map((e,i) => { if(e === 'e')...
View ArticleAnswer by Balaji Sukumaran for How to count string occurrence in string?
We can use the js split function, and it's length minus 1 will be the number of occurrences.var temp = "This is a string.";alert(temp.split('is').length-1);
View ArticleAnswer by polendina for How to count string occurrence in string?
This function works in three modes: looking for the frequency of a single character within a string , a contiguous substring within a string then if it does match one it moves right ahead to next one...
View ArticleAnswer by Bhojak Rahul for How to count string occurrence in string?
const getLetterMatchCount = (guessedWord, secretWord) => { const secretLetters = secretWord.split(''); const guessedLetterSet = new Set(guessedWord); return secretLetters.filter(letter =>...
View ArticleAnswer by Sagar Shinde for How to count string occurrence in string?
var mystring = 'This is the lorel ipsum text';var mycharArray = mystring.split('');var opArr = [];for(let i=0;i<mycharArray.length;i++){if(mycharArray[i]=='i'){//match the character you want to...
View ArticleAnswer by H S W for How to count string occurrence in string?
A simple way would be to split the string on the required word, the word for which we want to calculate the number of occurences, and subtract 1 from the number of parts:function...
View ArticleAnswer by Force Bolt for How to count string occurrence in string?
//Try this codeconst countSubStr = (str, search) => { let arrStr = str.split(''); let i = 0, count = 0; while(i < arrStr.length){ let subStr = i + search.length + 1 <= arrStr.length ?...
View ArticleAnswer by Michel for How to count string occurrence in string?
Iterate less the second time (just when first letter of substring matches) but still uses 2 for loops: function findSubstringOccurrences(str, word) { let occurrences = 0; for(let i=0; i<str.length;...
View ArticleAnswer by dimButTries for How to count string occurrence in string?
ES2020 offers a new MatchAll which might be of use in this particular context.Here we create a new RegExp, please ensure you pass 'g' into the function.Convert the result using Array.from and count the...
View ArticleAnswer by Samruddh Shah for How to count string occurrence in string?
var str = 'stackoverflow';var arr = Array.from(str);console.log(arr);for (let a = 0; a <= arr.length; a++) { var temp = arr[a]; var c = 0; for (let b = 0; b <= arr.length; b++) { if (temp ===...
View ArticleAnswer by b_rop for How to count string occurrence in string?
The parameters:ustring: the superset stringcountChar: the substringA function to count substring occurrence in JavaScript:function subStringCount(ustring, countChar){ var correspCount = 0; var corresp...
View ArticleAnswer by fahrenheit317 for How to count string occurrence in string?
You could try thislet count = s.length - s.replace(/is/g, "").length;
View ArticleAnswer by mendezcode for How to count string occurrence in string?
function substrCount( str, x ) { let count = -1, pos = 0; do { pos = str.indexOf( x, pos ) + 1; count++; } while( pos > 0 ); return count; }
View ArticleAnswer by Clean Code Studio for How to count string occurrence in string?
substr_count translated to Javascript from phpLocutus (Package that translates Php to JS)substr_count (official page, code copied below)function substr_count (haystack, needle, offset, length) { //...
View ArticleAnswer by Ashok R for How to count string occurrence in string?
came across this post.let str = 'As sly as a fox, as strong as an ox';let target = 'as'; // let's look for itlet pos = 0;while (true) { let foundPos = str.indexOf(target, pos); if (foundPos == -1)...
View ArticleAnswer by BaseZen for How to count string occurrence in string?
No one will ever see this, but it's good to bring back recursion and arrow functions once in a while (pun gloriously intended)String.prototype.occurrencesOf = function(s, i) { return (n => (n ===...
View ArticleAnswer by Kamal for How to count string occurrence in string?
var countInstances = function(body, target) { var globalcounter = 0; var concatstring = ''; for(var i=0,j=target.length;i<body.length;i++){ concatstring = body.substring(i-1,j); if(concatstring ===...
View ArticleAnswer by PhilMaGeo for How to count string occurrence in string?
Answer for Leandro Batista :just a problem with the regex expression."use strict"; var dataFromDB = "testal"; $('input[name="tbInput"]').on("change",function(){var charToTest = $(this).val();var...
View ArticleAnswer by Fad Seck for How to count string occurrence in string?
String.prototype.Count = function (find) { return this.split(find).length - 1;}console.log("This is a string.".Count("is"));This will return 2.
View ArticleAnswer by Jorge Alberto for How to count string occurrence in string?
Simple version without regex:var temp = "This is a string.";var count = (temp.split('is').length - 1);alert(count);
View ArticleAnswer by Tushar Shukla for How to count string occurrence in string?
Now this is a very old thread i've come across but as many have pushed their answer's, here is mine in a hope to help someone with this simple code.var search_value = "This is a dummy sentence!";var...
View ArticleAnswer by Ayo I for How to count string occurrence in string?
Building upon @Vittim.us answer above. I like the control his method gives me, making it easy to extend, but I needed to add case insensitivity and limit matches to whole words with support for...
View ArticleAnswer by Sunil Garg for How to count string occurrence in string?
var temp = "This is a string.";console.log((temp.match(new RegExp("is", "g")) || []).length);
View ArticleAnswer by bcherny for How to count string occurrence in string?
For anyone that finds this thread in the future, note that the accepted answer will not always return the correct value if you generalize it, since it will choke on regex operators like $ and .. Here's...
View ArticleAnswer by Ranju for How to count string occurrence in string?
var myString = "This is a string."; var foundAtPosition = 0; var Count = 0; while (foundAtPosition != -1) { foundAtPosition = myString.indexOf("is",foundAtPosition); if (foundAtPosition != -1) {...
View ArticleAnswer by Faraz Kelhini for How to count string occurrence in string?
The non-regex version: var string = 'This is a string', searchFor = 'is', count = 0, pos = string.indexOf(searchFor);while (pos > -1) {++count; pos = string.indexOf(searchFor,...
View ArticleAnswer by Meghendra S Yadav for How to count string occurrence in string?
Try it<?php $str = "33,33,56,89,56,56";echo substr_count($str, '56');?><script type="text/javascript">var temp = "33,33,56,89,56,56";var count = temp.match(/56/g);...
View ArticleAnswer by Ismael Miguel for How to count string occurrence in string?
Here is the fastest function!Why is it faster?Doesn't check char by char (with 1 exception)Uses a while and increments 1 var (the char count var) vs. a for loop checking the length and incrementing 2...
View ArticleAnswer by Gere for How to count string occurrence in string?
My solution:var temp = "This is a string.";function countOccurrences(str, value) { var regExp = new RegExp(value, "gi"); return (str.match(regExp) || []).length;}console.log(countOccurrences(temp, 'is'));
View ArticleAnswer by Jason Larke for How to count string occurrence in string?
Super duper old, but I needed to do something like this today and only thought to check SO afterwards. Works pretty fast for me.String.prototype.count = function(substr,start,overlap) { overlap =...
View ArticleAnswer by Simm for How to count string occurrence in string?
I think the purpose for regex is much different from indexOf.indexOf simply find the occurance of a certain string while in regex you can use wildcards like [A-Z] which means it will find any capital...
View ArticleAnswer by Freezy Ize for How to count string occurrence in string?
You can try this:var theString = "This is a string.";console.log(theString.split("is").length - 1);
View ArticleAnswer by Diogo Arenhart for How to count string occurrence in string?
Try this:function countString(str, search){ var count=0; var index=str.indexOf(search); while(index!=-1){ count++; index=str.indexOf(search,index+1); } return count;}
View ArticleAnswer by Vitim.us for How to count string occurrence in string?
/** 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]...
View ArticleAnswer by Tomas for How to count string occurrence in string?
Just code-golfing Rebecca Chernoff's solution :-)alert(("This is a string.".match(/is/g) || []).length);
View ArticleAnswer by Gumbo for How to count string occurrence in string?
You can use match to define such function:String.prototype.count = function(search) { var m = this.match(new RegExp(search.toString().replace(/(?=[.\\+*?[^\]$(){}\|])/g, "\\"), "g")); return m ?...
View ArticleAnswer by Brandon Frohbieter for How to count string occurrence in string?
function countInstances(string, word) { return string.split(word).length - 1;}console.log(countInstances("This is a string", "is"))
View ArticleAnswer by Rebecca Chernoff for How to count string occurrence in string?
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:var temp = "This is a string.";var count =...
View ArticleHow to count string occurrence in string?
How can I count the number of times a particular string occurs in another string. For example, this is what I am trying to do in Javascript:var temp = "This is a string.";alert(temp.count("is"));...
View ArticleAnswer by sachin sahu for How to count string occurrence in string?
let str="sachinsahu";let output={};for (var i = 0; i < str.length; i++) { console.log(str[i]); let ch=str[i]; if(!output[ch]){ output[ch]=1; } else{ output[ch]+=1; }}console.log(output);
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