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James Portman
  • 12
Asked: 2022-04-16T10:32:54+00:00 In:

Javascript count character in string samples

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I’m interested in “Javascript count character in string”. But there are many different sources on the Internet, if you have any specific examples, please share them with me. Thank you very much!

♦ Suggestions of ITtutoria Team

Ideas for “Javascript count character in string”: The code to count all characters in string.

function countAllChars(str) {
var a = str.split("");
var obj = {};
a.forEach(function(s){
 var count=0;
 for(var j=0;j<a.length;j++){
 if(s==a[j]){
  count+=1;
 }
obj[a[j]]=count;
}
});
return obj;
}
console.log(countAllCharacters('ittutoria'));
Result: { i: 2, t: 3, u: 1, o: 1, a: 1 } 
count characterstring
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6 Answers

  1. Best Answer

    This is my approach

    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.
    • 16

  2. You can try this way

    var colors = ["Red", "Orange", "Blue", "Green"];
var colorsLength=colors.length;//4 is colors array length 
​
var str = "bug";
var strLength=str.length;//3 is the number of characters in bug
    • 21

  3. Here is my code, you can try

    function count (string) {  
  var count = {};
  string.split('').forEach(function(s) {
     count[s] ? count[s]++ : count[s] = 1;
  });
  return count;
}
    • 24

  4. You can try this way

    var str = "Hello World!";
var n = str.length;
    • 5

  5. This is my example

    "this is foo bar".split("o").length - 1;
// returns 2
    • 10

  6. This is the command I use, you can try

    var str="hello";
var n str.lenbth;
console(n);
​
    • 9

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