count characters in string javascript code example
Example 1: 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.
Example 2: javascript string lentrh
var myString = "string test";
var stringLength = myString.length;
console.log(stringLength);
Example 3: javascript length
var colors = ["Red", "Orange", "Blue", "Green"];
var colorsLength=colors.length;
var str = "bug";
var strLength=str.length;
Example 4: how get count of letters in javascript
$("#about_me_textarea").val().length
Example 5: count value a to b character javascript
const recorrences = ['a', 'b', 'c', 'a', 'b','a']
.map(i => !!~i.indexOf('a'))
.filter(i => i)
.length;
console.log(`recorrences ${recorrences}`)
Example 6: count characters in typescript
function count (string) {
var count = {};
string.split('').forEach(function(s) {
count[s] ? count[s]++ : count[s] = 1;
});
return count;
}