how to count specific letters in string js
console.log(("str1,str2,str3,str4".match(/,/g) || []).length); //logs 3
console.log(("str1,str2,str3,str4".match(new RegExp("str", "g")) || []).length); //logs 4how to count specific letters in string js
console.log(("str1,str2,str3,str4".match(/,/g) || []).length); //logs 3
console.log(("str1,str2,str3,str4".match(new RegExp("str", "g")) || []).length); //logs 4Javascript count instances of character in a string
function countInstancesOf(letter, sentence) {
var count = 0;
for (var i = 0; i < sentence.length; i++) {
if (sentence.charAt(i) === letter) {
count += 1;
}
}
return count;
}Copyright © 2021 Codeinu
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