string methods javascript count number of words inside a string
<html>
<body>
<script>
function countWords(str) {
str = str.replace(/(^\s*)|(\s*$)/gi,"");
str = str.replace(/[ ]{2,}/gi," ");
str = str.replace(/\n /,"\n");
return str.split(' ').length;
}
document.write(countWords(" Tutorix is one of the best E-learning platforms"));
</script>
</body>
</html>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}`)
//recorrences 3Copyright © 2021 Codeinu
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