how to change a specific character in a string js code example
Example 1: replacing characters in string javascript
var myStr = 'this,is,a,test';
var newStr = myStr.replace(/,/g, '-');
console.log( newStr ); // "this-is-a-test"
Example 2: javascript string change character at index
String.prototype.replaceAt=function(index, char) {
var a = this.split("");
a[index] = char;
return a.join("");
}