Uppercase the first letter of a string in javascript

Method 1 : using regex

str.replace(/^[a-z]/, function(m){ return m.toUpperCase() });

Method 2 : using substr

str.substr(0, 1).toUpperCase() + str.substr(1);

Method 3 : using string chars as array

str[0].toUpperCase() +str.substring(1);

Method 4 : using .charAt(0)

str.charAt(0).toUpperCase() + str.substring(1);

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