read character from image in javascript code example

Example 1: How to remove text from a string in javscript

var ret = "data-123".replace('data-','');
console.log(ret);   //prints: 123

Example 2: assigning a value to a character in string or text file in python

note:text can contain your text file that is already read or a string

text = 'hello'

vocab=sorted(set(text))
char_to_ind = {char:ind for ind,char in enumerate(vocab)}