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CODE EXAMPLE FOR JAVASCRIPT

js substr

//str.substr(start[, length])
var str = 'abcdefghij';

console.log('(1, 2): '   + str.substr(1, 2));   // '(1, 2): bc'
console.log('(-3, 2): '  + str.substr(-3, 2));  // '(-3, 2): hi'
console.log('(-3): '     + str.substr(-3));     // '(-3): hij'
console.log('(1): '      + str.substr(1));      // '(1): bcdefghij'
console.log('(-20, 2): ' + str.substr(-20, 2)); // '(-20, 2): ab'
console.log('(20, 2): '  + str.substr(20, 2));  // '(20, 2): '
Source by www.tutorialstonight.com #
 
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