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pietro909/defensive-approach-javascript.js

Last active October 28, 2016 08:33
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Example of how to handle unknown input
Raw
defensive-approach-javascript.js
function contains(c, s) {
var index = typeof s === 'string' ? s.indexOf(c) : -1;
return index > -1;
}
console.log(contains("hi", "there")); // false
console.log(contains("hi", "hi, all")); // true
console.log(contains("hi", 1)); // false
console.log(contains("hi", null)); // false
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