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Evaluate your variables, with a simples function.
This is a simple way to check if a variable is setted and evaluate a value default depends the type of the variable.
npm install --save evaluateThe evaluate function need a variable and a type to works. In other cases it will throw an error. You can send a default value to the variable if the current variable is undefined.
var evaluate = require('evaluate');
function(vari, varDate) {
vari = evaluate(vari, 'string');
varDate = evaluate(varDate, 'date');
varInt = evaluate(varInt, 'integer', 10);
console.log(vari, varDate, varInt); // '', Thu Sep 17 2015 15:04:56 GMT-0300 (BRT), 10
}evaluate(vari, 'number', default); // If vari is undefined and default is not send the returned value is 0evaluate(vari, 'string', default); // If vari is undefined and default is not send the returned value is ''evaluate(vari, 'boolean', default); // If vari is undefined and default is not send the returned value is falseevaluate(vari, 'date', default); // If vari is undefined and default is not send the returned value is the current dateevaluate(vari, 'object', default); // If vari is undefined and default is not send the returned value is {}evaluate(vari, 'array', default); // If vari is undefined and default is not send the returned value is []
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