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> npm install --save lodash

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console.log('Start app.');

const _  = require('lodash');
判斷是否為字串
console.log(_.isString(true));
console.log(_.isString("abc"));

//篩選重複陣列
var filteredArray = _.uniq(['Jonson'
 
,1,'Jonson',1,2,3,4]);
console.log(filteredArray);

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> node app.js

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Start app.
false
true
[ 'Jonson', 1, 2, 3, 4 ]

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