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How to use the contains function from lodash

Find comprehensive JavaScript lodash.contains code examples handpicked from public code repositorys.

lodash.contains has been deprecated in favor of lodash.includes and returns a boolean value indicating if a given value is present in an array or string.

astrobench.js

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* @param {*} target The value to check for.
* @param {number} [fromIndex=0] The index to search from.
* @returns {boolean} Returns `true` if the `target` element is found, else `false`.
* @example
*
* _.contains([1, 2, 3], 1);
* // => true
*
* _.contains([1, 2, 3], 1, 2);
* // => false

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+ 7 other calls in file

addon.js

GitHub: codespaces-io/akurath

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    return _.size(this.infos.scripts || {}) > 0;
};

// Check if the addon is blacklisted
this.isBlacklisted = function() {
    return _.contains(this.options.blacklist, this.infos.name);
};

// Optimize the addon
this.optimizeClient = function(force) {

+ 5 other calls in file

How does lodash.contains work?

lodash.contains is an old method that has been deprecated in favor of lodash.includes. lodash.includes checks if a given value is present in an array or string and returns a boolean. It works by using strict equality (===) to compare the value with each element in the array (or character in the string).

Gruntfile.js

GitHub: nodejs-tutorials/hello-ghost

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//
// ### Spawn Casper.js
// Custom test runner for our Casper.js functional tests
// This really ought to be refactored into a separate grunt task module
grunt.registerTask('spawnCasperJS', function (target) {
    target = _.contains(['client', 'setup'], target) ? target + '/' : undefined;

    var done = this.async(),
        options = ['host', 'noPort', 'port', 'email', 'password'],
        args = ['test']

+ 3 other calls in file

post.js

GitHub: nodejs-tutorials/hello-ghost

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// Unless `all` is passed as an option, filter on
// the status provided.
if (options.status !== 'all') {
    // make sure that status is valid
    options.status = _.contains(['published', 'draft'], options.status) ? options.status : 'published';
    options.where.status = options.status;
}

return options;

+ 9 other calls in file

Ai Example

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const _ = require("lodash");

const numbers = [1, 2, 3, 4, 5];

console.log(_.includes(numbers, 3)); // true
console.log(_.includes(numbers, 6)); // false

const sentence = "The quick brown fox jumps over the lazy dog";

console.log(_.includes(sentence, "fox")); // true
console.log(_.includes(sentence, "cat")); // false

In this example, we first require the lodash library and define an array of numbers and a sentence. We then use _.includes to check if the number 3 is present in the numbers array and if the word 'fox' is present in the sentence. We also check if the number 6 and the word 'cat' are present in the array and the string, respectively. The method returns true if the value is present and false if it's not.

user.js

GitHub: nodejs-tutorials/hello-ghost

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        model.emitChange('activated');
    }
});
this.on('updated', function onUpdated(model) {
    model.statusChanging = model.get('status') !== model.updated('status');
    model.isActive = _.contains(activeStates, model.get('status'));

    if (model.statusChanging) {
        model.emitChange(model.isActive ? 'activated' : 'deactivated');
    } else {

eval-markdown.js

GitHub: reggi/node-reggi

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  var evaluations = _.chain(mdResults).map('evaluated').flatten().value()
  var evalResults = _.chain(evaluations).map('evalResult').flatten().value()
  var evalResultsInstanceofError = _.map(evalResults, function (evalResult) {
    return evalResult instanceof Error
  })
  var evalResultsHasInstanceofError = _.contains(evalResultsInstanceofError, true)
  if (evalResultsHasInstanceofError) return 1
  return 0
}

+ 3 other calls in file

layoutBuilder.js

GitHub: MATC21/ITQ

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var followingNodesOnPage = _.chain(followingNodeList).drop(index + 1).filter(function (node0) {
      return _.contains(node0.nodeInfo.pageNumbers, pageNumber);
    }).value();

    var nodesOnNextPage = _.chain(followingNodeList).drop(index + 1).filter(function (node0) {
      return _.contains(node0.nodeInfo.pageNumbers, pageNumber + 1);
    }).value();

    var previousNodesOnPage = _.chain(followingNodeList).take(index).filter(function (node0) {
      return _.contains(node0.nodeInfo.pageNumbers, pageNumber);

+ 17 other calls in file

index.js

GitHub: lemanschik/direktspeed-database

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  if (arr.length < 2) {
    return false;
  }

  return _.contains(fileTypes, arr[1]);
}

// create proxy to couch for all couch requests
var proxy = httpProxy.createServer({

helpers.js

GitHub: Big-Brother/bitcore-wallet-service-square

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  helpers._utxos = utxos;
}

blockchainExplorer.getUtxos = function(addresses, cb) {
  var selected = _.filter(helpers._utxos, function(utxo) {
    return _.contains(addresses, utxo.address);
  });
  return cb(null, selected);
};

+ 3 other calls in file

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