Some functions of Nodejs Lodash

1 _.compact usage _.compact ([0, 1, False, 2, ', 3, ' mm ']);

var test = _.  Compact([ -1,0, 1, False, 2, ', 3, ' JJ ']);    Console.log (test);----1,1,2,3,jj//output  

2_.different usage

var test = _.difference ([1, 2, 3, 4, 5], [5, 2, ten]);    Console.log (test); 1,3,4//output Results  

3_.find usage

var characters = [  {' name ': ' Barney ', ' age ': $, '  blocked ': false},  {' name ': ' Fred ',    ' age ': +, ' Blocke d ': true},  {' name ': ' Pebbles ', ' age ': 1,  ' blocked ': false}];_.find (characters, function (CHR) {    console . log (chr.age);  return Chr.age < 40;}); Find

for (var n = 0; n < activities.length; n++) {         if (activities[n].name = = bidlist[0].activityname) {                   //(middle code omitted) middle The assumption is to change a property in the object of the activity found by the loop, such as  status, to change its value to 0;    }  Replace the _.find (activities,function (activity) {return activity.name = = Bidlist[0].activityname}) with the _.find method. Status = 0;  

4 Use Map to remove some for loops

var a = [0,1,2,3,4] for  (var i = 0;i < a.length;i++) {        a[i] = a[i]+1;  }  

Replace later

_.map (a,function (num) {        return num = num + 1;  })  

5 Replace for after replace if

var A;  if (activities.length) {        a = 1;  }  if (!activities.legth) {        a = 0;  }  

Replace later

Refactoring also has a lot of knowledge, now only use their own to comb them, and then continue to summarize.

The above describes the JavaScript Lodash usage summary, including the aspects of the content, I hope the JavaScript tutorial interested in a friend helpful.

Some functions of Nodejs Lodash