underscore.js常用的API

过滤

var bigClassData = _.filter(data.Results, function (num) { return num.ClassType == 0; });

var finishTestArr = _.where(testedArr, { MissDataType: 0 });

var scoreArr = _.sortBy(itemObjectScoreArr, 'Score');

var boyMinValue: _.min(scoreArr['boy'])

var numbers = [10, 5, 100, 2, 1000];
_.min(numbers);
=> 2

var boyMinValue: _.max(scoreArr['boy'])

var stooges = [{name: 'moe', age: 40}, {name: 'larry', age: 50}, {name: 'curly', age: 60}];
_.max(stooges, function(stooge){ return stooge.age; });
=> {name: 'curly', age: 60};

_.forEach

_.map

_.pluck

var stooges = [{name: 'moe', age: 40}, {name: 'larry', age: 50}, {name: 'curly', age: 60}];
_.pluck(stooges, 'name');
=> ["moe", "larry", "curly"]

_.uniq

_.isNull

_.omit

_.each

var finishTestArr = _.groupBy(testedArr, { MissDataType: 0 });

var finishTestArr =_.groupBy([1.3, 2.1, 2.4], function(num){ return Math.floor(num); });
=> {1: [1.3], 2: [2.1, 2.4]}

参考

Underscore.js(1.8.3) 中文文档

underscore.js源码解析（一）