lodash几个常用方法

本文主要是介绍lodash几个常用方法，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

_.cloneDeep(value)

var objects = [{ 'a': 1 }, { 'b': 2 }];var deep = _.cloneDeep(objects);
console.log(deep[0] === objects[0]);
// => false

_.debounce

按钮防抖

created() {this.save = _.debounce(this.save, 300)
},

_.omit(object, [props])

对象去除

var object = { 'a': 1, 'b': '2', 'c': 3 };_.omit(object, ['a', 'c']);
// => { 'b': '2' }

_.pull(array, [values])

数组去除

var array = [1, 2, 3, 1, 2, 3];_.pull(array, 2, 3);
console.log(array);
// => [1, 1]

组合用法

this.options.series[0].type = _.sample(_.pull(['line', 'bar', 'scatter'], [this.options.series[0].type]))

_.keys(object)

取出对象中所有的key值组成新的数组

function Foo() {this.a = 1;this.b = 2;
}Foo.prototype.c = 3;_.keys(new Foo);
// => ['a', 'b'] (iteration order is not guaranteed)_.keys('hi');
// => ['0', '1']

_.pick(object, [props])

var object = { 'a': 1, 'b': '2', 'c': 3 };_.pick(object, ['a', 'c']);
// => { 'a': 1, 'c': 3 }

组合用法

this.form = _.pick(row, _.keys(this.form))

_.sample(collection)

随机

_.sample([1, 2, 3, 4]);
// => 2

_.random([lower=0], [upper=1], [floating])

随机，下限上限，返回是否有浮点数

_.random(0, 5);
// => an integer between 0 and 5_.random(5);
// => also an integer between 0 and 5_.random(5, true);
// => a floating-point number between 0 and 5_.random(1.2, 5.2);
// => a floating-point number between 1.2 and 5.2

_.round(number, [precision=0])

数字，精度

_.round(4.006);
// => 4_.round(4.006, 2);
// => 4.01_.round(4060, -2);
// => 4100

_.assign(object, [sources])

对象拼接

function Foo() {this.a = 1;
}function Bar() {this.c = 3;
}Foo.prototype.b = 2;
Bar.prototype.d = 4;_.assign({ 'a': 0 }, new Foo, new Bar);
// => { 'a': 1, 'c': 3 }

这篇关于lodash几个常用方法的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！

---