Underscore.js _.sub() 方法
这 _。 sub () 方法 r返回所有给定参数的差值。
句法:
_.sub( val1, val2, ..., valn );
参数:此方法返回 n 个值以对其进行操作。
返回值:此方法返回所有给定参数的差值。
注意:这在普通 JavaScript 中不起作用,因为它需要安装 underscore.js contrib 库。 Underscore.js contrib 库可以使用npm install underscore-contrib –save 安装。
示例 1:
Javascript
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var diff = _.sub( 10, 2, 4, 1 );
console.log("The Difference is : ", diff);
Javascript
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var diff = _.sub( 10 );
console.log("The Difference is : ", diff);
Javascript
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var diff = _.sub( 1, 3, 5, 7, 9, 99, 100 );
console.log("The Difference is : ", diff);
输出:
The Difference is : 3
示例 2:
Javascript
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var diff = _.sub( 10 );
console.log("The Difference is : ", diff);
输出:
The Difference is : 10
示例 3:
Javascript
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var diff = _.sub( 1, 3, 5, 7, 9, 99, 100 );
console.log("The Difference is : ", diff);
输出:
The Difference is : -222