Underscore.js _.neq() 方法
_.neq()方法使用松散不等式 (!=) 检查每个参数是否不等于前一个参数。因此,相应地返回一个布尔值。
句法:
_.neq( val1, val2, ..., valn );
参数:此方法需要 n 个值对其进行操作。
返回值:此方法返回一个布尔值。
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:
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var neq = _.neq( 3, 1 );
console.log("Each arguments are not equal to previous one :", neq);
输出:
Each arguments are not equal to previous one : true
示例 2:
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var neq = _.neq( 4, 4 );
console.log("Each arguments are not equal to previous one :", neq);
输出:
Each arguments are not equal to previous one : false
示例 3:
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var neq = _.neq( 4, 2, 1 );
console.log("Each arguments are not equal to previous one :", neq);
输出:
Each arguments are not equal to previous one : true
示例 4:
// Defining underscore contrib variable
var _ = require('underscore-contrib');
var neq = _.neq( 2, 2, 2 );
console.log("Each arguments are not equal to previous one :", neq);
输出:
Each arguments are not equal to previous one : false