Lodash _.isFinite() 方法
Lodash _.isFinite() 方法检查给定值是否是原始有限数并返回相应的布尔值。
句法:
_.isFinite( value )
参数:此方法接受上面提到的单个参数,如下所述:
- value:此参数保存要检查的原始有限数的值。
返回值:此方法返回一个布尔值(如果给定值是有限数则返回真,否则返回假)。
示例 1:
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+_.isFinite(10));
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+_.isFinite(Infinity));
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+ _.isFinite("gfg"));
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+_.isFinite(Number.MAX_VALUE));
输出:
The Value is Finite : true
示例 2:对于 Infinity,它返回 false。
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+_.isFinite(Infinity));
输出:
The Value is Finite : false
示例 3:对于字符串,它返回 false。
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+ _.isFinite("gfg"));
输出:
The Value is Finite : false
示例 4:
Javascript
// Defining Lodash variable
const _ = require('lodash');
// Checking for Finite Value
console.log("The Value is Finite : "
+_.isFinite(Number.MAX_VALUE));
输出:
The Value is Finite : true