介绍
本库是OpenHarmony系统下基于js-tokens库使用的开发示例，js-tokens 是一个微型JavaScript的分词器。小巧的、正则表达式驱动的、宽松的、几乎符合规范的 JavaScript 标记器
下载安装
1.如果已安装好nodejs后，输入以下命令
ohpm install js-tokens
2.在需要使用的页面导入js-tokens
import jsTokens from 'js-tokens'
var tokens = jsTokens.default
var matchToToken = jsTokens.matchToToken
使用说明
jsTokens
A regex with the g flag that matches JavaScript tokens.
The regex always matches, even invalid JavaScript and the empty string.
The next match is always directly after the previous.
var token = matchToToken(match)
import {matchToToken} from "js-tokens"
Takes a match returned by jsTokens.exec(string), and returns a {type: String, value: String} object. The following types are available:
- string
- comment
- regex
- number
- name
- punctuator
- whitespace
- invalid
Multi-line comments and strings also have a closed property indicating if the token was closed or not (see below).
Comments and strings both come in several flavors. To distinguish them, check if the token starts with //, /*, ', " or `.
Names are ECMAScript IdentifierNames, that is, including both identifiers and keywords. You may use [is-keyword-js] to tell them apart.
Whitespace includes both line terminators and other whitespace.
DD一下：欢迎大家关注工粽号<程序猿百晓生>，可以了解到以下知识点。
`欢迎大家关注工粽号<程序猿百晓生>，可以了解到以下知识点学习。`
1.OpenHarmony开发基础
2.OpenHarmony北向开发环境搭建
3.鸿蒙南向开发环境的搭建
4.鸿蒙生态应用开发白皮书V2.0 & V3.0
5.鸿蒙开发面试真题（含参考答案）
6.TypeScript入门学习手册
7.OpenHarmony 经典面试题(含参考答案)
8.OpenHarmony设备开发入门【最新版】
9.沉浸式剖析OpenHarmony源代码
10.系统定制指南
11.【OpenHarmony】Uboot 驱动加载流程
12.OpenHarmony构建系统--GN与子系统、部件、模块详解
13.ohos开机init启动流程
14.鸿蒙版性能优化指南
.......
限制描述
1、Tokenizing JavaScript using regexes—in fact, one single regex—won’t be perfect. But that’s not the point either.
You may compare jsTokens with [esprima] by using esprima-compare.js. See npm run esprima-compare!
2、Template strings are matched as single tokens, from the starting to the ending , including interpolations (whose tokens are not matched individually).
Matching template string interpolations requires recursive balancing of { and }—something that JavaScript regexes cannot do. Only one level of nesting is supported.
3、Division and regex literals collision
Consider this example:
var g = 9.82
var number = bar / 2/g
var regex = / 2/g
接口说明
1、jsTokens.default; // 正在匹配表达式
2、jsTokens.matchToToken // 分词器 function
软件架构
|-ets
| |-Application
| |-AbilityStage.ts
| |-MainAbility
| |-MainAbility.ts
| |-pages
| |-index.ets #主页demo
