番禺网站推广,外包网站,谷歌网站诊断,优秀移动端网站之前测试了很多JS引擎#xff0c;都只支持es5语法#xff0c;不支持执行es6#xff0c;测试了下微软的V8反正能跑通#xff0c;应该是支持的。还得是微软呀。
如图#xff1a;安装相关包#xff1a; 这是参考的官方V8代码
using Microsoft.ClearScript.JavaScript;
us…之前测试了很多JS引擎都只支持es5语法不支持执行es6测试了下微软的V8反正能跑通应该是支持的。还得是微软呀。
如图安装相关包 这是参考的官方V8代码
using Microsoft.ClearScript.JavaScript;
using Microsoft.ClearScript.V8;
using Microsoft.ClearScript;
using System.Security.Cryptography;using (var engine new V8ScriptEngine()){// 指定JavaScript文件路径string filePath D:\test\CallJS\CallJS\test.js;// 读取JavaScript文件内容string javascriptCode File.ReadAllText(filePath);// expose a host typeengine.Execute(var window this;);engine.AddHostType(Console, typeof(Console));var type mp3;var mid 440613;var para $corpkuwop2p1typeconvert_url2sig0format{type}rid{mid};string str Console.WriteLine(encryptQuery(112233));string str1 Console.WriteLine(encryptQuery(para)).Replace(para, para);engine.Execute(javascriptCode C#有偿群927860652);engine.Execute(javascriptCode str1);engine.Execute(Console.WriteLine({0} is an interesting number., Math.PI));// expose a host objectengine.AddHostObject(random, new Random());engine.Execute(Console.WriteLine(random.NextDouble()));// expose entire assembliesengine.AddHostObject(lib, new HostTypeCollection(mscorlib, System.Core));engine.Execute(Console.WriteLine(lib.System.DateTime.Now));// create a host object from scriptengine.Execute(birthday new lib.System.DateTime(2007, 5, 22);Console.WriteLine(birthday.ToLongDateString()););// use a generic class from scriptengine.Execute(Dictionary lib.System.Collections.Generic.Dictionary;dict new Dictionary(lib.System.String, lib.System.Int32);dict.Add(foo, 123););// call a host method with an output parameterengine.AddHostObject(host, new HostFunctions());engine.Execute(intVar host.newVar(lib.System.Int32);found dict.TryGetValue(foo, intVar.out);Console.WriteLine({0} {1}, found, intVar););// create and populate a host arrayengine.Execute(numbers host.newArr(lib.System.Int32, 20);for (var i 0; i numbers.Length; i) { numbers[i] i; }Console.WriteLine(lib.System.String.Join(, , numbers)););// create a script delegateengine.Execute(Filter lib.System.Func(lib.System.Int32, lib.System.Boolean);oddFilter new Filter(function(value) {return (value 1) ? true : false;}););// use LINQ from scriptengine.Execute(oddNumbers numbers.Where(oddFilter);Console.WriteLine(lib.System.String.Join(, , oddNumbers)););// use a dynamic host objectengine.Execute(expando new lib.System.Dynamic.ExpandoObject();expando.foo 123;expando.bar qux;delete expando.foo;);// call a script functionengine.Execute(function print(x) { Console.WriteLine(x); });engine.Script.print(DateTime.Now.DayOfWeek);// examine a script objectengine.Execute(person { name: Fred, age: 5 });Console.WriteLine(engine.Script.person.name);// read a JavaScript typed arrayengine.Execute(values new Int32Array([1, 2, 3, 4, 5]));var values (ITypedArrayint)engine.Script.values;Console.WriteLine(string.Join(, , values.ToArray()));}稍微看下官网案例就知道怎么用了。
再记录下es6转es5步骤
1.npm执行以下命令 npm install -g babel-cli 安装babel
2.查看版本 babel --version
3.初始化项目 执行npm init -y
4.安装转换包 npm install --save-dev babel-preset-es2015
5.转为新es5语法文件 babel src -d dist 记得把要转换的文件放在项目根目录我把js文件放在根目录下的src文件夹中然后创建.babelrc配置文件在根目录中 内容如下
{presets: [es2015],plugins: []
}然后会在根目录生成新的dist文件夹es5版本的JS在里面。
