C#执行Javascript代码的几种方法总结

前端技术 2023/09/03 C#

一、开源项目 Javascript .NET

地址： http://javascriptdotnet.codeplex.com/ 它是Google Chrome V8引擎在.NET上的封装，功能完善，性能相对较高，推荐使用! (缺点就是asp.net web应用上，好象会报错)

示例代码：

复制代码 代码如下:

using Noesis.Javascript;
using System;
using System.Collections.Generic;

namespace JsCSharp
{
    class Program
    {
        static void Main(string[] args)
        {
            using (JavascriptContext ctx = new JavascriptContext())
            {
                var i = ctx.Run(\"1+2\");
                Console.WriteLine(i);//3
                ctx.Run(\"var d = new Date(2013,9-1,2,20,30,15)\");
                var d = ctx.GetParameter(\"d\");
                Console.WriteLine(d);//2013/9/2 20:30:15
                var j = ctx.Run(\"function add(x,y){return x+y;};add(5,10);\");
                Console.WriteLine(j);//15
                ctx.Run(\"var obj = {};obj.name=\'jimmy\';obj.sex=\'Male\';obj.name=\'杨俊明\'\");
                var obj = ctx.GetParameter(\"obj\") as Dictionary<string, object>;
                foreach (var key in obj.Keys)
                {
                    Console.WriteLine(string.Format(\"{0}:{1}\", key, obj[key]));
                    //name:杨俊明
                    //sex:Male
                }
                var jsonArr = ctx.Run(\"[{Airport:\'PEK\',Name:\'北京首都机场\'},{Airport:\'XIY\',Name:\'西安咸阳机场\'}]\") as Array;
                foreach (var item in jsonArr)
                {
                    var json = item as Dictionary<string, object>;
                    foreach (var key in json.Keys)
                    {
                        Console.WriteLine(string.Format(\"{0}:{1}\", key, json[key]));
                        //Airport:PEK
                        //Name:北京首都机场
                        //Airport:XIY
                        //Name:西安咸阳机场
                    }
                }
                ctx.SetParameter(\"x\", 7);
                ctx.Run(\"function add(x,y){return x+y;}; function sub(x,y){return x-y;};k = add(2,x);var t = sub(9,1);\");
                var k = ctx.GetParameter(\"k\");
                Console.WriteLine(k);//9
                var t = ctx.GetParameter(\"t\");
                Console.WriteLine(t);//8
                Console.Read();
            }

        }

    }
}

部署时要注意，msvcp100.dll、msvcr100.dll这二个文件，要复制到bin目录下

二、利用Microsoft.JScript.Vsa

先添加Microsoft.JScript、Microsoft.Vsa二个程序集的引用，然后就能用了，示例代码如下:

复制代码 代码如下:

using Microsoft.JScript;
using Microsoft.JScript.Vsa;
using System;

namespace JsCSharp
{
    class Program
    {
        static VsaEngine Engine = VsaEngine.CreateEngine();

        static void Main(string[] args)
        {
            var i = (int)EvalJScript(\"1+2;\");
            Console.WriteLine(i);//3
            var d = (DateObject)EvalJScript(\"var d = new Date(2013,9-1,2,20,30,15)\");
            Console.WriteLine(d);//Mon Sep 2 20:30:15 UTC+8 2013
            var j = EvalJScript(\"function add(x,y){return x+y;};add(5,10);\");
            Console.WriteLine(j);//15
            var obj = EvalJScript(\"var obj = {};obj.name=\'jimmy\';obj.sex=\'Male\';\");
            Console.WriteLine(obj);//Male 注：只返回最后一条执行的语句结果
            Console.Read();
        }

 
        static object EvalJScript(string JScript)
        {
            object Result = null;
            try
            {
                Result = Microsoft.JScript.Eval.JScriptEvaluate(JScript, Engine);
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
            return Result;

        }
    }
}

Vsa的功能比较有限，多条语句执行时，只返回最后一条语句的执行结果。

本文地址：https://www.stayed.cn/item/8633

转载请注明出处。

本站部分内容来源于网络,如侵犯到您的权益,请 联系我

我的博客

人生若只如初见，何事秋风悲画扇。

我的标签

随笔档案