85 lines
2.8 KiB
C#
85 lines
2.8 KiB
C#
using JavaScriptEngineSwitcher.V8;
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namespace JNPF.Extras.Thirdparty.JSEngine;
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/// <summary>
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/// js处理引擎.
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/// </summary>
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public class JsEngineUtil
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{
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/// <summary>
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/// 执行Js(返回结果请用result).
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/// 如：var result = function(a,b){}.
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/// </summary>
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/// <param name="jsContent">js内容.</param>
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/// <param name="args">参数.</param>
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/// <returns></returns>
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public static object CallFunction(string jsContent, params object[] args)
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{
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try
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{
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V8JsEngine engine = new V8JsEngine();
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engine.Execute(jsContent);
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return engine.CallFunction("result", args);
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}
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catch (Exception e)
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{
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throw new Exception("不支持的JS数据");
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}
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}
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/// <summary>
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/// 执行聚合函数Js(返回结果请用result).
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/// 如：var result = function(a,b){}.
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/// </summary>
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/// <param name="jsContent">js内容.</param>
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/// <param name="args">参数.</param>
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/// <returns></returns>
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public static object AggreFunction(string jsContent, params object[] args)
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{
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try
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{
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var aggreFunc = "function getNum(val) {\n" +
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" return isNaN(val) ? 0 : Number(val)\n" +
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"};\n" +
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"// 求和\n" +
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"function SUM() {\n" +
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" var value = 0\n" +
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" for (var i = 0; i < arguments.length; i++) {\n" +
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" value += getNum(arguments[i])\n" +
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" }\n" +
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" return value\n" +
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"};\n" +
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"// 求差\n" +
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"function SUBTRACT(num1, num2) {\n" +
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" return getNum(num1) - getNum(num2)\n" +
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"};\n" +
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"// 相乘\n" +
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"function PRODUCT() {\n" +
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" var value = 1\n" +
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" for (var i = 0; i < arguments.length; i++) {\n" +
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" value = value * getNum(arguments[i])\n" +
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" }\n" +
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" return value\n" +
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"};\n" +
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"// 相除\n" +
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"function DIVIDE(num1, num2) {\n" +
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" return getNum(num1) / (getNum(num2) === 0 ? 1 : getNum(num2))\n" +
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"};\n" +
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"// 获取参数的数量\n" +
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"function COUNT() {\n" +
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" return arguments.length\n" +
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"};\n";
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aggreFunc = aggreFunc + "var result =function(){ return " + jsContent + "}";
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V8JsEngine engine = new V8JsEngine();
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engine.Execute(aggreFunc);
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return engine.CallFunction("result", args);
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}
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catch (Exception e)
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{
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return "";
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}
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}
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}
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