在Javascript中将字符串（是一个函数）转换回函数 [英] Convert string (was a function) back to function in Javascript

问题描述

我在下面将此功能作为字符串。我如何将其转换回函数？我从JQuery事件中提取事件处理程序，我想将它们存储为字符串，然后将它们转换回来，因为它们将保存在mySQL中

I have this function below as a string. How would I convert it back into a function? I am pulling event handlers from JQuery events and I want to store them as string then convert them back because they will be saved in mySQL

function () {

    if (!GActiveClick) {
        return;
    }
    SaveProduct();
}

推荐答案

var func = new Function(theFunctionString);
func();

MDN ：

new Function（[arg1 [，arg2 [，... argN]]，] functionBody）

new Function ([arg1[, arg2[, ... argN]],] functionBody)

参数

Parameters

arg1，arg2，... argN

函数用作正式参数名称的名称。每个必须是一个字符串，对应于有效的JavaScript标识符或用逗号分隔的此类字符串列表;例如x，theValue或a，b。

arg1, arg2, ... argN
Names to be used by the function as formal argument names. Each must be a string that corresponds to a valid JavaScript identifier or a list of such strings separated with a comma; for example "x", "theValue", or "a,b".

functionBody

包含包含函数定义的JavaScript语句的字符串。

functionBody
A string containing the JavaScript statements comprising the function definition.

---

更新：

全部这是一个非常糟糕的做法！

你应该有一个泛型函数来获取构建你想要的参数。唯一改变的是参数。将这些参数存储在您拥有的数据库中。

All this a very bad practice!
You should have a generic function that get parameters that build what you want. The only thing that change are the parameters. Store those parameters in the DB you have.

这篇关于在Javascript中将字符串（是一个函数）转换回函数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！