如何解析文本为JavaScript？ [英] How to parse text as JavaScript?

问题描述

这个问题我的（目前没有答案），开车让我找到一个更好的解决方案，我正在尝试。

我的要求：

•没有 id ：

 <$ c可以任意添加到文档中的代码块$ c>< div class =thing> 
< elements ... /> 
< / div> 
  

•对象被扫描并由外部脚本找到：

  var things = yd.getElementsBy（function（el）{
 return yd.hasClass（'thing'）; 
}，null，document）; 
  

•对象必须单独配置，我目前是基于标识符的：

 < div class =thingid = thing0 > 
< elements ... /> 
< script type =text / javascript> 
 new Thing（）。init（{id：'thing0';}）; 
< / script> 
< / div> 
  

•因此，我需要将标识符（ id =thing0）进行排列，因此当多个相同代码块添加到页面时，没有重复的

•我仍然需要能够单独配置这些对象，没有标识符

---

SO！所有这一切都说，我想知道在每个添加的代码块的脚本块内创建一个动态全局变量，在其脚本标签中。当发现每个东西，我认为抓住脚本标签的innerHTML是合法的，并以某种方式将该文本转换为可用的JS对象。

讨论。好的，不要讨论，如果你喜欢，但如果你得到漂移，然后随意纠正我的思路或提供更好的解决方案 - 请！

d

解决方案

我明白你来自哪里，唯一的建议我可以给你这个是查看eval（）标签。 eval（）函数评估和/或执行JavaScript代码字符串。首先，eval（）确定参数是否是有效的字符串，然后eval（）解析查找JavaScript代码的字符串。如果它找到任何JavaScript代码，它将被执行。

所以你可以使用eval（）标签来解析DIV或任何元素中的文本。对不起，我无法进一步帮助你。

This question of mine (currently unanswered), drove me toward finding a better solution to what I'm attempting.

My requirements:

• Chunks of code which can be arbitrarily added into a document, without an id:

<div class="thing">
  <elements... />
</div>

• The objects are scanned for and found by an external script:

var things = yd.getElementsBy(function(el){
    return yd.hasClass('thing');
},null,document );

• The objects must be individually configurable, what I have currently is identifier-based:

<div class="thing" id="thing0">
    <elements... />
    <script type="text/javascript">
      new Thing().init({ id:'thing0'; });
    </script>
</div>

• So I need to ditch the identifier (id="thing0") so there are no duplicates when more than one chunk of the same code is added to a page

• I still need to be able to config these objects individually, without an identifier

---

SO! All of that said, I wondered about creating a dynamic global variable within the script block of each added chunk of code, within its script tag. As each 'thing' is found, I figure it would be legit to grab the innerHTML of the script tag and somehow convert that text into a useable JS object.

Discuss.

Ok, don't discuss if you like, but if you get the drift then feel free to correct my wayward thinking or provide a better solution - please!

d

解决方案

I kind of understand where you are coming from and the only advice I can give you on this is to look into the eval() tag. The eval() function evaluates and/or executes a string of JavaScript code. First, eval() determines if the argument is a valid string, then eval() parses the string looking for JavaScript code. If it finds any JavaScript code, it will be executed.

So you could parse the text inside of a DIV or any element by using the eval() tag. Sorry I couldn't help you further.

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