javascript - jQuery camel-case mapping from "data-" attribute names to ".data()" keys -

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If you add a "data-" attribute on an element: 

   Div id = 'x' data-key = 'value' & gt;   
 Then you can get the value through the jQuery ".data ()" method:  
  Warning ($ ('$ x'). Data ('key')); // Alert "value"   
 The library uses constant camel-case converter for attribute names with embedded dashes:  
  & lt; Div id = 'x' data-hello-world = "hi" & gt; Warning ($ ('# x') data ("HelloWorld").);   
 Camel-case converter is a jQuery "global" function:  
  Warning ($ .aum cass ("hello-world"); // Alert "Hello World" Although this is all broken when the attribute name contains the name of the single letter surrounded by a dash:  
  & Lt; Div id = 'x' data-image-x-offset = '50px '& gt; Warning ($ ('# x') data ('imageXOffset').); // Undefined   
 This is a bit weird, because:  
  Warning ($ .im image-x-offset '); // "imageXOffset"   
 So what's wrong? I think this is something that has something to do with the mechanism used to go in the  Other  direction, which was already converting the name of the camel-case back into a dashed shape. I can not even despise it in code though.  
 1.6.3 seems to be equal to 1.6.3. (By the way, "image-x-offset" can be used to get data.)  
  Edit  - If, for a given element, you Before trying the form of a camel-case, the  first  dashed form, then it works (and it tells me that it is definitely one: -)   
 
 
 You are right, Rege is used to convert this issue with that camera Reckon with S. To dash from cas  
  rmultiDash = / ([a-z]) ([A-Z]) / g;   
 ...:  
  var name = "data-" + key.replace (rmultiDash, "$ 1- $ 2") .toLowerCase ( );   
 ... resulting in:  
  Data-Image-Exofet   
 ... instead: < / P> 
  data-image-x-offset   
  demo:   
 So when you use debash The version, when it looks for a feature, does not get any requirement for the conversion, and then adds the Omal Cas version to the data of elements in  jQuery.cache .  
 The subsequent efforts will work because the right camel is now, so now it is not tried to get it as a specialty, and hence no mistake is required for regex.

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