有没有理由使用没有重复前缀的MOVS / CMPS / STOS / SCAS？(Is there any reason to use MOVS/CMPS/STOS/SCAS without a repeat prefix?)

 您应该使用对象创建一个映射，并使用该ID作为属性名称： 
 
var objects = {};

var characteristicElements = document.getElementsByClassName("characteristic");
for ( var i = 0 ; i < characteristicElements.length ; i++ ) {
    objects[characteristicElements[i].id] = {'set': false, val: 0, unn: 0 };
}
 
 Afaik你必须将set放在引号中，因为它是对象文字中的关键字。 我可能错了。 另请注意， getElementsByClassName在IE8及之前不可用。 
 
 我建议阅读MDN JavaScript指南 - 使用对象 。 

You should create a map then, using an object, and use the ID as property name:
 
var objects = {};

var characteristicElements = document.getElementsByClassName("characteristic");
for ( var i = 0 ; i < characteristicElements.length ; i++ ) {
    objects[characteristicElements[i].id] = {'set': false, val: 0, unn: 0 };
}
 
Afaik you have to put set in quotes because it is a keyword in object literals. I could be wrong though. Also note that getElementsByClassName is not available in IE8 and before.
 
I recommend reading the MDN JavaScript Guide - Working with Objects.