所以，我想把我的一些编码过程自动化。我想也许我不必手动命名所有引用类的常量，而是让一个函数来做。这是我的代码，我觉得它应该工作。当然它不工作。应该吗？如果不，为什么不呢？

function definitions() {
    var allElem = document.querySelectorAll("*"); //Get every HTML element.
    
    for(a = 0; a < allElem.length; a++) { //Iterate through every HTML element.
        
        if (allElem[a].classList.length == 0) { //If an element has no class...
            
            console.log("no var declared, " + a); //...ignore it.       
        
        } else { //If it has one or more classes...
            
            for(b = 0; b < allElem[a].classList.length; b++) { //...iterate through the classList.
                eval("const " + allElem[a].classList[b] + " = " + "document.getElementsByClassName('" + allElem[a].classList[b] + "');"); //Declare a constant named for the class if refers to
                console.log("const " + allElem[a].classList[b] + " = " + "document.getElementsByClassName('" + allElem[a].classList[b] + "');");                
            }
        }
    }
    console.log(document.getElementsByClassName('clone').length); //This logs 10, which is correct.
    console.log(clone.length); // 'Uncaught ReferenceError: clone is not defined'. But... but... I thought I did... :'(
}