您可以将变量作为键传递到对象中，并将该对象传递给驱逐舰函数。这样，您的函数就可以使用对象的第一个键检索全局变量的名称，然后在窗口对象中删除它。
请注意，这将只适用于全局变量。
代码语言：javascript复制// retrieves the first key of the object passed as parameter
function getFirstKeyName(someObject){
return Object.keys(someObject)[0];
}
// destroy a global variable by its name
function destroyGlobalVariable(withinAnObject){
// retrieve the variable's name
var globalVarName = getFirstKeyName(withinAnObject);
console.log("Deleting global variable " + globalVarName);
// use delete, assign undefined or null to window[globalVarName];
delete window[globalVarName];
}
abcObj = {
a:1,
b:2
}
// abcObj should be defined :
console.log(abcObj);
// pass your variable name into an object, as a key
destroyGlobalVariable({abcObj});
// abcObj should not be defined now :
console.log(abcObj);