javascript 需要一个标识符，却看到了 ')'
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Expected an identifier and instead saw ')'
提问by GibboK
I receive this error,
我收到此错误，
Expected an identifier and instead saw ')'.
in this lines of code. Any how to fix it?
在这行代码中。任何如何修复它？
for (; index < nPageFullItemCnt; index++) {
strIndex = "0" + index;
keyIndex = "popup_item_" + strIndex.substr(strIndex.length - 2, 2);
keyItem = document.getElementById(keyIndex);
setPopupKeyText(keyIndex, " ");
keyItem.className = "popupLangItemNone";
keyItem.langId = "";
}
采纳答案by BenM
You're not passing in the first parameter to the for()loop:
您没有将第一个参数传递给for()循环：
for (index = 0; index < nPageFullItemCnt; index++)
{
/* .. */
}
回答by Cerbrus
This bit:
这一点：
for (; index
Is causing that error. The code should validate if you do this:
导致该错误。如果您这样做，代码应该验证：
for (0; index
(As I assume you're not passing the first parameter, on purpose)
（因为我假设您没有故意传递第一个参数）
However, I'd suggest using a whileloop, instead of a for, if you're not going to make use of the [initialization]; [condition]; [final-expression]properties in a forloop.
但是，while如果您不打算[initialization]; [condition]; [final-expression]在for循环中使用属性，我建议使用循环而不是 for 。
while(index < nPageFullItemCnt){
// Do stuff;
index++;
}
Technically, the 3 parameters are all optional, but some code validators can throw a error if they're missing.
从技术上讲，这 3 个参数都是可选的，但是如果缺少某些代码验证器，则可能会引发错误。
