SyntaxError: missing;在for循环初始化式之后

SyntaxError: missing ; after for-loop initializer

本文关键字：循环 初始化 之后 for missing SyntaxError      更新时间：2023-09-26

显示缺失等错误;在for循环。谢谢你的帮助。

 function checkAttempt(){
        var studentID = document.getElementById("studentID").value;
        var attempt = 0;
        for (attempt < 3 && studentID == localStorage.studentID){
            gradeTest;
            attempt = attempt + 1;
            localStorage.attempt = attempt;
            }       
        }

将for替换为while:

function checkAttempt(){
    var studentID = document.getElementById("studentID").value;
    var attempt = 0;
    while (attempt < 3 && studentID == localStorage.studentID{
        gradeTest;
        attempt = attempt + 1;
        localStorage.attempt = attempt;
    }       
}
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