我正在尝试编写这个简单的代码,从 JSON 数据中创建 3 个多项选择题, 由于超出我理解的原因,发生的是一个永恒的循环,其中最后一个问题被一次又一次地写入页面,直到崩溃...... 我们将非常感谢帮助和建议。
var questions = {
"qestion":["what is bla?", "what is bla bla?", "what is bla bla bla?"],
"answer":[["aaa","bbb","ccc","ddd"], ["eee","fff","ggg","hhh"], ["zzz","xxx","yyy","www"]],
"correctAns":[1,2,3]};
String.prototype.format = function() {
var formatted = this;
for (i=0; i< arguments.length; i++) {
var regexp = new RegExp('\\{'+i+'\\}', 'gi');
formatted = formatted.replace(regexp, arguments[i]);
}
return formatted;
};
function writeQuestions() {
for (i=0 ;i<=2; i++) {
answerRdy = [];
qestionRdy = questions.qestion[i];
answerRdy[0] = questions.answer[i][0];
answerRdy[1] = questions.answer[i][1];
answerRdy[2] = questions.answer[i][2];
answerRdy[3] = questions.answer[i][3];
divID = "question-" + i;
writeAnswer = [];
writeAnswer[writeAnswer.length] = ("\n<div id='{0}'>\n<form method='post' onsubmit='return validate(this);'>\n").format(divID);
writeAnswer[writeAnswer.length] = ("<b>" + qestionRdy + "</b><br />\n");
for (n=0; n<=3; n++) {
writeAnswer[writeAnswer.length] = ("<input type='radio' name='answer' value='{0}' /> {1} <br />\n").format(n, answerRdy[n]);
}
writeAnswer[writeAnswer.length] = ("<input type='submit' value='Submit your answer'>\n</form>\n</div><!--{0}-->").format(divID);
joinQuestion = writeAnswer.join();
exp = /,/gi;
fullQuestion = joinQuestion.replace(exp, "");
$('#container').append(fullQuestion);
}
}
最佳答案
我改变了 for 循环来声明迭代的局部变量,并将终止长度链接到适当的对象,这似乎可以解决问题。例如:
for (i=0 ;i<=2; i++) {
变成:
for (var i = 0, len = questions.answer.length; i < len; i++) {
关于javascript - 简单 HTML 表单创建循环中的永恒循环,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5954915/