[英]Why doesn't my javascript quiz load properly?
我正在尝试做一个简单的测验。 不知何故我总是有一个错误
“未定义 Vue”
但是,它实际上是在那里定义的。 我不完全了解是什么原因。 网站链接在这里。 脚本就在页面的开头。 我曾尝试将 javascript 代码用作单独的文件,但错误是相同的。 我是 javascript 的新手,所以任何帮助将不胜感激。
"use strict";
window.onload = function() {
var quiz = {
title: 'What superhero are you?',
questions: [{
text: "How would you describe your personality?",
responses: [{
text: 'Im serious and dark',
value: 'Batman'
},
{
text: 'Arrogant, but charming',
value: 'Superman'
},
{
text: 'Fun and easy going',
value: 'The Flash'
}
]
},
{
text: "Why did you want to become a superhero?",
responses: [{
text: 'For the thrills',
value: 'The Flash'
},
{
text: 'For justice',
value: 'Batman'
},
{
text: 'For popularity',
value: 'Superman'
}
]
},
{
text: "Who would you most hang around with?",
responses: [{
text: 'Wonder Woman',
value: 'Superman'
},
{
text: 'Green Arrow',
value: 'The Flash'
},
{
text: 'Robin',
value: 'Batman'
}
]
},
{
text: "What's your favourite colour?",
responses: [{
text: 'Black',
value: 'Batman'
},
{
text: 'Red',
value: 'The Flash'
},
{
text: 'Blue',
value: 'Superman'
}
]
},
{
text: "When do you help people?",
responses: [{
text: 'Every chance I can',
value: 'The Flash'
},
{
text: 'At night',
value: 'Batman'
},
{
text: 'When they need me to',
value: 'Superman'
}
]
},
]
};
var app = new Vue({
el: '#app',
data: {
quiz: quiz,
questionIndex: 0,
userResponses: Array()
},
methods: {
// Go to next question
next: function() {
this.questionIndex++;
console.log(this.userResponses);
},
// Go to previous question
prev: function() {
this.questionIndex--;
},
score: function() {
//find the highest occurence in responses
var modeMap = {};
var maxEl = this.userResponses[0],
maxCount = 1;
for (var i = 0; i < this.userResponses.length; i++) {
var el = this.userResponses[i];
if (modeMap[el] == null)
modeMap[el] = 1;
else
modeMap[el]++;
if (modeMap[el] > maxCount) {
maxEl = el;
maxCount = modeMap[el];
}
}
return maxEl;
}
}
});
}
你实际上并没有加载 Vue。 确保在实例化它的实例之前加载 Vue。
您可以使用 CDN 加载脚本,如 Ashish 所示,或者将脚本保存到本地计算机,并将其包含在您的页面中。
<script src="/js/vue-2.5.22.min.js" type="text/javascript"/>
其中/js/vue-2.5.22.min.js
是 Vue 所在位置的相对路径。
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