Question

我是Handlebars.js的新手，我试图根据我在JS中定义的变量找出如何在单选按钮上使用name属性。

下面的代码当前给出了我想要的输出，除了我想根据变量的值将name属性设置为不同的名称。例如，如果变量编号设置为4，我希望所有输入的名称为＆＃39; answer4＆＃39;。

一些额外的背景信息：数字变量在测验函数中被设置为参数，即测验（＆＃34; quizJSONFile＆＃34;，数字）;我使用数字来定义哪些html元素可以附加测验问题和答案。

HTML：

<script id="radio-template" type="x-handlebars-template">
    {{#each this}}
        <input name='answer' type='radio' value='{{@index}}' >{{this}}<br>
    {{/each}}
</script>

JS：

function createRadios(){
var radioScript = $("#radio-template").html();
var template = Handlebars.compile(radioScript);
 $("#question").append(template(allQuestions[counter].choices));
};

JSON：

var allQuestions = [{
  question: "How many presidents were members of the Whig party?",
  choices: ["Four", "Three", "Two"],
  correct: 0
}, {
  question: "Who was the first president to be impeached?",
  choices: ["Andrew Jackson", "Andrew Johnson", "Warren Harding"],
  correct: 1
}, {
  question: "How many presidents died during their presidency?",
  choices: ["Four", "Six", "Eight"],
  correct: 2
}, {
  question: "How many presidents had no party affiliation?",
  choices: ["One", "Two", "Three"],
  correct: 0
}, {
  question: "Who was the only president to serve two non-consecutive terms, making him both the 22nd and 24th president?",
  choices: ["John Quincy Adams", "William Howard Taft", "Grover Cleveland"],
  correct: 2
}];

Answer 1

我想到要做到这一点，我需要将变量放在包含Handlebars编译器的函数中，即var quizNum = num;

HTML：

<script id="radio-template" type="x-handlebars-template">
        {{#each this}}
            <input name={{answerSet}} type='radio' value={{@index}} >{{this}}<br>
        {{/each}}
</script>

JS：

function createRadios() {
        var quizNum = num;
        var radioScript = $("#radio-template").html();
        var template = Handlebars.compile(radioScript);
        Handlebars.registerHelper('answerSet', function () {
            return "quiz" + quizNum;
        });

        question.append(template(allQuestions[counter].choices));
    };

如何使用Handlebars将输入名称属性设置为等于变量？

1 个答案: