javascript - HandlebarsJS 未捕获类型错误 : Cannot read property 'url' of undefined

Question

我刚刚开始学习 Handlebars.js，我使用 Handlebars.js 网站 ( http://handlebarsjs.com/expressions.html ) 帮助在此处编写以下代码片段:

http://jsfiddle.net/3TxVx/2/

var story = {
    url: "www.nytimes.com/colonizemars.html",
    text: "We finally colonized mars!"
};

Handlebars.registerHelper('link', function(object) {
    return new Handlebars.SafeString(
        "<a href='" + object.url + "'>" + object.text + "</a>"
    );
});

var theTemplateScript = $("#header").html();
var theTemplate = Handlebars.compile (theTemplateScript);

var temp = theTemplate(story);
console.log(temp);

$(function() {
    $(document.body).append (temp);
});

不确定为什么我在运行时会收到以下错误:

未捕获的类型错误:无法读取未定义的属性“url”

谢谢!

Answer 1

尝试替换

registerHelper('link', function(object)

与

registerHelper('link', function(text, url)

来自文档:

Handlebars.registerHelper('link', function(text, url) {
    text = Handlebars.Utils.escapeExpression(text);
    url = Handlebars.Utils.escapeExpression(url);

    var result = '<a href="' + url + '">' + text + '</a>';

    return new Handlebars.SafeString(result);
});

http://handlebarsjs.com/