javascript Handlebars.js - 使用可变键访问对象值
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时间：2020-10-27 16:19:48 来源:igfitidea点击:
Handlebars.js - Access object value with a variable key
提问by Kevin Wang
Looking for a way to access to achieve this:
寻找一种访问方式来实现这一目标：
{{#each someArray}}
{{../otherObject.[this]}}
{{/each}}
How do I evaluate the value of thisand then reference it as a key to my object otherObject?
如何评估 的值，this然后将其作为对象的键进行引用otherObject？
回答by Mario Negrete
With lookup: http://handlebarsjs.com/builtin_helpers.html#lookup
通过查找：http: //handlebarsjs.com/builtin_helpers.html#lookup
{{#each someArray}}
{{lookup ../otherObject this}}
{{/each}}
回答by Fabricio c Zuardi
One possible solution with a helper:
使用助手的一种可能解决方案：
/*
{{#each someArrayOfKeys}}
{{#withItem ../otherObject key=this}}
{{this}}
{{/withItem}}
{{/each}}
*/
Handlebars.registerHelper('withItem', function(object, options) {
return options.fn(object[options.hash.key]);
});
