[英]Define JavaScript object literal so that the properties exists for all objects in an array?
I define a JavaScript object literal with defaults so that my template can access them later: 我使用默认值定义JavaScript对象文字,以便我的模板可以在以后访问它们:
self.emails = [{
address: "",
validation: {
warning: false,
message: "",
}
}];
This works for self.emails[0]
but I also need the properties to exist for self.emails[1]
to self.emails[4]
. 这适用于
self.emails[0]
但我还需要self.emails[1]
到self.emails[4]
存在的属性。 Is there a better way to accomplish this than to type: 是否有更好的方法来完成此操作而不是键入:
self.emails = [{
address: "",
validation: {
warning: false,
message: "",
}
},
address: "",
validation: {
warning: false,
message: "",
}
},
address: "",
validation: {
warning: false,
message: "",
}
},
address: "",
validation: {
warning: false,
message: "",
}
},
address: "",
validation: {
warning: false,
message: "",
}
}];
Use a simple for loop: 使用简单的for循环:
self.emails = []
for (let i = 0; i < 5; i++) {
self.emails.push({
address: "",
validation: {
warning: false,
message: "",
}
})
}
I would do this job as follows; 我会按照以下方式完成这项工作;
var selfEmails = [{ address: "", validation: { warning: false, message: "", } }], longSelfEmails = Array(...Array(5)).map(o => { o = Object.assign({},(selfEmails[0])); o.validation = Object.assign({},o.validation); return o; }), modified = longSelfEmails.map((o,i) => {o.validation.message = i; o.address = "addr_0"+i; return o; }); console.log(modified);
Now they are all an individual object. 现在他们都是一个单独的对象。
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