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功能新增: - OSS 存储使用情况显示（文件页面） - OSS 当日流量统计（阿里云云监控API） - 分享页面路由修复（/s/xxx 格式支持） Bug修复: - 修复分享页面资源路径（相对路径改绝对路径） - 修复分享码获取逻辑（支持路径格式） - 修复OSS配额undefined显示问题 - 修复登录流程OSS配置检查 - 修复文件数为null时的显示问题 依赖更新: - 添加 @alicloud/cms20190101 云监控SDK - 添加 @alicloud/openapi-client Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
1.4 KiB
1.4 KiB
undefsafe
Simple function for retrieving deep object properties without getting "Cannot read property 'X' of undefined"
Can also be used to safely set deep values.
Usage
var object = {
a: {
b: {
c: 1,
d: [1,2,3],
e: 'remy'
}
}
};
console.log(undefsafe(object, 'a.b.e')); // "remy"
console.log(undefsafe(object, 'a.b.not.found')); // undefined
Demo: https://jsbin.com/eroqame/3/edit?js,console
Setting
var object = {
a: {
b: [1,2,3]
}
};
// modified object
var res = undefsafe(object, 'a.b.0', 10);
console.log(object); // { a: { b: [10, 2, 3] } }
console.log(res); // 1 - previous value
Star rules in paths
As of 1.2.0, undefsafe supports a * in the path if you want to search all of the properties (or array elements) for a particular element.
The function will only return a single result, either the 3rd argument validation value, or the first positive match. For example, the following github data:
const githubData = {
commits: [{
modified: [
"one",
"two"
]
}, /* ... */ ]
};
// first modified file found in the first commit
console.log(undefsafe(githubData, 'commits.*.modified.0'));
// returns `two` or undefined if not found
console.log(undefsafe(githubData, 'commits.*.modified.*', 'two'));