javascript - 在 JavaScript 中打印正确的变量名
问题描述
我正在尝试使用具有以下代码的函数在 JavaScript 中记录变量名称及其值...
var x = 5;
function get(v) {
console.log(Object.keys({v})[0] + " = " + v);
}
get(x); // It should log "x = 5"
但相反,它会记录v = 5
.
有没有办法存储变量名并正确记录变量名?
解决方案
发生这种情况是因为在您打印时,您正在构建一个具有名为“v”的键的对象......就是{v}
这样。
x
您可以通过在您有权访问变量 时创建对象来解决此问题,并执行以下操作{x}
:
var x = 5;
function get(v) {
console.log(Object.entries(v)[0].join(" = "));
}
get({x});
推荐阅读
- javascript - How to wait for a mongoose .exec() callback to finish executing before testing for express response object?
- sql - Maximum difference between MORE than two dates in SQL?
- javascript - Removing class when iOS keyboard is open (HTML/JS/CSS)
- binary - Binary 12 is 1100 but signed 4 is also 1100. Can someone please explain how this works?
- resize - how openstack resize instance with raw format's local disk
- rust - Cargo doc 不会为既是库又是二进制的项目中的私有项目生成文档
- ios - Specified custom URL scheme is (null) but Info.plist do not contain such scheme in CFBundleURLTypes key
- python - With Python, save google.cloud.bigquery.job.query.QueryJob output to local JSON file
- reactjs - Making an a tag active in nextjs on changing link
- javascript - Can you call Html input value with the Id Instead of getElementById