Javascript 如何强制将变量定义与否的检查转换为读取True或False的字符串？

我的控制台日志设置如下：

console.log("getTestStatusActions" + this.userTestStatusActions === undefined);

这会将单个单词“False”作为输出

我如何使此输出为：

"getTestStatusActions: userTestStatusActions defined"

或

三元

console.log("getTestStatusActions" + (this.userTestStatusActions === undefined ? "undefined" : "defined"));

或者，为了可读性：

var status = this.userTestStatusActions === undefined ? "undefined" : "defined";
console.log("getTestStatusActions: userTestStatusActions " + status);

三元

console.log("getTestStatusActions" + (this.userTestStatusActions === undefined ? "undefined" : "defined"));

或者，为了可读性：

var status = this.userTestStatusActions === undefined ? "undefined" : "defined";
console.log("getTestStatusActions: userTestStatusActions " + status);

三元

console.log("getTestStatusActions" + (this.userTestStatusActions === undefined ? "undefined" : "defined"));

或者，为了可读性：

var status = this.userTestStatusActions === undefined ? "undefined" : "defined";
console.log("getTestStatusActions: userTestStatusActions " + status);

三元

console.log("getTestStatusActions" + (this.userTestStatusActions === undefined ? "undefined" : "defined"));

或者，为了可读性：

var status = this.userTestStatusActions === undefined ? "undefined" : "defined";
console.log("getTestStatusActions: userTestStatusActions " + status);