有一种方法来获得一个变量名作为字符串在Javascript?(类似于Cocoa中的NSStringFromSelector)
我想这样做:
var myFirstName = 'John';
alert(variablesName(myFirstName) + ":" + myFirstName);
--> myFirstName:John
更新
我正在尝试使用JavaScript连接浏览器和另一个程序。我想从浏览器发送实例名到另一个程序回调方法:
FooClass = function(){};
FooClass.someMethod = function(json) {
// Do something
}
instanceA = new FooClass();
instanceB = new FooClass();
doSomethingInAnotherProcess(instanceB); // result will be substituted by using instanceB.someMethod();
...
从另一个程序:
evaluateJavascriptInBrowser("(instanceName).someMethod("resultA");");
在PHP中:
如何在PHP中获得变量名作为字符串?
我根据JSON创建了这个函数，就像有人建议的那样，它可以很好地满足我的调试需求
function debugVar(varNames){
let strX = "";
function replacer(key, value){
if (value === undefined){return "undef"}
return value
}
for (let arg of arguments){
let lastChar;
if (typeof arg!== "string"){
let _arg = JSON.stringify(arg, replacer);
_arg = _arg.replace('{',"");
_arg = _arg.replace('}',"");
_arg = _arg.replace(/:/g,"=");
_arg = _arg.replace(/"/g,"");
strX+=_arg;
}else{
strX+=arg;
lastChar = arg[arg.length-1];
}
if (arg!==arguments[arguments.length-1]&&lastChar!==":"){strX+=" "};
}
console.log(strX)
}
let a = 42, b = 3, c;
debugVar("Begin:",{a,b,c},"end")
