如何循环遍历JavaScript对象中的所有成员，包括作为对象的值？
例如，我如何循环（分别访问“your_name”和“your_message”）？
var validation_messages = {
"key_1": {
"your_name": "jimmy",
"your_msg": "hello world"
},
"key_2": {
"your_name": "billy",
"your_msg": "foo equals bar"
}
}
当前回答
在我的情况下（基于前面的内容），任何数量的级别都是可能的。
var myObj = {
rrr: undefined,
pageURL : "BLAH",
emailBox : {model:"emailAddress", selector:"#emailAddress"},
passwordBox: {model:"password" , selector:"#password"},
proba: {odin:{dva:"rr",trr:"tyuuu"}, od:{ff:5,ppa:{ooo:{lll:'lll'}},tyt:'12345'}}
};
function lookdeep(obj,p_Name,gg){
var A=[], tem, wrem=[], dd=gg?wrem:A;
for(var p in obj){
var y1=gg?'':p_Name, y1=y1 + '.' + p;
if(obj.hasOwnProperty(p)){
var tem=obj[p];
if(tem && typeof tem=='object'){
a1=arguments.callee(tem,p_Name,true);
if(a1 && typeof a1=='object'){for(i in a1){dd.push(y1 + a1[i])};}
}
else{
dd.push(y1 + ':' + String(tem));
}
}
};
return dd
};
var s=lookdeep(myObj,'myObj',false);
for (var x=0; x < s.length; ++x) {
console.log(s[x]+'\n');}
结果：
["myObj.rrr:undefined",
"myObj.pageURL:BLAH",
"myObj.emailBox.model:emailAddress",
"myObj.emailBox.selector:#emailAddress",
"myObj.passwordBox.model:password",
"myObj.passwordBox.selector:#password",
"myObj.proba.odin.dva:rr",
"myObj.proba.odin.trr:tyuuu",
"myObj.proba.od.ff:5",
"myObj.proba.od.ppa.ooo.lll:lll",
"myObj.proba.od.tyt:12345"]
其他回答
AgileJon答案的优化和改进版本：
var key, obj, prop, owns = Object.prototype.hasOwnProperty;
for (key in validation_messages ) {
if (owns.call(validation_messages, key)) {
obj = validation_messages[key];
for (prop in obj ) {
// Using obj.hasOwnProperty might cause you headache if there is
// obj.hasOwnProperty = function(){return false;}
// but 'owns' will always work
if (owns.call(obj, prop)) {
console.log(prop, "=", obj[prop]);
}
}
}
}
每个2
（在此处找到）：
var lunch = {
sandwich: 'ham',
age: 48,
};
lunch.forEach2(function (item, key) {
console.log(key);
console.log(item);
});
代码：
if (!Object.prototype.forEach2) {
Object.defineProperty(Object.prototype, 'forEach2', {
value: function (callback, thisArg) {
if (this == null) {
throw new TypeError('Not an object');
}
thisArg = thisArg || window;
for (var key in this) {
if (this.hasOwnProperty(key)) {
callback.call(thisArg, this[key], key, this);
}
}
}
});
}
for(var k in validation_messages) {
var o = validation_messages[k];
do_something_with(o.your_name);
do_something_else_with(o.your_msg);
}
适合我的解决方案如下：
_private.convertParams = function(params){
var params = [];
Object.keys(values).forEach(function(key) {
params.push({"id":key, "option":"Igual", "value":params[key].id})
});
return params;
}
变量obj={name:“SanD”，年龄：“27”}Object.keys（obj）.forEach（（key）=>console.log（key，obj[key]））；
为了循环遍历JavaScript对象，我们可以使用forEach，为了优化代码，可以使用箭头函数。
