Question

我正在寻找一个使用变量

在循环中返回值的快速解决方案

有基本代码

var origins = [
    {level: '1', hp: 5600},
    {level: '2', hp: 7600},
    {level: '3', hp: 9600}
];

var text1 = "";
var text2 = "";

for (var key in origins) {
       if (origins.hasOwnProperty(key)) {
         text1 = origins[key].level;
         text2 = origins[key].hp;
       }
    }

我正在尝试调用循环变量

console.log(text1 + " " + text2)

它给了我一个我不想要的输出：

3 9600

我看起来输出的例外结果是这样的：

1 5600
2 7600
3 9600

编辑：有JSfiddle

http://jsfiddle.net/mttweck6/2/

Answer 1

您需要将console.log放在循环中或添加到一个文本变量，如final。见下文

var origins = [
{level: '1', hp: 5600},
{level: '2', hp: 7600},
{level: '3', hp: 9600}
];

var text1 = "";
var text2 = "";
var final = "";

for (var key in origins) {
    if (origins.hasOwnProperty(key)) {
        text1 = origins[key].level;
        text2 = origins[key].hp;
        final += "Level: " + text1 + '\n' + "HP: " + text2 + '\n';
    }
}





//I need to get external variable that would exeute in loop
alert(final);



//Excepted Result as one alert with output:
//Level 1: 5600
//Level 2: 7600
//Level 3: 9600

Answer 2

我认为这可能会对您有所帮助：

var origins = [
{level: '1', hp: 5600},
{level: '2', hp: 7600},
{level: '3', hp: 9600}
];

var text1 = "";
var text2 = "";
var s= "";

for (var key in origins) {
   if (origins.hasOwnProperty(key)) {
      text1 = origins[key].level;
      text2 = origins[key].hp;
      s += '\n' + "Level " + text1 + ": " + text2;
   }
}

然后再做 alert(s);

Answer 3

var origins = [
    {level: '1', hp: 5600},
    {level: '2', hp: 7600},
    {level: '3', hp: 9600}
];

var text1 = "";
var text2 = "";

for (var key in origins) {
   if (origins.hasOwnProperty(key)) {
     text1 = origins[key].level;
     text2 = origins[key].hp;
     console.log(text1 + " " + text2);
   }
}

编辑：如果您想将结果保存为整个字符串

var origins = [
    {level: '1', hp: 5600},
    {level: '2', hp: 7600},
    {level: '3', hp: 9600}
];

var text1 = "";
var text2 = "";
var result = ""; // String to print

for (var key in origins) {
   if (origins.hasOwnProperty(key)) {
     text1 = origins[key].level;
     text2 = origins[key].hp;
     result += text1 + " " + text2 + "\n";
   }
}

alert(result);

如果您希望各自以HTML格式显示此内容，只需将result += text1 + " " + text2 + "\n";替换为result += text1 + " " + text2 + "<br>";，将alert(result);替换为document.getElementById("myelem").innerHTML = result;

使用Javascript返回循环变量的值

3 个答案: