Question

在php中，您可以轻松打印关联数组的键值对，如下所示：

<?php

$array = [
    "id" => "10",
    "name" => "Hans",
    "age" => 20
];


foreach($array as $key => $value) {
    echo "$key \t $value \n";
}

输出：

id       10 
name     Hans
age      20

PHP online test

这如何与JavaScript一起使用？

注意：这是一个自我回答的问题（share your knowledge, Q&A-style）

Answer 1

这是javascript的工作原理。

＆＃13;

    var myObject = {
      name: "hans",
      id: 10,
      age: 20
    }
    
    var output = "";
    for (var key in myObject) {
    	output += key + " = " + myObject[key] + "<br>";
    }
    
    document.getElementById("out").innerHTML = output;

＆＃13;

<p id="out"></p>

＆＃13;

<强>输出：

name = hans
id = 10
age = 20

JSfiddle

多个对象的输出数组：

＆＃13;

var person1 = {firstName:"John", lastName:"Doe", age:46};
var person2 = {firstName:"Hans", lastName:"Oettinger", age:42};

var persons = new Array();

persons.push(person1);
persons.push(person2);

outputArray(persons);

function outputArray(pArray)
{
  var output = "";

  for(var i in pArray) {
    output += "<ul>";
      for (var key in pArray[i]) {
        output += "<li>" + key + ": " + pArray[i][key] + "</li>";
      }
        output += "</ul>";
    }
  
  $("#output").html(output);
}

＆＃13;

li {
  list-style-type: none;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p id="output"></p>

＆＃13;

JSfiddle

Q＆amp; A - 打印对象的键值对

1 个答案:

多个对象的输出数组：