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javascript - 在选项卡中显示 javascript 对象

问题描述

我在下面有这段代码，它是一个 HTML 页面，由一个选项卡组成，我想使用我的 JavaScript 多维数组并获取每个选项卡并分别first name填充age是否<h3>有任何简单的方法来完成此操作，任何建议将不胜感激！

function openCity(evt, cityName) {
    var i, tabcontent, tablinks;
    tabcontent = document.getElementsByClassName("tabcontent");
    for (i = 0; i < tabcontent.length; i++) {
        tabcontent[i].style.display = "none";
    }
    tablinks = document.getElementsByClassName("tablinks");
    for (i = 0; i < tablinks.length; i++) {
        tablinks[i].className = tablinks[i].className.replace(" active", "");
    }
    document.getElementById(cityName).style.display = "block";
    evt.currentTarget.className += " active";
}

// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();

var personArr = [];
var person = {firstName:"John", lastName:"Doe", age:21};
var person2 = {firstName:"Paul", lastName:"Logan", age:22};
var person3 = {firstName:"Sean", lastName:"Kim", age:32};
var person4 = {firstName:"Ken", lastName:"Chow", age:12};

personArr.push(person, person2, person3, person4);
console.log(personArr);
body {font-family: Arial;}

/* Style the tab */
.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
}

/* Style the buttons inside the tab */
.tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
}

/* Change background color of buttons on hover */
.tab button:hover {
    background-color: #ddd;
}

/* Create an active/current tablink class */
.tab button.active {
    background-color: #ccc;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-top: none;
}
.line1{
display:inline-block;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>

<div class="tab">
  <button class="tablinks" onclick="openCity(event, 'People')" id="defaultOpen">People</button>
</div>

<div id="People" class="tabcontent">
<div class="line1">
<h3>Name 1 :</h3>   
<h3>Age 1 :</h3>

<h3>Name 2 :</h3>   
<h3>Age 2 :</h3>

<h3>Name 3 :</h3>   
<h3>Age 3 :</h3>

<h3>Name 4 :</h3>   
<h3>Age 4 :</h3>
 </div>
 </div>



</body>
</html>

标签： javascripthtmlcss

解决方案

无需移动 HTML，但您可以使用一些类和/或 id 来使 JS 更具可读性。

首先你需要得到所有的h3。这可以通过使用类定位父 divline1并获取所有子级来完成。

var parent = document.getElementsByClassName('line1')[0].children;

然后你可以循环这个数组和你的对象数组来填充所有的innerHTML。在这里小心，您正在添加到 innerHTML 而不是更改它。

这个 llop 可以通过很多方式完成，我通过循环每 2 个h3标签并保留要添加的人的标志来采用一个简单的方法

   var personFlag = 0;
    for(var i = 0; i < parent.length; i=i+2){
      parent[i].innerHTML += personArr[personFlag].firstName +' '+personArr[personFlag].lastName;
      parent[i+1].innerHTML += personArr[personFlag].age;
      personFlag++
    }

希望这会有所帮助：>

function openCity(evt, cityName) {
    var i, tabcontent, tablinks;
    tabcontent = document.getElementsByClassName("tabcontent");
    for (i = 0; i < tabcontent.length; i++) {
        tabcontent[i].style.display = "none";
    }
    tablinks = document.getElementsByClassName("tablinks");
    for (i = 0; i < tablinks.length; i++) {
        tablinks[i].className = tablinks[i].className.replace(" active", "");
    }
    document.getElementById(cityName).style.display = "block";
    evt.currentTarget.className += " active";
}

// Get the element with id="defaultOpen" and click on it
document.getElementById("defaultOpen").click();

var personArr = [];
var person = {firstName:"John", lastName:"Doe", age:21};
var person2 = {firstName:"Paul", lastName:"Logan", age:22};
var person3 = {firstName:"Sean", lastName:"Kim", age:32};
var person4 = {firstName:"Ken", lastName:"Chow", age:12};

personArr.push(person, person2, person3, person4);
console.log(personArr);

var parent = document.getElementsByClassName('line1')[0].children;
console.log(parent);
var personFlag = 0;
for(var i = 0; i < parent.length; i=i+2){
  parent[i].innerHTML += personArr[personFlag].firstName +' '+personArr[personFlag].lastName;
  parent[i+1].innerHTML += personArr[personFlag].age;
  personFlag++
}
body {font-family: Arial;}

/* Style the tab */
.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
}

/* Style the buttons inside the tab */
.tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 17px;
}

/* Change background color of buttons on hover */
.tab button:hover {
    background-color: #ddd;
}

/* Create an active/current tablink class */
.tab button.active {
    background-color: #ccc;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-top: none;
}
.line1{
display:inline-block;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>

<div class="tab">
  <button class="tablinks" onclick="openCity(event, 'People')" id="defaultOpen">People</button>
</div>

<div id="People" class="tabcontent">
<div class="line1">
<h3>Name 1 :</h3>   
<h3>Age 1 :</h3>

<h3>Name 2 :</h3>   
<h3>Age 2 :</h3>

<h3>Name 3 :</h3>   
<h3>Age 3 :</h3>

<h3>Name 4 :</h3>   
<h3>Age 4 :</h3>
 </div>
 </div>



</body>
</html>

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