您好,我想问一下在单击“添加行”按钮后如何添加新行。我找到了一些Javascript代码,并尝试对其进行编辑,但是它不起作用。预先谢谢您:)这是我一直在使用的代码。既然我还没有找到,请告诉我该怎么做或与我分享有关此事的任何消息。 Stackoverflow中也有一些类似的问题,但那里没有答案。
html代码:
<h1 class="h3 mb-4 text-gray-800">Requirement Validation Principles</h1>
<div class="jumbotron jumbotron-fluid">
<div class="container">
<form>
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName1"></label>
<input type="Name" class="form-control" id="inputName1" placeholder="Name">
</div>
<div class="form-group col">
<label for="inputPassword1"></label>
<input type="name" class="form-control" id="inputPassword1" placeholder="Position">
</div>
</div>
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName2"></label>
<input type="Name" class="form-control" id="inputName2" placeholder="Name">
</div>
<div class="form-group col">
<label for="inputPassword2"></label>
<input type="name" class="form-control" id="inputPassword2" placeholder="Position">
</div>
</div>
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName3"></label>
<input type="Name" class="form-control" id="inputName3" placeholder="Name">
</div>
<div class="form-group col">
<label for="inputPassword3"></label>
<input type="name" class="form-control" id="inputPassword3" placeholder="Position">
</div>
</div>
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName4"></label>
<input type="Name" class="form-control" id="inputName4" placeholder="Name">
</div>
<div class="form-group col">
<label for="inputPassword4"></label>
<input type="name" class="form-control" id="inputPassword4" placeholder="Position">
</div>
</div>
</div>
<button id="btn">Add row</button>
javascript代码:
var count=1;
$("#btn").click(function(){
$("#container").append(addNewRow(count));
count++;
});
function addNewRow(count){
var newrow='<div class="row">'+
'<div class="col-md-4">'+
'<div class="form-group label-floating">'+
'<label class="control-label">Name '+count+'</label>'+
'<input type="text" class="form-control" v-model="act" >'+
'</div>'+
'</div>'+
'<div class="col-md-4">'+
'<div class="form-group label-floating">'+
'<label class="control-label">Position '+count+'</label>'+
'<input type="text" class="form-control" v-model="section">'+
'</div>'+
'</div>'+
'</div>';
return newrow;
}
答案 0 :(得分:0)
结果是有一个名为insertRow()的Javascript方法。
您只需提供表单和ID,然后使用Javascript访问该表单,即可获取该表单的句柄:
var table = document.getElementById("[the ID I gave my form");
之后,在该表变量上使用insertRow()方法并为其指定位置。然后将单元格添加到您刚刚使用insertCell()创建的行中:
var row = table.insertRow(0);
var cell1 = row.insertCell(0);
答案 1 :(得分:0)
除了使用InsertRow()之外,您也可以将按钮放在容器(包含“容器”类的div)外部,然后使用javascript创建元素。
在创建所有元素之后,您可以简单地将其追加以遵循所需的结构。
const button = document.getElementById(#btn);
button.addEventListener('click', addRow);
function addRow(event) {
const container = document.querySelector('.container');
const row = document.createElement('div');
row.classList.add('form-row');
const group = document.createElement('div');
group.classList.add('form-group');
group.classList.add('col-md-7'); // Adjust after need.
const label = document.createElement('label');
label.setAttribute('for', 'myNewInputName');
const input = document.createElement('input');
input.setAttribute('type', 'text');
input.classList.add('form-control');
input.setAttribute('placeholder', 'My new placeholder');
// Assemble our structure.
group.appendChild(label);
group.appendChild(input);
row.appendChild(group);
container.appendChild(row);
}
在此示例中,您可以使用一个沙箱:https://codesandbox.io/s/busy-lovelace-9jw2b?file=/src/index.js。
有用的链接:
答案 2 :(得分:0)
const DomParser = new DOMParser()
, myForm = document.getElementById('my-form')
, bt_Add = document.getElementById('btn-add')
;
function newRow(numRow)
{
let row_N = `
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName${numRow}"></label>
<input type="Name" class="form-control" id="inputName${numRow}" placeholder="Name ${numRow}">
</div>
<div class="form-group col">
<label for="inputPassword${numRow}"></label>
<input type="name" class="form-control" id="inputPassword${numRow}" placeholder="Position ${numRow}">
</div>
</div>`
return (DomParser.parseFromString(row_N, 'text/html')).body.firstChild
}
bt_Add.onclick =()=>
{
let rowCount = myForm.querySelectorAll('div.form-row').length
myForm.appendChild(newRow(++rowCount))
}
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<h1 class="h3 mb-4 text-gray-800">Requirement Validation Principles</h1>
<div class="jumbotron jumbotron-fluid">
<div class="container">
<form action="xx" id="my-form">
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName1"></label>
<input type="Name" class="form-control" id="inputName1" placeholder="Name 1">
</div>
<div class="form-group col">
<label for="inputPassword1"></label>
<input type="name" class="form-control" id="inputPassword1" placeholder="Position 1">
</div>
</div>
</form>
</div>
<button id="btn-add">Add row</button>
<!-- /.container-fluid -->
</div>
有用的链接: appendChild querySeleectorAll
另请参阅:What does ${} (dollar sign and curly braces) mean in a string in Javascript?
答案 3 :(得分:0)
这是完美运行的代码。
<div class="jumbotron jumbotron-fluid" id="dataAdd">
<div class="container">
<div class="form-row">
<div class="form-group col-md-7">
<label for="inputName1"></label>
<input type="Name" class="form-control" id="inputName1" placeholder="Name" v-model="name">
</div>
<div class="form-group col">
<label for="inputPassword4"></label>
<input type="name" class="form-control" id="inputPassword1" placeholder="Position" v-model="position">
</div>
</div>
</div>
<button id="btn">Add row</button>
HTML代码输入从一开始。
$("#btn").click(function(){
var len=$('#dataAdd .container .form-row').length+1;
//if(len>1)
$("#dataAdd .container:last").append(' <div class="form-row">'+
'<div class="form-group col-md-7">'+
' <label for="inputName'+len+'"></label>'+
' <input type="Name" class="form-control" id="inputName'+len+'" placeholder="Name" v-model="name">'+
' </div>'+
' <div class="form-group col">'+
' <label for="inputPassword4"></label>'+
' <input type="name" class="form-control" id="inputPassword'+len+'" placeholder="Position" v-model="position">'+
' </div>'+
'</div>');
});
});
JavaScript代码在最后一个表单控件中添加了HTML。