当用户选择一个选项时打开另一个输入文本
Open Another Input Text when the user selects an option
我是新手,我有这个项目,如果列出的选项不在下拉列表中,用户应该可以选择自定义输入。
HTML
<div class="form-group">
<label class="col-sm-2 col-form-label">Select Page Size</label>
<select name = 'pageSelector' class="col-sm-3">
<option value ="">Select Page Size</option>
<option value ="84.1|118.9">A0</option>
<option value = "59.4|84.1">A1</option>
<option value = "7.4|10.5">A7</option>
<option value = "custom">Select Custom</option>
</select>
</div>
PHP
if(isset($_POST["pageSelector"]))
{
$result = $_POST['pageSelector'];
if($result == "")
{
echo "<script>alert('Please select the Page')</script>";
}
$result_explode = explode('|', $result);
$width_page = $result_explode[0];
$height_page = $result_explode[1];
// Converting the string variables to integer
$width_plate=(double)$width_plate;
$height_plate=(double)$height_plate;
$width_page=(double)$width_page;
$height_page=(double)$height_page;
// To calculate the number of pages that can be print with one selected plate
$calculated_width = $width_plate/$width_page;
$calculated_height = $height_plate/$height_page;
$print_include = (int)$calculated_height*(int)$calculated_width;
echo "<div class='h1'>Number of Prints in one plate ".$print_include." prints</div> ";
}
我希望如果用户选择自定义选项,那么输入文本应该出现在屏幕上。
如果用户选择了自定义选项,那么您可以给他一个输入。
let selectEl = document.getElementById('select-list');
selectEl.addEventListener('change', (e) => {
if (e.target.value == 'custom') {
document.getElementById('txt-custom').style.display = 'block';
} else {
document.getElementById('txt-custom').style.display = 'none';
}
});
#txt-custom {
display: none;
}
<select id="select-list">
<option value="">Select an option</option>
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="custom">Custom</option>
</select>
<input type="text" id="txt-custom" name="custom-value" />
var pageSelector = document.getElementById('pageSelector');
var customInput = document.getElementById('customInput');
pageSelector.addEventListener('change', function(){
if(this.value == "custom") {
customInput.classList.remove('hide');
} else {
customInput.classList.add('hide');
}
})
.hide {
width: 0;
height: 0;
opacity: 0;
}
<div class="form-group">
<label class="col-sm-2 col-form-label">Select Page Size</label>
<select name = 'pageSelector' class="col-sm-3 page" id="pageSelector">
<option value ="">Select Page Size</option>
<option value ="84.1|118.9">A0</option>
<option value = "59.4|84.1">A1</option>
<option value = "7.4|10.5">A7</option>
<option value = "custom">Select Custom</option>
</select>
<input type="text" class="hide" placeholder="Custom Selector" name="custom" id="customInput">
</div>
演示代码:
首先你应该输入 style="display:none"
和 jQuery
jQuery(document).ready(function() {
jQuery("#selectId").change(function() {
if (jQuery(this).val() === 'custom'){
jQuery('input[name=other_input]').show();
} else {
jQuery('input[name=other_input]').hide();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<select name = 'pageSelector' class="col-sm-3" id="selectId" >
<option value ="">Select Page Size</option>
<option value ="84.1|118.9">A0</option>
<option value = "59.4|84.1">A1</option>
<option value = "7.4|10.5">A7</option>
<option value = "custom">Select Custom</option>
</select>
<br><br><br>
<input type="text" name="other_input" style="display:none" />
Angular Version
Angular CLI:13.0.3
节点:16.15.0
包管理器:npm 8.5.5
在 .html 文件中
**<div class="col-md-6">
<label class="form-label">Attendence Type</label>
<select (change)="type($event)" class="form-select" aria-label="Default select example" >
<option selected value="P">Present</option>
<option value="A">Absent</option>
<option value="PL">Paid Leave</option>
<option value="UL">Unpaid Leave</option>
</select>
</div>**
I want to Show this input after select paid leave
**<div *ngIf="plFlag" class="col-md-6">
<label class="form-label">Leave Type</label>
<select class="form-select" aria-label="Default select example">
<option selected disabled>Leave Type</option>
<option value="CL">Causel Leave</option>
<option value="SL">Seek Leave</option>
</select>
</div>**
and in .ts File
**type(event: any) {
console.log(event.target.value);
if (event.target.value == "PL") {
this.plFlag = true;
}
else {
this.plFlag = false;
}
}**
我是新手,我有这个项目,如果列出的选项不在下拉列表中,用户应该可以选择自定义输入。
HTML
<div class="form-group">
<label class="col-sm-2 col-form-label">Select Page Size</label>
<select name = 'pageSelector' class="col-sm-3">
<option value ="">Select Page Size</option>
<option value ="84.1|118.9">A0</option>
<option value = "59.4|84.1">A1</option>
<option value = "7.4|10.5">A7</option>
<option value = "custom">Select Custom</option>
</select>
</div>
PHP
if(isset($_POST["pageSelector"]))
{
$result = $_POST['pageSelector'];
if($result == "")
{
echo "<script>alert('Please select the Page')</script>";
}
$result_explode = explode('|', $result);
$width_page = $result_explode[0];
$height_page = $result_explode[1];
// Converting the string variables to integer
$width_plate=(double)$width_plate;
$height_plate=(double)$height_plate;
$width_page=(double)$width_page;
$height_page=(double)$height_page;
// To calculate the number of pages that can be print with one selected plate
$calculated_width = $width_plate/$width_page;
$calculated_height = $height_plate/$height_page;
$print_include = (int)$calculated_height*(int)$calculated_width;
echo "<div class='h1'>Number of Prints in one plate ".$print_include." prints</div> ";
}
我希望如果用户选择自定义选项,那么输入文本应该出现在屏幕上。
如果用户选择了自定义选项,那么您可以给他一个输入。
let selectEl = document.getElementById('select-list');
selectEl.addEventListener('change', (e) => {
if (e.target.value == 'custom') {
document.getElementById('txt-custom').style.display = 'block';
} else {
document.getElementById('txt-custom').style.display = 'none';
}
});
#txt-custom {
display: none;
}
<select id="select-list">
<option value="">Select an option</option>
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="custom">Custom</option>
</select>
<input type="text" id="txt-custom" name="custom-value" />
var pageSelector = document.getElementById('pageSelector');
var customInput = document.getElementById('customInput');
pageSelector.addEventListener('change', function(){
if(this.value == "custom") {
customInput.classList.remove('hide');
} else {
customInput.classList.add('hide');
}
})
.hide {
width: 0;
height: 0;
opacity: 0;
}
<div class="form-group">
<label class="col-sm-2 col-form-label">Select Page Size</label>
<select name = 'pageSelector' class="col-sm-3 page" id="pageSelector">
<option value ="">Select Page Size</option>
<option value ="84.1|118.9">A0</option>
<option value = "59.4|84.1">A1</option>
<option value = "7.4|10.5">A7</option>
<option value = "custom">Select Custom</option>
</select>
<input type="text" class="hide" placeholder="Custom Selector" name="custom" id="customInput">
</div>
演示代码:
首先你应该输入 style="display:none"
和 jQuery
jQuery(document).ready(function() {
jQuery("#selectId").change(function() {
if (jQuery(this).val() === 'custom'){
jQuery('input[name=other_input]').show();
} else {
jQuery('input[name=other_input]').hide();
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<select name = 'pageSelector' class="col-sm-3" id="selectId" >
<option value ="">Select Page Size</option>
<option value ="84.1|118.9">A0</option>
<option value = "59.4|84.1">A1</option>
<option value = "7.4|10.5">A7</option>
<option value = "custom">Select Custom</option>
</select>
<br><br><br>
<input type="text" name="other_input" style="display:none" />
Angular Version
Angular CLI:13.0.3 节点:16.15.0 包管理器:npm 8.5.5
在 .html 文件中
**<div class="col-md-6">
<label class="form-label">Attendence Type</label>
<select (change)="type($event)" class="form-select" aria-label="Default select example" >
<option selected value="P">Present</option>
<option value="A">Absent</option>
<option value="PL">Paid Leave</option>
<option value="UL">Unpaid Leave</option>
</select>
</div>**
I want to Show this input after select paid leave
**<div *ngIf="plFlag" class="col-md-6">
<label class="form-label">Leave Type</label>
<select class="form-select" aria-label="Default select example">
<option selected disabled>Leave Type</option>
<option value="CL">Causel Leave</option>
<option value="SL">Seek Leave</option>
</select>
</div>**
and in .ts File
**type(event: any) {
console.log(event.target.value);
if (event.target.value == "PL") {
this.plFlag = true;
}
else {
this.plFlag = false;
}
}**