[英]How can I show a hidden div when a select option is selected?
我想使用純 JavaScript。 我有一個下拉列表(
<select><\/code>有許多
<option><\/code> s)。
選擇某個選項時,我希望隱藏的div顯示。
<select id="test" name="form_select">
<option value="0">No</option>
<option value ="1" onClick"showDiv()">Yes</option>
</select>
<div id="hidden_div" style="display: none;">Hello hidden content</div>
試試這個:
function showDiv(divId, element) { document.getElementById(divId).style.display = element.value == 1 ? 'block' : 'none'; }
#hidden_div { display: none; }
<select id="test" name="form_select" onchange="showDiv('hidden_div', this)"> <option value="0">No</option> <option value="1">Yes</option> </select> <div id="hidden_div">This is a hidden div</div>
嘗試處理select
的 change 事件並使用this.value
來確定它是否為“是”。
JS
document.getElementById('test').addEventListener('change', function () {
var style = this.value == 1 ? 'block' : 'none';
document.getElementById('hidden_div').style.display = style;
});
HTML
<select id="test" name="form_select">
<option value="0">No</option>
<option value ="1">Yes</option>
</select>
<div id="hidden_div" style="display: none;">Hello hidden content</div>
我認為這是一個合適的解決方案:
<select id="test" name="form_select" onchange="showDiv(this)"> <option value="0">No</option> <option value="1">Yes</option> </select> <div id="hidden_div" style="display:none;">Hello hidden content</div> <script type="text/javascript"> function showDiv(select){ if(select.value==1){ document.getElementById('hidden_div').style.display = "block"; } else{ document.getElementById('hidden_div').style.display = "none"; } } </script>
您應該掛鈎<select>
元素的更改事件,而不是單個選項。
var select = document.getElementById('test'),
onChange = function(event) {
var shown = this.options[this.selectedIndex].value == 1;
document.getElementById('hidden_div').style.display = shown ? 'block' : 'none';
};
// attach event handler
if (window.addEventListener) {
select.addEventListener('change', onChange, false);
} else {
// of course, IE < 9 needs special treatment
select.attachEvent('onchange', function() {
onChange.apply(select, arguments);
});
}
更通用,從調用元素傳遞值(更容易維護)。
function showHideEle(selectSrc, targetEleId, triggerValue) { if(selectSrc.value==triggerValue) { document.getElementById(targetEleId).style.display = "inline-block"; } else { document.getElementById(targetEleId).style.display = "none"; } }
<select id="Title" onchange="showHideEle(this, 'TitleOther', 'Other')"> <option value="">-- Choose</option> <option value="Mr">Mr</option> <option value="Mrs">Mrs</option> <option value="Miss">Miss</option> <option value="Other">Other --></option> </select> <input id="TitleOther" type="text" title="Title other" placeholder="Other title" style="display:none;"/>
檢查此代碼。 使用選擇項隱藏 div 的代碼很棒。
HTML
<select name="name" id="cboOptions" onchange="showDiv('div',this)" class="form-control" >
<option value="1">YES</option>
<option value="2">NO</option>
</select>
<div id="div1" style="display:block;">
<input type="text" id="customerName" class="form-control" placeholder="Type Customer Name...">
<input type="text" style="margin-top: 3px;" id="customerAddress" class="form-control" placeholder="Type Customer Address...">
<input type="text" style="margin-top: 3px;" id="customerMobile" class="form-control" placeholder="Type Customer Mobile...">
</div>
<div id="div2" style="display:none;">
<input type="text" list="cars" id="customerID" class="form-control" placeholder="Type Customer Name...">
<datalist id="cars">
<option>Value 1</option>
<option>Value 2</option>
<option>Value 3</option>
<option>Value 4</option>
</datalist>
</div>
JS
<script>
function showDiv(prefix,chooser)
{
for(var i=0;i<chooser.options.length;i++)
{
var div = document.getElementById(prefix+chooser.options[i].value);
div.style.display = 'none';
}
var selectedOption = (chooser.options[chooser.selectedIndex].value);
if(selectedOption == "1")
{
displayDiv(prefix,"1");
}
if(selectedOption == "2")
{
displayDiv(prefix,"2");
}
}
function displayDiv(prefix,suffix)
{
var div = document.getElementById(prefix+suffix);
div.style.display = 'block';
}
</script>
<select id="test" name="form_select" onchange="showDiv()">
<option value="0">No</option>
<option value ="1">Yes</option>
</select>
<div id="hidden_div" style="display: none;">Hello hidden content</div>
<script>
function showDiv(){
getSelectValue = document.getElementById("test").value;
if(getSelectValue == "1"){
document.getElementById("hidden_div").style.display="block";
}else{
document.getElementById("hidden_div").style.display="none";
}
}
</script>
您可以使用以下常用功能。
<div>
<select class="form-control"
name="Extension for area validity sought for"
onchange="CommonShowHide('txtc1opt2', this, 'States')"
>
<option value="All India">All India</option>
<option value="States">States</option>
</select>
<input type="text"
id="txtc1opt2"
style="display:none;"
name="Extension for area validity sought for details"
class="form-control"
value=""
placeholder="">
</div>
<script>
function CommonShowHide(ElementId, element, value) {
document
.getElementById(ElementId)
.style
.display = element.value == value ? 'block' : 'none';
}
</script>
function showDiv(divId, element) { document.getElementById(divId).style.display = element.value == 1 ? 'block' : 'none'; }<\/code><\/pre> #hidden_div { display: none; }<\/code><\/pre> <select id="test" name="form_select" onchange="showDiv('hidden_div', this)"> <option value="0">No<\/option> <option value="1">Yes<\/option> <\/select> <div id="hidden_div">This is a hidden div
<\/code><\/pre>
"
看看我的解決方案
我想讓visaCard-note
div僅在選擇的cardType
是visa
時才可見
這是html
<select name="cardType">
<option value="1">visa</option>
<option value="2">mastercard</option>
</select>
這是js
var visa="1";//visa is selected by default
$("select[name=cardType]").change(function () {
document.getElementById('visaCard-note').style.visibility = this.value==visa ? 'visible' : 'hidden';
})
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