[英]Trying to show/hide and element based on what option is selected in a dropdown box
[英]jQuery: show/hide element based on selected option
我想在選擇value='Attached File'
的選項時顯示id=attach
元素。 請幫助我理解為什么我的代碼不起作用。
我的代碼:
<ul class="form-list">
<li id="excellence-form">
<fieldset>
<ul>
<li class="wide">
<label for="excellence:like" class="required"><em>*</em><?php echo $this->__('Initial Data') ?></label>
<div class="input-box">
<select class="required-entry" name="excellence[like]" id="excellence:like">
<option value='0'><?php echo $this->__('Please Choose..');?></option>
<option value='Not Attached' <?php if($this->getQuote()->getExcellenceLike() == 1){echo 'selected="selected"';} ?>><?php echo $this->__('Do Not Attach File');?></option>
<option value='Attached File' <?php if($this->getQuote()->getExcellenceLike() == 2){echo 'selected="selected"';} ?>><?php echo $this->__('Attach File');?></option>
</select>
</div>
</li>
<li id="attach" style="display:none;" >
<label class="required"><em>*</em><?php echo $this->__('Please Attach :') ?><span id='file_upload_text'></span></label>
<div class="input-box">
<input id="file_upload" type="file" name="file_upload" />
</div>
<input id="file_upload_path" type="hidden" name="file_upload_path" class='required-entry' />
<input type="hidden" value='Attached File' name="file_upload_type" class='required-entry' />
</li>
</ul>
</fieldset>
</li>
</ul>
我的jQuery:
<script type="text/javascript">
$(function() {
$('#excellence:like').change(function(){
if ($(this).val() == "Attached File") {
document.getElementById("attach").style.display="block";
} else {
document.getElementById("attach").style.display="none";
}
});
});
</script>
你應該避免使用“:”,因為它是css選擇器的一部分
試試這個...
$(function() {
$('.required-entry').change(function(){ // use class or use $('select')
if ($(this).val() == "Attached File") {
$("#attach").show();
} else {
$("#attach").hide();
}
});
});
您必須在您的ID中轉義:
或select[id='excellence:like']
):
$('#excellence\\:like').change(function(){
if ($(this).val() == "Attached File") {
document.getElementById("attach").style.display="block";
//jQuery alternative
//$("#attach").show();
} else {
document.getElementById("attach").style.display="none";
//jQuery alternative
//$("#attach").hide();
}
});
試試這個
$(function() {
$('#excellence\\:like').change(function(){
if ($(this).val() == "Attached File") {
$("#attach").show();
} else {
$("#attach").hide();
}
});
});
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