[英]Bind value to dropdown list item
我的網頁中有這樣的代碼片段:
timeout = setTimeout(function() {highlight(transfer);}, 1500);
我需要用戶可以使用下拉菜單或復選框將1500的值更改為其他值。 誰能幫助我呢?
嘗試這個
var timeout; //populate as required from dropdown/checkboxes
timeout = setTimeout(function() {highlight(transfer);}, timeout);
的HTML:
<select id="selectInterval" onChange="setNewValue.call(this,event)">
<option value="">Select Interval</option>
<option value="1500">1,5 seconds</option>
<option value="2000">2 seconds</option>
<option value="2500">2,5 seconds</option>
</select>
JS:
var timeout;
setNewValue= function(e){
var _v = this.value;
if(typeof _v == "undefined" || _v == "") return;
timeout = setTimeout(function() {highlight(transfer);}, _v);
}
的HTML:
<div class="dropdown">
<span class="evalued" rel="">Select Interval</span>
<ul class="options">
<li class="item" style="display:none"><a class="selected" rel="">Select Interval</a></li>
<li class="item"><a rel="1500">1,5 seconds</a></li>
<li class="item"><a rel="2000">2,0 seconds</a></li>
<li class="item"><a rel="2500">2,5 seconds</a></li>
</ul>
</div>
CSS:
.dropdown{
position: relative;
width:180px;
height:28px;
line-height:28px;
font-size:14px;
padding:0 10px;
margin:10px 0;
font-family:"helvetica";
background-color:#f1f1f1;
border-color:#eee;
cursor:pointer
}
.dropdown .selected{
z-index:200
}
.dropdown:hover .options{
display:block
}
.dropdown .options{
position:absolute;
display:none;
top:100%;
padding:0;
margin:0;
overflow:hidden;
width:100%;
left:0;
}
.dropdown .options li{}
.dropdown .options li a{
border-color:#eee;
display:block;
background-color:#f1f1f1;
padding:0 10px;
}
.dropdown .options li a:hover,.dropdown .options li a.selected{
background-color:lightblue;
color:white;
}
JS:
var timeout;
$(function(){
setNewValue2 = function(){
var _v = this.rel;
if(typeof _v == "undefined" || _v == "") return;
timeout = setTimeout(function() {
highlight(transfer);
}, _v);
}
$(".dropdown a").on("click",function(e){
e.preventDefault();
var _r = $(this).attr("rel");
var _t = $(this).text();
$(this).parents(".options").find(".item").show();
$(this).parent().hide();
$(this).parents(".dropdown").find(".evalued").prop({
innerHTML : _t,
rel : _r
});
setNewValue2.call(this);
})
});
<!-- Our Dropdown -->
<select id="timeout">
<option>500</option>
<option>1000</option>
<option>1500</option>
</select>
<script>
var timeout; // we will keep selected value
$("#timeout").change(function(){
timeout=$(this).val();
timeout = setTimeout(function() {highlight(transfer);}, timeout);
});
</script>
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