我希望在输入后得到第二个元素的值。 这是代码：
<div class="col-md-12 nopadding lines">
<label>
<input type="checkbox"> {{$e->title}}
<small class="desc">/ @if($i->ctype==0) Daily@else Weekly @endif</small>
<small class="price">{{$e->price}} TL</small>
</label>
</div>
此代码在foreach中迭代。所以我有很多这个块。 我想在ajax的成功功能中达到价格值。 我怎样才能得到这个值？
答案 0 :(得分：1)
您可以链接两个var DB_contents = {}; // our knowledge and queue store
function ensure_DB_has_measure(label) {
return new Promise(function(_pass, _fail) {
// A more generalised fail function for clarity
function fail(err) {
// Remove the queue so nothing else waits
var original = DB_contents[label];
delete DB_contents[label];
// Inform everything in the queue of the failure
if(original instaceof Array) {
original.forEach(function(promise) {
promise.fail(err);
});
}
// Follow own failure method
_fail.apply(_fail, arguments);
}
function pass(result) {
// Replace the queue with the result so future calls don't query
var original = DB_contents[label];
DB_contents[label] = result;
// Inform all waiting calls of the result
if(original instanceof Array)
original.forEach(function(promise) {
promise.pass(result);
});
// Follow own completion path
_pass.apply(_pass, arguments);
}
// Check to see if it needs to queue
if(DB_contents[label] instanceof Array) {
DB_contents[label].push({pass:pass, fail:_fail});
// Or if the value is already here it can return
} else if(DB_contents[label]) {
_pass(DB_contents[label]);
// Or it needs to be fetched
} else {
// Initialise the queue
DB_contents[label] = [];
// Check for pre-existence
FoodMeasureRepository
.findOne({"name.en":label})
.then(function(result) {
if(result) {
pass(result);
} else {
FoodMeasureRepository
.insertOne({name:{en:label, bg:label}})
.then(pass)
.catch(fail);
}
})
.catch(fail)
}
});
}
// The above should go outside the async calls
// This can now replace the contents of your second async function body
ensure_DB_has_measure(item.label)
.then(function(result) {
entity.measures.push({
measureId: result._id,
value: parseInt(item.eqv)
});
callback();
})
.catch(function(err) {
callback(err);
})
方法：
.next()或者你可以使用$('input').next().next();
和.nextAll()来获得第二个兄弟姐妹：
.eq()当然，如果你知道第二个元素的类，你也可以指定它：
$('input').nextAll().eq(1);