我在我的一种形式使用jQuery。在单击提交按钮时,我调用一个功能QuoteDetailValidation()
。我在其中验证字段。但是在验证了这些字段之后,我尝试获取所有具有errorActive
类的字段。但是不幸的是我听不懂。
看我的代码
$('#saveQuote').on('click', function(event) {
var descriptionData1 = $('input[name=\"QuoteDetail[description][]\"]');
QuoteDetailValidation(descriptionData1);
var selectors = document.querySelectorAll('#quote-quoteItems-form .errorActive').length;
alert(selectors);
return false;
});
function QuoteDetailValidation(descriptionData1) {
for (var i = 0; i < descriptionData1.length; i++) {
var id = descriptionData[i].id;
var value = descriptionData[i].value;
var costid = costData[i].id;
var costValue = costData[i].value;
$.ajax({
type: 'GET',
url: "<?php echo Yii::app()->createUrl('QuoteData/validatedata'); ?>",
data: 'descvalue=' + value + '&Descname=description&costValue=' + costValue + '&costName=cost&descId=' + id + '&costId=' + costid,
success: function(data) {
var obj = $.parseJSON(data);
var cost = obj.cost;
var desc = obj.desc;
if (desc != '' || cost != '') {
if (cost != '') {
$('#' + costid).addClass('errorActive');
$('#' + costid).prev().addClass('error');
$('#' + costid).next().remove();
$('#' + costid).after(cost);
$('#' + costid).parent().removeClass('success');
$('#' + costid).parent().addClass('error');
}
}
},
error: function(data) {
alert('Your data has not been submitted..Please try again');
}
});
}
}
现在会发生什么,当出现错误QuoteDetailValidation()时,将
errorActive
类附加到字段。通过
var selectors = document.querySelectorAll('#quote-quoteItems-form .errorActive').length;
我尝试获取具有errorActive
类的字段的长度。但是在发出selectors
警报时,它始终给出0
。但是当我在获得所有errorActive
类之前发出警报时,然后发出警报selectors
给我完美的计数。我认为在上课errorActive
之前会因为警报而有所延迟。这样我才能数如何使用它。请帮忙。提前致谢。 最佳答案
您可以确定正确选择选择器所需的确切延迟。无论我们添加什么作为延迟都将是假设,并且可能会短暂
ajax请求中使用以下选项的一种
async: false
如下所示:
$.ajax({
type: 'GET',
async: false,
url: "<?php echo Yii::app()->createUrl('QuoteData/validatedata'); ?>",
data: 'descvalue=' + value + '&Descname=description&costValue=' + costValue + '&costName=cost&descId=' + id + '&costId=' + costid,
success: function(data) {}});
将async设置为false意味着要调用的语句必须先完成,然后才能调用函数中的下一条语句。如果您设置async:true(默认值),则该语句将开始执行,无论async语句是否已完成,都将调用下一条语句。 Helpful question
但是我仍然建议您在ajax成功的情况下移动选择器部分,如下所示:-
$.ajax({
type: 'GET',
url: "<?php echo Yii::app()->createUrl('QuoteData/validatedata'); ?>",
data: 'descvalue=' + value + '&Descname=description&costValue=' + costValue + '&costName=cost&descId=' + id + '&costId=' + costid,
success: function(data) {
var obj = $.parseJSON(data);
var cost = obj.cost;
var desc = obj.desc;
if (desc != '' || cost != '') {
if (cost != '') {
$('#' + costid).addClass('errorActive');
$('#' + costid).prev().addClass('error');
$('#' + costid).next().remove();
$('#' + costid).after(cost);
$('#' + costid).parent().removeClass('success');
$('#' + costid).parent().addClass('error');
}
}
var selectors = document.querySelectorAll('#quote-quoteItems-form .errorActive').length;
alert(selectors);
//some logice here or move the above in some function and call it here
},
error: function(data) {
alert('Your data has not been submitted..Please try again');
}
});
或使用call back functions.
更新:尝试如下所示。它将保持异步为真,并将计数逻辑保持在$ .ajax之外。
function QuoteDetailValidation(descriptionData1,submitFormOrAddError) {
for (var i = 0; i < descriptionData1.length; i++) {
var id = descriptionData[i].id;
var value = descriptionData[i].value;
var costid = costData[i].id;
var costValue = costData[i].value;
$.ajax({
type: 'GET',
url: "<?php echo Yii::app()->createUrl('QuoteData/validatedata'); ?>",
data: 'descvalue=' + value + '&Descname=description&costValue=' + costValue + '&costName=cost&descId=' + id + '&costId=' + costid,
success: function(data) {
var obj = $.parseJSON(data);
var cost = obj.cost;
var desc = obj.desc;
if (desc != '' || cost != '') {
if (cost != '') {
$('#' + costid).addClass('errorActive');
$('#' + costid).prev().addClass('error');
$('#' + costid).next().remove();
$('#' + costid).after(cost);
$('#' + costid).parent().removeClass('success');
$('#' + costid).parent().addClass('error');
}
}
submitFormOrAddError(data);
},
error: function(data) {
alert('Your data has not been submitted..Please try again');
}
});
}
}
这样称呼它:
$('#saveQuote').on('click', function(event) {
var descriptionData1 = $('input[name=\"QuoteDetail[description][]\"]');
QuoteDetailValidation(descriptionData1);
QuoteDetailValidation(descriptionData1,function(output){
// here you use the output
var selectors = document.querySelectorAll('#quote-quoteItems-form .errorActive').length; //This line is excuted only after call completes
alert(selectors);
//form submit here if error is zero.
});
alert("hii");//this line is executed without waiting for above call..
return false;
});