防止Ajax调用内JavaScript中的默认行为或标记单击事件
过去我曾使用防止Ajax调用内JavaScript中的默认行为或标记单击事件,javascript,ajax,addeventlistener,preventdefault,selectors-api,Javascript,Ajax,Addeventlistener,Preventdefault,Selectors Api,过去我曾使用e.preventDefault()来取消单击事件,但我很难弄清楚为什么它在这种情况下不起作用。我为列中的所有a标记分配了一个类名,然后使用文档获取对它们的引用。queryselectoral(.classname),然后为每个a标记添加一个从服务器获取值的单击事件,如果未满足验证,则应阻止默认值并给出用户消息 (function(){ const userName = document.getElementById('FullName').value; // route $rou
e.preventDefault()
来取消单击事件,但我很难弄清楚为什么它在这种情况下不起作用。我为列中的所有a标记分配了一个类名,然后使用文档获取对它们的引用。queryselectoral(.classname)
,然后为每个a标记添加一个从服务器获取值的单击事件,如果未满足验证,则应阻止默认值并给出用户消息
(function(){
const userName = document.getElementById('FullName').value;
// route
$route = '';
if (CheckDeploy(window.location.origin)) {
$route = '/x/GetReviewerCheck/';
} else {
$route = '/servername/s/GetReviewerCheck/';
}
let ReviewButtons = document.querySelectorAll('.verifyReviewer'); // .verifyReviewer = className of all a tags in table column
for (var i = 0; i < ReviewButtons.length; i++) {
const ReviewButton = ReviewButtons[i];
ReviewButton.addEventListener('click', function (e) {
let newRow = ReviewButton.parentElement.parentElement;
let AuditorName = newRow.cells[2].innerText;
let ReviewType = newRow.cells[8].innerText;
let ReviewTypeID = 0;
if (ReviewType == 'Peer Review') {
ReviewTypeID = 3;
} else if (ReviewType == 'Team Leader Review') {
ReviewTypeID = 4;
}
else if (ReviewType == 'Supervisor Review') {
ReviewTypeID = 5;
}
let id = newRow.cells[0].firstChild.getAttribute('id').split('_')[1];
$.ajax({
url: $route,
type: 'POST',
data: { userName: userName, auditor: AuditorName, reviewType: ReviewTypeID, recordID: id },
success: function (data) {
// if data is 1, prevent default
if(data == 1){
e.preventDefault();
return false;
}
}
});
}, false);
}
})();
(函数(){
const userName=document.getElementById('FullName')。值;
//路线
$route='';
if(选中Deploy(window.location.origin)){
$route='/x/GetReviewerCheck/';
}否则{
$route='/servername/s/GetReviewerCheck/';
}
让ReviewButtons=document.querySelectorAll('.verifyReviewer');//.verifyReviewer=table列中所有a标记的类名
对于(变量i=0;i
它不工作,因为响应是异步的。e、 preventDefault()将仅在ajax调用从服务器获得响应后执行。
你可以这样做
for (var i = 0; i < ReviewButtons.length; i++) {
const ReviewButton = ReviewButtons[i];
ReviewButton.addEventListener('click', function (e) {
let newRow = ReviewButton.parentElement.parentElement;
let AuditorName = newRow.cells[2].innerText;
let ReviewType = newRow.cells[8].innerText;
let ReviewTypeID = 0;
if (ReviewType == 'Peer Review') {
ReviewTypeID = 3;
} else if (ReviewType == 'Team Leader Review') {
ReviewTypeID = 4;
}
else if (ReviewType == 'Supervisor Review') {
ReviewTypeID = 5;
}
let id = newRow.cells[0].firstChild.getAttribute('id').split('_')[1];
$.ajax({
url: $route,
type: 'POST',
data: { userName: userName, auditor: AuditorName, reviewType: ReviewTypeID, recordID: id },
beforeSend:function()
{
e.preventDefault(); //Prevent default action for all instances.
},
success: function (data) {
// if data is 1, prevent default
if(data != 1){
$(this).unbind('click'); // Restores the click default behaviour if data != 1
return false;
}
}
});
}, false);
}
for(变量i=0;i
它不工作,因为响应是异步的。e、 preventDefault()将仅在ajax调用从服务器获得响应后执行。