[英]jQuery AJAX POST executes twice
我的AJAX調用始終執行兩次。 我正在使用普通的Javascript事件處理程序和<input type="button">
。 我不太確定我要去哪里,服務器返回一個JSON數組,AJAX可以成功接收並解析該數組。 我非常確定這是我的AJAX,因為運行代碼時,警報會彈出兩次。 alert("ran")
。 服務器不返回任何重定向頭。
HTML
<form action="/" onsubmit="return false">
<b>Enter your announcement here</b>
<span class="dropdown"><img src="/index/img/p/help" style="width: 20px; height: 20px;"/>
<span class='dropdown-content'>
<b>tip:</b> try to make your announcement less than 100 words. Choose what you say wisely.
</span>
</span>
<textarea class='form-control' id='announcetxtbox' style='resize: vertical'></textarea>
<select id="announce-type">
<option value="general">General</option>
<option value="social">Social</option>
<option value="world">World</option>
<option value="maint">Site Maintenence</option>
</select>
<input type="button" id="announce-submit" class="btn btn-primary" value="Submit">
<script>
CKEDITOR.replace("announcetxtbox");
CKEDITOR.config.toolbar = [
{name: 'basicstyles', items: ['Bold', 'Italic', 'Underline', 'Strike', 'Subscript', 'Superscript', '-', 'RemoveFormat']},
];
</script>
</form>
JAVASCRIPT
function _(str) {
return d.getElementById(str);
}
function get_announcement_data(ele) {
var type, answer = _("announce-msg");
switch (ele) {
case "general":
type = "G";
break;
case "social":
type = "S";
break;
case "world":
type = "W";
break;
case "maint":
type = "M";
break;
default:
type = "G";
break;
}
$.ajax({
url: "/profile_scripts/announcements.php?u=get",
type: "POST",
data: {type: type, CSRF_TOKEN: _("CSRF_TOKEN_VALUE").value},
success: function (data) {
data = JSON.parse(data);
answer.innerHTML = "";
for (var i = 0; i < data.length; i++) {
if (data[i].response == 1) {
answer.innerHTML += data[i].msg + "<small> Written By: " + data[i].author + " on " + data[i].date + "</small>"
} else {
answer.innerHTML = data[i].msg;
}
}
}
})
}
function add_announcement() { //THIS FUNCTION RUNS TWICE!
var announcement = CKEDITOR.instances.announcetxtbox.getData();
var type = _("announce-type").value;
var code;
switch (type) {
case "general":
code = "G";
break;
case "social":
code = "S";
break;
case "world":
code = "W";
break;
case "maint":
code = "M";
break;
default:
code = "G";
break;
}
$.ajax({
url: "/profile_scripts/announcements.php?u=post",
type: "POST",
data: {type: code, CSRF_TOKEN: _("CSRF_TOKEN_VALUE").value, msg: announcement},
success: function (data) {
data = JSON.parse(data);
if (data.response == 1) {
alert("ran");
get_announcement_data(type);
} else {
alert("Something went wrong!");
}
}
});
}
d.addEventListener("DOMContentLoaded", function () {
_("quick-actions-go").addEventListener("click", quick_action_search)
_("manual-data-pull").addEventListener("click", pull_data);
_("announce-submit").addEventListener("click", function (e) {
add_announcement(); <--- Event Listener
e.preventDefault();
e.stopPropagation();
});
var tab_elements = d.querySelectorAll("[id=ann-tab]");
for (var i = 0; i < tab_elements.length; i++) {
tab_elements[i].addEventListener("click", function (e) {
e.preventDefault();
get_announcement_data(this.dataset.modeval)
});
}
});
提交表格時。 兩個ajax都會調用。 您首先獲取導致問題的方法和發布方法
您的表單在這里提交了兩次。 您大約1.在調用fun add_announcement時傳遞“ e”。 AAD添加線
e.preventDefault();
作為有趣的第一行add_announcement(e)。
另外,從表單取消綁定提交活動
$('form').unbind('submit').submit();
希望能幫助到你。
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