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[英]Javascript create button and trigger onclick function on HTML
[英]Get jQuery function to trigger on HTML Button OnClick
我有以下 HTML/JQuery:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Login</title>
<script src="jQuery.js"></script>
<script>
$(document).ready(function(){
$(function(){
$("#sb").click(function(e){
e.preventDefault();
getmessage = "Yes";
getmessage = encodeURIComponent(getmessage);//url encodes data
$.ajax({
type: "POST",
url: "get_login.php",
data: {'getmessage': getmessage},
dataType: "json",
success: function(data) {
$("#message_ajax").html("<div class='successMessage'>" + data.message +"</div>");
}
});
});
});
});
</script>
</head>
<body>
<h1>Login</h1>
<p>Please enter your e-mail and password</p>
<form name = "loginform" action = "http://dev.speechlink.co.uk/David/get_login.php" method = "post">
<p>E-mail<input name = "username" type="text" size="25"/><label id ="emailStatus"></label></p>
<p>Password<input name = "password" type="text" size="25"/><label id ="passwordStatus"></label></p>
<p><input type="hidden" name="usertype" value = "SupportStaff" /></p>
<p>><input type ="button" id = "sb"value="Create Account"/></p>
</form>
<div id = "message_ajax"></div>
</body>
</html>
我無法讓事件處理程序(在 jQuery 中)在用戶按下“創建帳戶”按鈕時觸發......
我立即看到三個問題:
您調用了兩次ready
(當您將 function 傳遞給$()
時,就像將 function 傳遞給$(document).ready()
一樣)。 這在很大程度上是無害的,但完全沒有必要。
您在按鈕上的id
屬性被撞到下一個; 瀏覽器可能會忽略它:
<input type ="button" id = "sb"value="Create Account"/> <!-- ^^^^^^^^^ -->
(如果需要,可以在=
周圍留有空格,但將"sb"
推value
可能行不通。)
(可能偏離主題,可能不是):您似乎(從引用的代碼中)成為隱式全局恐怖的犧牲品。 您可能應該聲明您的getmessage
變量。
所以:
<script>
$(document).ready(function(){
// Removed the unnecessary `$(function() { ...` here and the matching closing bits at the end
$("#sb").click(function(e){
e.preventDefault();
var getmessage = "Yes"; // <== Added `var`
getmessage = encodeURIComponent(getmessage);//url encodes data
$.ajax({
type: "POST",
url: "get_login.php",
data: {'getmessage': getmessage},
dataType: "json",
success: function(data) {
$("#message_ajax").html("<div class='successMessage'>" + data.message +"</div>");
}
});
});
});
</script>
和
<input type="button" id="sb" value="Create Account"/>
你html不好:
<p>><input type ="button" id = "sb" value="Create Account"/></p>
應該
<p><input type ="button" id="sb" value="Create Account"/></p>
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