Javascript Ajax 成功：{return false;}
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Ajax success: {return false;}
提问by Rens Tillmann
I want to return falsefrom $.ajaxwhen successis complete:
我想false从完成$.ajax时返回success：
$.ajax({
url: '' + $website_url + 'queries/voorraad_berekenen.php',
type: 'post',
data: {
aantal: $(this).parent('form').children('.quantity').val(),
item_number_1: $(this).parent('form').children('.item_number_1').val()
},
success: function(result) {
return false;
}
});
This doesn't work. Is there a work around?
这不起作用。有解决办法吗？
回答by thecodeparadox
From your post I guess that you call a function that contains the $.ajax()and try to return falseto that function. but you can't do that such way, because AJAXis asynchronous.
从您的帖子中，我猜您调用了一个包含 的函数$.ajax()并尝试调用return false该函数。但你不能这样做，因为AJAX是异步的。
It's better to call a function from the ajax success function like following:
最好从 ajax 成功函数中调用一个函数，如下所示：
$.ajax({
url: '' + $website_url + 'queries/voorraad_berekenen.php',
type: 'post',
data: {
aantal: $(this).parent('form').children('.quantity').val(),
item_number_1: $(this).parent('form').children('.item_number_1').val()
},
success: function(result) {
var returned = true;
if(some_condition_not_satisfied) {
returned = false;
} else {
}
// call a function
calledFromAjaxSuccess(returned);
}
});
function calledFromAjaxSuccess(result) {
if(result) {
alert('TRUE');
} else {
alert('FALSE');
}
}
回答by Gusgus
Maybe you could try something like this (values 1 and 0 should be changed to the ones that you use):
也许您可以尝试这样的操作（值 1 和 0 应更改为您使用的值）：
success: function(result){
if(result === '1'){
// do something
}
else
return false;
}
回答by Raja Ram T
just use asunc false it can work fine i have implemented like that only
只需使用 asunc false 它就可以正常工作我只是这样实现的
just try it
就试一试吧
$.ajax({
url: '' + $website_url + 'queries/voorraad_berekenen.php',
type: 'post',
data: {
aantal: $(this).parent('form').children('.quantity').val(),
item_number_1: $(this).parent('form').children('.item_number_1').val()
},
async: false, //=>>>>>>>>>>> here >>>>>>>>>>>
success: function(result) {
return false;
}
});
it is working fine try it once
它工作正常尝试一次
回答by harsha
<form action="yourpage" method="post" onsubmit="return matchpass();">
<div>
<label> Name</label>
<input type="text" name="name" id="name">
</div>
<div>
<label> Email ID</label>
<input type="email" name="email" id="email">
</div>
<div>
<label> Mobile No</label>
<input type="text" name="mob" maxlength="10" onkeyup="check_if_exists();" autocomplete="off" id="mob">
</div>
<div>
<button type="button" >Send</button>
</div>
<span id="err"></span>
<div>
<label> OTP</label>
<input type="password" name="otp" id="otp" maxlength="6" placeholder="****">
<span id="err2"></span>
</div>
<div>
<input type="reset" value="Reset" class="reset-btn">
<input type="submit" name="submit" id="submit" value="Submit" >
</div>
</form>
<input type="hidden" id="otpcheck"/>
<script>
function matchpass()
{
$.ajax({
type:"post",
url: "yourpage",
data:{ mobile:mob,otp:otp},
success:function(data)
{
if(data==1)
{
document.getElementById("otpcheck").value=1; //important
}else{
document.getElementById("err2").style.color = "red";
document.getElementById("err2").innerHTML = "invalid OTP Number ";
document.getElementById("otpcheck").value=0; //important
}
}
});
if(document.getElementById("otpcheck").value==0){
return false;
}
}
回答by Jakir Hossen
I face this problem. then i found the actual solution. use async : false, inside ajax call
我面临这个问题。然后我找到了实际的解决方案。使用 async : false，在 ajax 调用中
function thisisavailavailusername(uname){
var dataString = 'username='+ uname.value;
var trueorfalse = false;
$.ajax({
type: "post",
url: "/BloodBook/checkavailableusername",
data: dataString,
cache: false,
async : false, //user this then everything ok
success: function(html){
if(html=="true"){
$('#validusername').html('Available');
trueorfalse = true;
}else{
$('#validusername').html('Not Available');
trueorfalse = false;
}
},
error: function() {
alert("Something Wrong...");
}
});
return trueorfalse;
}
}
