Php 如何实现基于ajax响应的进度条
我曾尝试基于服务器端(PHP)的ajax响应实现进度条,但我无法识别进度条的计算,比如如何通过ajax计算提交表单的请求和响应之间的进度条计时Php 如何实现基于ajax响应的进度条,php,jquery,ajax,progress-bar,Php,Jquery,Ajax,Progress Bar,我曾尝试基于服务器端(PHP)的ajax响应实现进度条,但我无法识别进度条的计算,比如如何通过ajax计算提交表单的请求和响应之间的进度条计时 <script> $('.uploadProject').on('submit',function(e){ e.preventDefault(); //ray.ajax(); var formData = new FormData($(this)[0]); progress(80, $('#progress
<script>
$('.uploadProject').on('submit',function(e){
e.preventDefault();
//ray.ajax();
var formData = new FormData($(this)[0]);
progress(80, $('#progressBar'));
$.ajax({
url: "ajax/submitted_project_action.php",
type: "POST",
data: formData,
async: false,
success: function (data) {
if(data==1){
window.location.href="submitted_project.php?success";
}else{
window.location.href="submitted_project.php?error";
}
},
cache: false,
contentType: false,
processData: false
});
})
$('.uploadProject')。在('submit',函数(e)上{
e、 预防默认值();
//ray.ajax();
var formData=新formData($(此)[0]);
进度(80美元);
$.ajax({
url:“ajax/submitted_project_action.php”,
类型:“POST”,
数据:formData,
async:false,
成功:功能(数据){
如果(数据==1){
window.location.href=“submitted_project.php?success”;
}否则{
window.location.href=“submitted_project.php?error”;
}
},
cache:false,
contentType:false,
processData:false
});
})
功能进度(百分比,$element){
var progressBarWidth=percent*$element.width()/100;
$element.find('div').animate({width:progressBarWidth},500).html(百分比+“%”);
}
我的HTML代码
<style>
#progressBar {
width: 400px;
height: 22px;
border: 1px solid #111;
background-color: #292929;
}
#progressBar div {
height: 100%;
color: #fff;
text-align: right;
line-height: 22px; /* same as #progressBar height if we want text middle aligned */
width: 0;
background-color: #0099ff;
}
</style>
<div id="progressBar"><div></div></div>
#进度条{
宽度:400px;
高度:22px;
边框:1px实心#111;
背景色:#292929;
}
#进步酒吧部{
身高:100%;
颜色:#fff;
文本对齐:右对齐;
行高:22px;/*如果希望文本中间对齐,则与#进度条高度相同*/
宽度:0;
背景色:#0099ff;
}
最好的办法是
例如:
$.ajax({
type: 'POST', // GET/POST
url: "/", // Some URL
data: {}, // Misc data
beforeSend: function(XMLHttpRequest) // Do the following before sending the request
{
//Upload progress
XMLHttpRequest.upload.addEventListener("progress", function(event) // Add a "progress" listener.
{
if (evt.lengthComputable)
{
var percentComplete = (event.loaded / event.total) * 100;
// You can use this data for your progress bar.
}
}, false);
},
success: function(data)
{
// Here, you can make your progress bar green or something.
}
});
在这里可以找到正确的解决方案:我在运行上述代码时出错。TypeError:XMLHttpRequest.upload未定义您需要先定义它。
$.ajax({
type: 'POST', // GET/POST
url: "/", // Some URL
data: {}, // Misc data
beforeSend: function(XMLHttpRequest) // Do the following before sending the request
{
//Upload progress
XMLHttpRequest.upload.addEventListener("progress", function(event) // Add a "progress" listener.
{
if (evt.lengthComputable)
{
var percentComplete = (event.loaded / event.total) * 100;
// You can use this data for your progress bar.
}
}, false);
},
success: function(data)
{
// Here, you can make your progress bar green or something.
}
});