How to submit form and implement file upload with ajax-JS Tutorial-php.cn

How to submit form and implement file upload with ajax

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Release： 2018-04-03 14:19:11

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This time I will show you how to submit a form form and implement it with ajaxFile upload, what are the notes for ajax to submit a form form and implement file uploading, the following is a practical case, Let’s take a look.

A few days ago, I discovered some minor problems. When I was writing the background management page, I needed to upload a picture. So I used a very common Form to upload a Json string and image files;

Form form to upload images, you only need to add enctype = 'multipart/form-data' in the

tag, like this You can upload pictures;

But here comes the problem. When I submit the form using the Form, the page that submits the return value will pop up directly and the original page will be refreshed;

In this way, we can arrive first Asynchronous Ajax can achieve partial refresh;

Without further ado, let’s go directly to the code;

First is the html:

<form id = "form_insert" method = "post">
<table style = "font-size: 13px; margin: 13px auto;"> 
<tr>
<td style = "text-align: right;">类型</td>
<td>:  <input id = "acttype" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">名称</td>
<td>:  <input id = "actname" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">开始时间</td>
<td>:  <input id = "actstarttime" style = "width:150px" class = "easyui-datetimebox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">结束时间</td>
<td>:  <input id = "actendtime" style = "width:150px" class = "easyui-datetimebox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">省</td>
<td>:  <input id ="mem_Province" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td>
</tr>
<tr><td colspan="2" style="height: 13px"></td>
</tr>
<tr>
<td style="text-align: right;">市</td>
<td>:  <input id = "mem_City" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td>
</tr>
<tr><td colspan = "2" style = "height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">门店</td>
<td>:  <input id = "mem_Shop" style = "width:150px" class = "easyui-combobox" data-options = "required:true"></td>
</tr>
<tr><td colspan="2" style="height: 13px"></td>
</tr>
<tr>
<td style = "text-align: right;">具体地址</td>
<td>:  <input id = "actadd" style = "width:150px" class = "easyui-textbox" data-options = "required:true"></td>
</tr>
</table>
</form>
<form id = "form_sub" style = "font-size: 13px;">
<table style="font-size: 13px; margin: 13px auto;">
<tr>
<td style = "text-align: right;">上传图片</td>
<td>:  <input class = "easyui-filebox" name = &#39;photo&#39; style = "width:153px" data-options = "required:true,prompt:&#39;选择上传图片&#39;,buttonText:&#39; 选 择 &#39;"></td>
<td><input type = &#39;text&#39; id = "Item" name = &#39;item&#39; style = "display:none;"></td>
</tr>
</table>
</form>
<p style = "text-align:right; padding:2px 5px;">
<a id = "sub" class = "easyui-linkbutton" data-options = "iconCls:&#39;icon-ok&#39;" href = "javascript:void(0)">
保存
</a>    
<a class = "easyui-linkbutton" data-options = "iconCls:&#39;icon-quxiao&#39;" href = "javascript:void(0)" onclick = "window_open($(&#39;#insert_form&#39;), &#39;close&#39;)">
取消
</a>    
</p>

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The above is the html code, for the convenience of everyone to copy, The css is directly in the tag;

Many friends want to ask why two form forms are written;

This is because according to the need to receive data in the background, the information transmitted becomes String and picture;

First turn the information into a string;

and then put it in the second Form form. A careful friend found that in the second form form The style="display:none" in the tag is a hidden tag;

Yes, I got the data through the first form and turned it into a string through js and then put it in the hidden tag. ;

In this way, you can submit the second Form form through Ajax;

js code:

$( '#sub' ).click( function () {
　　var actTimeStart1 = $ ('#actstarttime') . datebox ('getValue');
　　var actTimeStart = changeDateToLong(actTimeStart1);
　　var actTimeEnd1 = $('#actendtime').datebox('getValue');
　　var actTimeEnd = changeDateToLong(actTimeEnd1);
　　if(actTimeStart != '' && actTimeEnd != '' && (actTimeStart - actTimeEnd > 0)){
　　　　$.messager.alert('警告','结束时间不能小于开始时间！','error');
　　　　return false;
　　}
　　else{
　　　　if ($('#form_insert').form('validate')) {
　　　　　　var actType = document.getElementById("acttype").value;
　　　　　　var actName = document.getElementById("actname").value;
　　　　　　var actArea = document.getElementById("actadd").value;
　　　　　　var actTimeStart1 = $('#actstarttime').datebox('getValue');
　　　　　　var actTimeStart = changeDateToLong(actTimeStart1);
　　　　　　var actTimeEnd1 = $('#actendtime').datebox('getValue');
　　　　　　var actTimeEnd = changeDateToLong(actTimeEnd1);
　　　　　　var t2 = $('#mem_Shop').combobox('getValue');
　　　　　　var jsonObj = {actType:actType,actName:actName,actTimeStart:actTimeStart,actTimeEnd:actTimeEnd,actArea:actArea,t2:t2};
　　　　　　var activityMemberJson = JSON.stringify(jsonObj);
　　　　　　document.getElementById("Item").value=activityMemberJson;
　　　　　　var form = new FormData(document.getElementById("form_sub"));
　　　　　　$.ajax({
　　　　　　　　url : ../activity/actionActivityInsert', //http://www.cnblogs.com/jayxxxxxxx/
　　　　　　　　type : "post",
　　　　　　　　data : form, //第二个Form表单的内容
　　　　　　　　processData : false,
　　　　　　　　contentType : false,
　　　　　　　　error : function(request) {
　　　　　　　　},
　　　　　　　　success : function(data) {
　　　　　　　　　　$('#box').datagrid('reload');
　　　　　　　　}
　　　　　　});
　　　　　　window_open($('#insert_form'), 'close');
　　　　}else {
　　　　　　$.messager.alert('警告' , '信息不完整!' , 'error');
　　　　}
　　}
});

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Everyone has seen that I used the FormData method. To be honest, this is HTML5 is really easy to use. You don’t need to write enctype = 'multipart/form-data' when uploading images;

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to php Chinese website Other related articles!