js单图片上传

 

<form action="" id="form1">
<input type="file" name="head_img" style="display:none;" id="file0"> //这里一定要写name  后台就是通过name接受内容
<div class="tx upload">
<lable>
{if condition="($company_info.cover_img)"}
<img id="box_headimg" src="{$company_info.cover_img}" alt="">
{else/}
<img id="box_headimg" src="STATIC_BOX/box/images/tx.png" alt="">
{/if}
</lable>
</div>
</form>

 

前台js

 

$("#file0").change(function() {

if (this.files && this.files[0]) {

 

var objUrl = getObjectURL(this.files[0]);

var data = new FormData($('#form1')[0]);

$.ajax({
url: "{:url('company/upload')}",
type: 'POST',
data: data,
async: false,
dataType: 'JSON',
processData: false,
contentType: false,

}).done(function(ret){
//alert(ret.path_img);
if(ret.error==1){
$('#box_headimg').attr('src',ret.path_img);
}else{
alert('上传失败');
}
});

}
});

 

function getObjectURL(file) {
var url = null;
if (window.createObjectURL != undefined) { // basic
url = window.createObjectURL(file);
} else if (window.URL != undefined) { // mozilla(firefox)
url = window.URL.createObjectURL(file);
} else if (window.webkitURL != undefined) { // webkit or chrome
url = window.webkitURL.createObjectURL(file);
}
return url;
}

 

后台php

public function upload(){

$file = request()->file('head_img');

$path=str_replace('\\', '/', 'upload/box');

if (!is_dir($path)) {
mkdir($path, 0777,true);
}
// $path=company_coverimg_path('854');

if($file){
$info = $file->move($path);
if($info){
$path_img ='/'.$path.'/'.$info->getSaveName();
$data['path_img']=$path_img;
$data['error']=1;
}else{
// 上传失败获取错误信息
$msg = $file->getError();
$data['error']=2;
$data['msg']=$msg;
}
}

echo json_encode($data);

}

 

 

 

 

<scroll-view scroll-y="true" style="height: 200rpx;">
<view style="background: red; width: 200px; height: 100px; display: inline-block" ></view>
<view style="background: green; width: 200px; height: 100px; display: inline-block"></view>
<view style="background: blue; width: 200px; height: 100px; display: inline-block"></view>
<view style="background: yellow; width: 200px; height: 100px; display: inline-block"></view>
</scroll-view>

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