HTML
首先我们放置一个上传按钮及相关预览信息等。
<form id="upload_form" enctype="multipart/form-data" method="post" action="upload.php" onsubmit="return checkForm()"> <!-- hidden crop params --> <input type="hidden" id="x1" name="x1" autocomplete="off" /> <input type="hidden" id="y1" name="y1" autocomplete="off" /> <input type="hidden" id="x2" name="x2" autocomplete="off" /> <input type="hidden" id="y2" name="y2" autocomplete="off" /> <input type="file" name="image_file" id="image_file" onchange="fileSelectHandler()" /> <div class="error">注意:上传前,先截图[图片小于50KB]</div> <div class="step2"> <img id="preview" /> <div class="info"> <ul> <li> <label>文件大小</label> <input type="text" id="filesize" name="filesize" class="input" autocomplete="off" /></li> <li> <label>类型</label> <input type="text" id="filetype" name="filetype" class="input" autocomplete="off" /></li> <li> <label>图像尺寸</label> <input type="text" id="filedim" name="filedim" class="input" autocomplete="off" /></li> <li> <label>宽度</label> <input type="text" id="w" name="w" class="input" autocomplete="off" /></li> <li> <label>高度</label> <input type="text" id="h" name="h" class="input" autocomplete="off" /></li> </ul> </div> <input type="submit" value="上传" class="btn" /></div> </form>
上传文件条件设置:
var rFilter = /^(image\/jpeg|image\/png|image\/jpg)$/i; if (!rFilter.test(oFile.type)) { $('.error').html('请选择jpg、jpeg或png格式的图片').show(); return; } // check for file size if (oFile.size > 1000 * 1024) { $('.error').html('请上传小于1M的图片').show(); return; }