easyUI filebox限定文件大小

转载自:https://www.2cto.com/kf/201701/574667.html

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 easyui1.5filebox控件中增加文件大小的验证规则

2017-01-07 09:22:00          来源：a307433749的专栏  

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代码：

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$.extend($.fn.validatebox.defaults.rules, {         // filebox验证文件大小的规则函数         // 如：validType : ['fileSize[1,"MB"]']         fileSize : {             validator : function(value, array) {                 var size = array[0];                 var unit = array[1];                 if (!size || isNaN(size) || size == 0) {                     $.error('验证文件大小的值不能为 "' + size + '"');                 } else if (!unit) {                     $.error('请指定验证文件大小的单位');                 }                 var index = -1;                 var unitArr = new Array("bytes", "kb", "mb", "gb", "tb", "pb", "eb", "zb", "yb");                 for (var i = 0; i < unitArr.length; i++) {                     if (unitArr[i] == unit.toLowerCase()) {                         index = i;                         break;                     }                 }                 if (index == -1) {                     $.error('请指定正确的验证文件大小的单位：["bytes", "kb", "mb", "gb", "tb", "pb", "eb", "zb", "yb"]');                 }                 // 转换为bytes公式                 var formula = 1;                 while (index > 0) {                     formula = formula * 1024;                     index--;                 }                 // this为页面上能看到文件名称的文本框，而非真实的file                 // $(this).next()是file元素                 return $(this).next().get(0).files[0].size < parseFloat(size) * formula;             },             message : '文件大小必须小于 {0}{1}'         }     });

使用方式：

html:

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1	<input name="file" class="easyui-filebox" validType="fileSize:[10,'MB']">

js:

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$('#file').filebox({          required : true,          width : '300px',          multiple : true,          validType : ['fileSize[1024,"kb"]' ],          buttonText : '请选择',          buttonAlign : 'right',          prompt : '请选择一个图片类型的文件',          accept : [ 'image/jpg', 'image/bmp', 'image/jpeg', 'image/gif', 'image/png' ]  });