Created
October 20, 2014 11:33
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移动端获取本地图片并预览
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/* 文件上传预览图 */ | |
function FileLoad(settings) { | |
this.input = settings.input; //input["file"] | |
this.imgView = settings.imgView;//预览图片容器 | |
this.delBtn = settings.delBtn; //删除按钮 | |
this.init(); | |
} | |
FileLoad.prototype = { | |
init: function () { | |
var _this = this; | |
if (typeof(FileReader) === 'undefined') { | |
} else { | |
this.input.on("change", function () { | |
_this.readFile.call(_this); | |
}); | |
} | |
_this.delBtn.on("click", function (e) { | |
_this.imgView.html(""); | |
_this.input.val(""); | |
$(this).hide(); | |
}) | |
}, | |
readFile: function () { | |
var _this = this; | |
var file = this.input[0].files[0]; | |
var fileType = file.type;//有些安卓浏览器识别不到这个属性 | |
if (fileType && !/image\/\w+/.test(file.type)) { | |
alert("请上传图片文件") | |
return false; | |
} | |
var reader = new FileReader(); | |
reader.readAsDataURL(file); | |
reader.onload = function (e) { | |
if (!fileType) { //当安卓低版本识别不到这个属性时,需要强制的把转化后的base64指定类型 | |
var imgSrc = e.target.result.replace(/data:/, "data:image/png;"); | |
} else { | |
var imgSrc = e.target.result; | |
} | |
_this.imgView.html('<img src="' + imgSrc + '"/>'); | |
_this.delBtn.show(); | |
} | |
} | |
} |
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