{
colspan : 6,
width:120,
xtype: ‘filefield‘,
name: ‘photo‘,
width:120,
buttonText: ‘选择文件‘,
buttonOnly : true,
validator:function(value){
var array=value.split(‘.‘);
if(array[array.length-1]==‘jpg‘ || array[array.length-1]==‘JPG‘||array[array.length-1]==‘bmp‘){
if(this.fileInputEl.dom.files[0].size>20971){
return ‘文件不能超过20k‘;
}
return true;
}else{
return ‘文件格式不正确‘;
}
},
listeners:{
change:{fn:‘changeImgSrc‘}
}
},
changeImgSrc:function(me,o,e){
var array=o.split(‘.‘);
console.log(me.fileInputEl.dom.files[0]);
if(array[array.length-1]==‘jpg‘ || array[array.length-1]==‘JPG‘||array[array.length-1]==‘bmp‘){
if(me.fileInputEl.dom.files[0].size>50971){
console.log(this);
alert(‘文件不能超过50k‘);
this.lookupReference("filefileld").setValue("");
}else{
this.lookupReference(‘imageHead‘).getEl().dom.src=window.URL.createObjectURL(me.fileInputEl.dom.files[0]);
this.lookupReference(‘imageHead‘).show();
}
}else{
alert(‘文件格式不正确‘);
}
},