获取图片上传前的宽高
有时候我们需要对上传的图片做一些限制,我在vue里面用的
var reader = new FileReader(); var that = this; reader.onload = function(e){ //console.log(e); var img = new Image(); img.src = e.target.result; img.onload = function(){
console.log(this.width, " ", this.height); if(this.width != 500 || this.height != 158){ that.$message.error('图片宽高不符合尺寸!!'); that.$refs.upload.abort(); that.$refs.upload.clearFiles(); } } } var url = reader.readAsDataURL(file);