<el-input placeholder v-model="scope.row[index]" oninput="value=value.replace(/[^\-?\d.]/g,'').replace(/^\./g,'').replace('.','$#$').replace(/\./g,'').replace('$#$','.').replace('-','$#$').replace(/\-/g,'').replace('$#$','-')"></el-input>
<el-input placeholder v-model="scope.row[index]" oninput="value=value.replace(/[^\-?\d.]/g,'').replace(/^\./g,'').replace('.','$#$').replace(/\./g,'').replace('$#$','.').replace('-','$#$').replace(/\-/g,'').replace('$#$','-')"></el-input>