fix by huangtao

@@ -133,7 +133,7 @@ export default {
       this.submit();
     },
     compute() {
-      if (this.productDetail.bidPrice && (Number(this.price) >= this.productDetail.bidPrice)) {
+      if (this.productDetail.bidPrice && (Number(this.price) > 0) && (Number(this.price) <= this.productDetail.bidPrice)) {
         this.$createDialog({
           type: 'confirm',
           title: `最高求购价${this.productDetail.bidPrice}`,