🐛(component): 修复 input-number 组件经度丢失

package/component/src/component/inputNumber/index.vue

@@ -11,6 +11,7 @@ import { LayIcon } from "@layui/icons-vue";
 import layButton from "../button/index.vue";
 import { ref, watch, withDefaults, computed, Ref } from "vue";
 import { InputNumberSize } from "./interface";
+import { add, sub } from "./math"
 
 export interface InputNumberProps {
   modelValue?: number;
@@ -84,11 +85,11 @@ const maxControl = computed(() => {
 });
 
 const addition = function () {
-  num.value += Number(props.step);
+  num.value = add(num.value, props.step);
 };
 
 const subtraction = function () {
-  num.value -= Number(props.step);
+  num.value = Number(sub(num.value, props.step));
 };
 
 const longDown = function (fn: Function) {

package/component/src/component/inputNumber/math.ts

@@ -0,0 +1,21 @@
+//加法
+function add(arg1: number, arg2: number) {
+    var r1, r2, m;
+    try { r1 = arg1.toString().split(".")[1].length } catch (e) { r1 = 0 }
+    try { r2 = arg2.toString().split(".")[1].length } catch (e) { r2 = 0 }
+    m = Math.pow(10, Math.max(r1, r2))
+    return (arg1 * m + arg2 * m) / m
+}
+//减法
+function sub(arg1: number, arg2: number) {
+    var r1, r2, m, n;
+    try { r1 = arg1.toString().split(".")[1].length } catch (e) { r1 = 0 }
+    try { r2 = arg2.toString().split(".")[1].length } catch (e) { r2 = 0 }
+    m = Math.pow(10, Math.max(r1, r2));
+    n = (r1 >= r2) ? r1 : r2;
+    return ((arg1 * m - arg2 * m) / m).toFixed(n);
+}
+export {
+  add,
+  sub,
+}