包装入库

utils/utils.js

@@ -36,4 +36,81 @@ export const dateFtt = date => {
     }
     return new Date(Date.parse(date))
   }
-  
+  
+  /**
+   * 小数加法
+   */
+  export const accAdd = (arg1, arg2) => {
+    var r1, r2, m, c
+    try {
+      r1 = arg1.toString().split('.')[1].length
+    } catch (e) {
+      r1 = 0
+    }
+    try {
+      r2 = arg2.toString().split('.')[1].length
+    } catch (e) {
+      r2 = 0
+    }
+    c = Math.abs(r1 - r2)
+    m = Math.pow(10, Math.max(r1, r2))
+    if (c > 0) {
+      var cm = Math.pow(10, c)
+      if (r1 > r2) {
+        arg1 = Number(arg1.toString().replace('.', ''))
+        arg2 = Number(arg2.toString().replace('.', '')) * cm
+      } else {
+        arg1 = Number(arg1.toString().replace('.', '')) * cm
+        arg2 = Number(arg2.toString().replace('.', ''))
+      }
+    } else {
+      arg1 = Number(arg1.toString().replace('.', ''))
+      arg2 = Number(arg2.toString().replace('.', ''))
+    }
+    return (arg1 + arg2) / m
+  }
+  
+  /**
+   * 小数减法
+   */
+  export const accSubtract = (arg1, arg2) => {
+    var r1, r2, m, c
+    try {
+      r1 = arg1.toString().split('.')[1].length
+    } catch (e) {
+      r1 = 0
+    }
+    try {
+      r2 = arg2.toString().split('.')[1].length
+    } catch (e) {
+      r2 = 0
+    }
+    c = Math.abs(r1 - r2)
+    m = Math.pow(10, Math.max(r1, r2))
+    if (c > 0) {
+      var cm = Math.pow(10, c)
+      if (r1 > r2) {
+        arg1 = Number(arg1.toString().replace('.', ''))
+        arg2 = Number(arg2.toString().replace('.', '')) * cm
+      } else {
+        arg1 = Number(arg1.toString().replace('.', '')) * cm
+        arg2 = Number(arg2.toString().replace('.', ''))
+      }
+    } else {
+      arg1 = Number(arg1.toString().replace('.', ''))
+      arg2 = Number(arg2.toString().replace('.', ''))
+    }
+    return (arg1 - arg2) / m
+  }
+  
+  /**
+   * 小数乘法
+   */
+  export const accMul = (arg1, arg2) => {
+    var m = 0
+    var s1 = arg1.toString()
+    var s2 = arg2.toString()
+    try { m += s1.split('.')[1].length } catch (e) {}
+    try { m += s2.split('.')[1].length } catch (e) {}
+    return Number(s1.replace('.', '')) * Number(s2.replace('.', '')) / Math.pow(10, m)
+  }