成组采购

src/utils/tool.js

@@ -155,3 +155,72 @@ export function groupBy(datas, keys) {
   })
   return result
 }
+// 去除js浮点加法bug
+export function numAdd(arg1, arg2) {
+  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
+}
+// 去除js浮点减法bug
+export function numSubtract(arg1, arg2) {
+  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)
+}
+// 去除js浮点乘法bug
+export function numMultiply(arg1, arg2) {
+  var m = 0
+  var s1 = arg1.toString()
+  var s2 = arg2.toString()
+  try {
+    m += s1.split('.')[1].length
+  } catch (e) {
+    console.log(e)
+  }
+  try {
+    m += s2.split('.')[1].length
+  } catch (e) {
+    console.log(e)
+  }
+  return Number(s1.replace('.', '')) * Number(s2.replace('.', '')) / Math.pow(10, m)
+}
+// 去除js浮点除法bug
+export function numDivide(arg1, arg2) {
+  var t1 = 0
+  var t2 = 0
+  var r1, r2
+  try {
+    t1 = arg1.toString().split('.')[1].length
+  } catch (e) {
+    console.log(e)
+  }
+  try {
+    t2 = arg2.toString().split('.')[1].length
+  } catch (e) {
+    console.log(e)
+  }
+  r1 = Math.Number(arg1.toString().replace('.', ''))
+  r2 = Math.Number(arg2.toString().replace('.', ''))
+  return (r1 / r2) * Math.pow(10, t2 - t1)
+}