更新代码

public/assets/home/js/operation.js

@@ -0,0 +1,89 @@
+// 运算类
+
+// 整合运算函数
+function getMax(operation, arg1, arg2){
+    var res = '';
+
+    switch(operation)
+    {
+        case '+':
+        res = accAdd(arg1, arg2);
+        break;
+        case '-':
+        res = accSubtr(arg1, arg2);
+        break;
+        case '*':
+        res = accMul(arg1, arg2);
+        break;
+        case '/':
+        res = accDiv(arg1, arg2);
+        break;
+    }
+
+    return res;
+}
+
+
+function accAdd(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;
+}
+
+function accSubtr(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));
+    //动态控制精度长度
+    n = (r1 >= r2) ? r1 : r2;
+    return ((arg1 * m - arg2 * m) / m).toFixed(n);
+}
+
+function accMul(arg1, arg2) {
+    var m = 0,
+    s1 = arg1.toString(),
+    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);
+}
+
+function accDiv(arg1, arg2) {
+    var t1 = 0,
+    t2 = 0,
+    r1, r2;
+    try {
+        t1 = arg1.toString().split(".")[1].length;
+    } catch (e) {}
+    try {
+        t2 = arg2.toString().split(".")[1].length;
+    } catch (e) {}
+    with(Math) {
+        r1 = Number(arg1.toString().replace(".", ""));
+        r2 = Number(arg2.toString().replace(".", ""));
+        return (r1 / r2) * pow(10, t2 - t1);
+    }
+}