// 合并数组并去重
mergeArray (arr1, arr2) {
var _arr = new Array()
for (var i = 0; i < arr1.length; i++) {
_arr.push(arr1[i])
}
for (var i = 0; i < arr2.length; i++) {
var flag = true
for (var j = 0; j < arr1.length; j++) {
if (arr2[i] === arr1[j]) {
flag = false
break
}
}
if (flag) {
_arr.push(arr2[i])
}
}
return _arr
},
