regex js for application [0] .customer_id

Question

我想知道如何用正则表达式获得这3个元素; 尽管知道非常基本的正则表达式，但当我遇到问题时

表达式有3个部分：

应用[0] .customer_id

1. 申请（在[
之前）
2. []
中的数字0
3. 字符串在[]
之后

我试过这个：

class GroupScreen(Screen):
    groupName = ObjectProperty(None)
    popup = ObjectProperty(None)
    abc = ObjectProperty(None)

    def display_groups(self, instance):
        self.abc    =   10
        print(self.abc)
        if len(instance.text) > 0:
            self.popup = TreeviewGroup(self.abc)
            self.popup.open()

class TreeviewGroup(Popup):
    treeview = ObjectProperty(None)
    tv = ObjectProperty(None)

    def __init__(self, **kwargs):
        super(TreeviewGroup, self).__init__(**kwargs)
        self.tv = TreeView(root_options=dict(text=""),
                           hide_root=False,
                           indent_level=4)


        cur.execute("SELECT * FROM `test` WHERE `id`=?", (abc,))
        rows = cur.fetchall()
        print(rows)
        # rows = [(1, 'test1'), (2, 'test2'), (3, 'test3')]
        tree = []

        for r in rows:
            tree.append({'node_id': r[1], 'children': []})
        for branch in tree:
            populate_tree_view(self.tv, None, branch)
        self.remove_widgets()
        self.treeview.add_widget(self.tv)

    def remove_widgets(self):
        for child in [child for child in self.treeview.children]:
            self.treeview.remove_widget(child)

但它不起作用。

Answer 1

使用群组()，然后您可以从match或replace返回每个群组。

＆＃13;

＆＃13;

var str = "application[0].customer_id";

var found = str.match(/(\w+)\[([0-9]+)\]\.(\w+)/);

console.log(found[1])
console.log(found[2])
console.log(found[3])

＆＃13;

＆＃13;

＆＃13;