Question

我在这个例子中使用Datamaps。我有一个数据图，当在this.setState is not a function中单击时，会更改该部分的颜色。我还想在我的React状态中存储一个数字。但是，下面的代码会导致lemap:function(){ var map = new Datamap({ element: document.getElementById('maincontains'), scope: 'usa', fills: {defaultFill: 'rgb(217, 217, 217)'}, done: function(datamap) { datamap.svg.select('.datamaps-subunit.MI').on('click', function(geography) { var m = {}; var bis = this; m[geography.id] = 'pink'; datamap.updateChoropleth(m); this.setState({trumpnum: 12}); }); } }); },错误。

import boto.ec2
from boto.manage.cmdshell import sshclient_from_instance

# Connect to your region of choice
conn = boto.ec2.connect_to_region('us-west-2')

# Find the instance object related to my instanceId
instance = conn.get_all_instances(['i-12345678'])[0].instances[0]

# Create an SSH client for our instance
#    key_path is the path to the SSH private key associated with instance
#    user_name is the user to login as on the instance (e.g. ubuntu, ec2-user, etc.)
ssh_client = sshclient_from_instance(instance,
                                     '<path to SSH keyfile>',
                                     user_name='ec2-user')
# Run the command. Returns a tuple consisting of:
#    The integer status of the command
#    A string containing the output of the command
#    A string containing the stderr output of the command
status, stdout, stderr = ssh_client.run('ls -al')

Answer 1

通过在函数下方添加var sting = this来修复它。

lemap:function(){
var sting = this;
    var map = new Datamap({
        element: document.getElementById('maincontains'),
        scope: 'usa',
        fills: {defaultFill: 'rgb(217, 217, 217)'},
        done: function(datamap) {
            datamap.svg.select('.datamaps-subunit.MI').on('click', function(geography) {
                var m = {};
                var bis = this;
                m[geography.id] = 'pink';
                datamap.updateChoropleth(m);
                sting.setState({trumpnum: 12});
            });
        }
    }); 
},

使用datamaps反应setstate？

1 个答案: