所以我有一个import configureMockStore from "redux-mock-store";
import thunk from "redux-thunk";
import * as jobActions from "../../../app/javascript/actions/JobActions"
import { findAction } from '../support/redux_store'
import * as JobActionTypes from '../../../app/javascript/constants/JobActionTypes'
import fixtures_jobs_unscheduled_success from '../fixtures/jobs_unscheduled_success'
import moxios from "moxios";
export const mockStore = configureMockStore([thunk]);
let store;
describe ('loadUnassignedJobs', () => {
context('when bad parameters are passed', async () => {
it('will raise an error', () => {
const store = mockStore();
expect(() => {
store.dispatch(jobActions.loadUnassignedJobs('wrong_type'));
}).to.throw('Job Type must be "unscheduled" or "overdue".');
});
});
context('when unscheduled is passed', () => {
beforeEach(() => {
moxios.install();
console.log("before each called");
console.log(moxios.requests);
store = mockStore();
store.clearActions();
});
afterEach(() => {
console.log("after each called");
console.log(moxios.requests);
moxios.uninstall();
});
context('on success', () => {
beforeEach(() => {
moxios.wait(() => {
let request = moxios.requests.mostRecent();
request.respondWith({
status: 200,
response: fixtures_jobs_unscheduled_success
});
});
})
it('dispatches LOAD_UNASSIGNED_JOBS_STARTED', () => {
store.dispatch(jobActions.loadUnassignedJobs('unscheduled')).then(() => {
expect(findAction(store, JobActionTypes.LOAD_UNASSIGNED_JOBS_STARTED)).to.be.eql({
type: JobActionTypes.LOAD_UNASSIGNED_JOBS_STARTED,
job_type: 'unscheduled'
});
});
});
it('dispatches updateUnassignedJobs()', () => {
store.dispatch(jobActions.loadUnassignedJobs('unscheduled')).then(() => {
expect(findAction(store,JobActionTypes.LOAD_UNASSIGNED_JOBS_SUCCESS)).to.be.eql(jobActions.updateUnassignedJobs(fixtures_jobs_unscheduled_success.jobs))
});
});
});
context('on error', () => {
beforeEach(() => {
//console.log("before each on error called");
//console.log(moxios.requests);
moxios.wait(() => {
console.log('after waiting for moxios..')
console.log(moxios.requests);
let request = moxios.requests.mostRecent();
request.respondWith({
status: 500,
response: { error: 'internal server error' }
});
});
})
it('dispatches LOAD_UNASSIGNED_JOBS_FAILURE', (done) => {
console.log(moxios.requests);
store.dispatch(jobActions.loadUnassignedJobs('unscheduled')).then(() => {
console.log(moxios.requests);
console.log(store.getActions());
expect(findAction(store, JobActionTypes.LOAD_UNASSIGNED_JOBS_FAILURE)).to.include({
type: JobActionTypes.LOAD_UNASSIGNED_JOBS_FAILURE
});
expect(findAction(store, JobActionTypes.LOAD_UNASSIGNED_JOBS_FAILURE).error).to.include({
message: 'Request failed with status code 500'
});
done();
});
});
it('does not dispatch LOAD_UNASSIGNED_JOBS_SUCCESS', (done) => {
store.dispatch(jobActions.loadUnassignedJobs('unscheduled')).then(() => {
expect(findAction(store, JobActionTypes.LOAD_UNASSIGNED_JOBS_SUCCESS)).to.be.undefined;
done();
});
});
})
});
});
describe('updateUnassignedJobs', () => {
it('assigns jobs to hash and creates an unassigned_job_ids array', () => {
expect(jobActions.updateUnassignedJobs([ { id: 1, step_status: 'all_complete' }, { id: 2, step_status: 'not_started' } ])).to.be.eql(
{
type: JobActionTypes.LOAD_UNASSIGNED_JOBS_SUCCESS,
jobs: { 1: { id: 1, step_status: 'all_complete' }, 2: { id: 2, step_status: 'not_started' } },
unassigned_job_ids: [ 1,2 ]
}
)
});
});
标签和一个<img>来源，我需要对其应用颜色更改。我在CSS中尝试了.png属性，但显然IE不支持该属性。我可以使用JavaScript知道吗？
答案 0 :(得分：0)
也许您可以通过两种方式实现这一目标：
通过使用不同的png源文件，在事件发生时对其进行更改：
使用纯JavaScript：
var image = document.getElementById("my_image");
image.src = "image_1.jpg";
使用jQuery：
$("#my_image").attr("src","image1.jpg");
通过为您的png透明显示在其下方应用的background-color：
使用纯JavaScript：
var image = document.getElementById("my_image");
image.style.backgroundColor = "#0000ff"; // or "blue" or "rgba(0, 0, 255, 1.0)"
使用jQuery：
$("#my_image").css({ "background-color" : "#0000ff"});
欢呼