html

问题 I am trying to assign a click event handler to dynamically created buttons that once clicked, will return the ID of the clicked button in vanilla Javascript without any frameworks. Yet I can't seem to get the events to handle properly, here's the code let h = document.getElementsByClassName("buttons"); h.forEach(function() { addEventListener("click", function() { alert(this.id); }); }; 回答1: Try let h = document.getElementsByClassName("buttons"); [...h].forEach(b => { b.addEventListener("click

问题 I am trying create an input element from typescript to html in angular 4. But when I try put [(ngModel)] not works. How I do that method ? Someone know how ? createElement() { this.input = document.createElement('input'); this.input.setAttribute('matInput', ''); this.input.setAttribute('placeholder', 'Tema'); this.input.setAttribute('[(ngModel)]', 'module.theme'); this.input.setAttribute('name', 'theme'); return (<HTMLDivElement>(document.getElementById('ejemplo').appendChild(this.input))); }

问题 I've got a page with a embedded Youtube video in a iframe. I want to set the video to full screen whenever someone plays the video. I've tried many things but can't seem to get it working. My code: <div class="video-wrapper"> <div class="video"> <iframe id="home-video" allowfullscreen="allowfullscreen" mozallowfullscreen="mozallowfullscreen" msallowfullscreen="msallowfullscreen" oallowfullscreen="oallowfullscreen" webkitallowfullscreen="webkitallowfullscreen" frameborder="0" src="https://www

问题 I have been trying for three days, but I could not figure out the mistakes because the code is correct, but its implementation is not what I want. i am using three tables State,City and Donator,i want donator to select it's state and city when select state it display the specified city but when save its informatio the cityId don't save as in the image as at the end. i use ap.net mvc 5 code first. any one can help and tell me how to solve this problem the following my Models,Controller,and

问题 I am trying to extract the price data (high and low) from the 3rd table (corn). The code is return "None": import urllib2 from bs4 import BeautifulSoup import time import re start_urls = 4539 nb_quotes = 10 for urls in range (start_urls, start_urls - nb_quotes, -1): start_time = time.time() # construct the URLs strings url = 'http://markets.iowafarmbureau.com/markets/fixed.php?page=egrains' # Read the HTML page content page = urllib2.urlopen(url) # Create a beautifulsoup object soup =

问题 I am trying to extract the price data (high and low) from the 3rd table (corn). The code is return "None": import urllib2 from bs4 import BeautifulSoup import time import re start_urls = 4539 nb_quotes = 10 for urls in range (start_urls, start_urls - nb_quotes, -1): start_time = time.time() # construct the URLs strings url = 'http://markets.iowafarmbureau.com/markets/fixed.php?page=egrains' # Read the HTML page content page = urllib2.urlopen(url) # Create a beautifulsoup object soup =

问题 I'm looking to make a very simple dropdown menu for a navbar, very similar to how Bootstrap's dropdown menu works - without being Bootstrap (with some regular links in my navbar and some dropdown links). Essentially what I want is to come up with some with some js and probably a little bit of CSS that will enable this to happen for the following HTML code: <ul class="main-nav"> <li><a href="index.html">HOME</a></li> <li><a href="contact.html">CONTACT</a></li> <li class="dropdown"> <a href="#"

问题 So I have a DOM element that looks like this: <span>text</span> <b>some more text</b> even more text here <div>maybe some text here</div> My question is how do I swap text for candy so it looks like this: <span>text</span> <b>some more text</b> even more *candy* here <div>maybe some text here</div> I've tried a .replace with regex already but it swaps all the text occurrences. Also I do not know where the text without tags will be. It could be in the middle at the beginning or at the end,

问题 I want my background image to cover my whole web page but it keeps on repeating. Is there a way to set it to non-repetition via HTML? 回答1: You can't. First of all, background is an obsolete attribute. Browsers still support it. Second, it is not part of HTML5, as you can see in the list of attributes of the body element (see also global attributes). Which also you are not using HTML5, stop pretending you are. And finally, there never was an attribute to control how the background repeats. At

问题 I've been sat here for 2 hours simply tring to align my logo with the navigation bar so it all fits on one line similar too http://weightshift.com/ Im trying too add this image http://imageshack.us/photo/my-images/26/logonkg.png/ to align with the navigation bar im using which uses the following CSS, and am really stuck everytime i try to align it the nav bar goes below the header, im creating this on dreamweaver using the responsive framework, help would be greatly appreciated. #menu {