dom-manipulation

问题 I\'m just trying to do this from the chrome console on Wikipedia. I\'m placing my cursor in the search bar and then trying to do document.activeElement.innerHTML += \"some text\" but it doesn\'t work. I googled around and looked at the other properties and attributes and couldn\'t figure out what I was doing wrong. The activeElement selector works fine, it is selecting the correct element. Edit : I just found that it\'s the value property. So I\'d like to change what I\'m asking. Why doesn\'t

问题 I have a text input and I don\'t want to allow users to use spaces, and everything typed will be turned into lowercase. I know I\'m not allowed to use filters on ng-model eg. ng-model=\'tags | lowercase | no_spaces\' I looked at creating my own directive but adding functions to $parsers and $formatters didn\'t update the input, only other elements that had ng-model on it. How can I change the input of that I\'m currently typing in? I\'m essentially trying to create the \'tags\' feature that

问题 I have an element that already has a class: <div class=\"someclass\"> <img ... id=\"image1\" name=\"image1\" /> </div> Now I want to create a JavaScript function that will add a class to the div (not replace, but add). How can I do that? 回答1: Add a space plus the name of your new class to the className property of the element. First, put an id on the element so you can easily get a reference. <div id="div1" class="someclass"> <img ... id="image1" name="image1" /> </div> Then var d = document