removechild | 易学教程

as3 hitTestObject() to hit all

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问题 In my game I have person who shoots and I need if the bullet hit somthing to delete the sprite. var i = 1; var f:Function; addChild(bullet); bullet.addEventListener(Event.ENTER_FRAME, f = function(){ bullet.x += movex*i; bullet.y += movey*i; i++; }); How to make hitTestObject() with everything? 回答1: There are a bunch of techniques for collision detection, however, the method to use depends on the target object's shape. Pixel perfect hittesting is the most accurate collision detection method,

Removing Parent in AS3: Does this free the memory used by all the children?

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问题 I'm making a rather large flash project and so I'm concerned about memory usage. At the end of each section of the application I remove the overarching parent element that holds the content. Although this remove the parent, does this also free up the memory for each of the children contained within this, or should I run an iteration to remove those prior to removing the parent? I'll give a little more explanation in-case I'm not expressing what I want: addChild(movie1); movie1.addChild(movie2

How do you remove and hide HTML elements in plain Javascript?

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问题 I have this HTML: <body> <div id="content-container" style="display:none"> <div>John</div> </div> <div id="verifying"> <div id="message">Verified</div> </div> </body> And this Javascript: var body = document.body; var signup = document.getElementById("content-container"); setTimeout(function(){ body.removeChild('verifying'); signup.style.display = "block"; }, 5000); I am trying to remove <div id="verifying"> and show <div id="content-container"> after 5 seconds, but for some reason it is not

Android: How do I remove an item from a gridview, having the remaing items shuffle into place

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问题 BACKGROUND: I have a grid of 36 buttons, lets say a 6 rows & 6 columns numbered 1 to 36, displayed 2 rows at a time via a GridView and custom Adapter The grid displays fine, and all of the scrolling works properly. QUESTION: I want to be able to click on an item, have it removed from the grid and the remain items shuffle up into place. Currently I am able to disable the item disabled, set its visibility to INVISIBLE or GONE, but none of these will actually remove it from the display.

Creating an element that can remove it self?

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问题 I'm building a lightbox as a school project, and I can't use jQuery. I've got an image. When you click it, Javascript makes a transparent div with the ID "overlay". I want the div to remove itself, or the parent to remove it but it doesn't work. I think it has to do with the fact that you cant link 'onclick' to an element that doesn't exists yet. 回答1: You have to remove the element from the parent. Something like this: d = document.getElementById('overlay'); d.parentNode.removeChild(d); Or

Deleting child nodes of a div node

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问题 I have following codes to remove child nodes of a div node. Are both of these codes correct? while(innerWindowContentBox.hasChildNodes()) innerWindowContentBox.removeChild(innerWindowContentBox.childNodes[0]); Other is innerWindowContentBox.innerHTML = ''; Note that the code is for a Greasemonkey script so IE support is not required. 回答1: Both bits of code will get the job done but use the DOM approach ( that is while(innerWindowContentBox.hasChildNodes() ... ). Advantages: It's quite a bit

Remove an item in RecyclerView- Android

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问题 I am facing a problem, I could not remove an Item in RecyclerView. I am trying to search in Internet, but could not see any solution I am following to this post Android RecyclerView addition & removal of items But I still could not remove the item selected Below is my code for my adapter and fragement RecyclerViewAdapter.java public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> { List<VideoDetails> contents2; Context mContext; ImageLoader imageLoader;

Deleting child nodes of a div node

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I have following codes to remove child nodes of a div node. Are both of these codes correct? while(innerWindowContentBox.hasChildNodes()) innerWindowContentBox.removeChild(innerWindowContentBox.childNodes[0]); Other is innerWindowContentBox.innerHTML = ''; Note that the code is for a Greasemonkey script so IE support is not required. Both bits of code will get the job done but use the DOM approach ( that is while(innerWindowContentBox.hasChildNodes() ... ). Advantages: It's quite a bit faster. See this speed comparison at jsperf.com . On the sample HTML (hundreds of nodes, each with event

Android: How do I remove an item from a gridview, having the remaing items shuffle into place

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BACKGROUND: I have a grid of 36 buttons, lets say a 6 rows & 6 columns numbered 1 to 36, displayed 2 rows at a time via a GridView and custom Adapter The grid displays fine, and all of the scrolling works properly. QUESTION: I want to be able to click on an item, have it removed from the grid and the remain items shuffle up into place. Currently I am able to disable the item disabled, set its visibility to INVISIBLE or GONE, but none of these will actually remove it from the display. Suggestions? Specifically, you need to remove the corresponding object from the data set of the underlying

removeChild sometimes removes entire span and sometimes doesn't

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I'm working on a rich text editor for iOS and have most of it working but running into endless problems ensuring that the cursor is visible in the viewport when the user starts typing. I came up with a novel approach: insert a span at the cursor position, scroll to the span, and then remove it. (I haven't gotten to only scrolling if the span is on-screen.) Here's what I wrote: document.addEventListener('keypress', function(e) { jumpToID(); }, false); function jumpToID() { var id = "jumphere2374657"; var text = "<span id='" + id + "'> </span>" document.execCommand('insertHTML', false, text);