好的，如果通过CSS在样式上设置了转换，只要样式没有被Javascript更改（然后转换停止），即使Javascript将原始属性恢复为其以前的值，它也能正常工作并继续工作。 / p>
有没有办法在风格被触及后恢复过渡＆＃34; ？
例如，一旦Javascript将宽度设置为值100px（这是CSS值），转换就会停止。
using UnityEngine;
using System;
using System.Collections.Generic;
using System.Text;
using UnityEngine.SceneManagement;
public delegate void CommandHandler(string[] args);
public class ConsoleController
{
#region Event declarations
// Used to communicate with ConsoleView
public delegate void LogChangedHandler(string[] log);
public event LogChangedHandler logChanged;
public delegate void VisibilityChangedHandler(bool visible);
public event VisibilityChangedHandler visibilityChanged;
#endregion
/// <summary>
/// Object to hold information about each command
/// </summary>
class CommandRegistration
{
public string command { get; private set; }
public CommandHandler handler { get; private set; }
public string help { get; private set; }
public CommandRegistration(string command, CommandHandler handler, string help)
{
this.command = command;
this.handler = handler;
this.help = help;
}
}
/// <summary>
/// How many log lines should be retained?
/// Note that strings submitted to appendLogLine with embedded newlines will be counted as a single line.
/// </summary>
const int scrollbackSize = 20;
Queue<string> scrollback = new Queue<string>(scrollbackSize);
List<string> commandHistory = new List<string>();
Dictionary<string, CommandRegistration> commands = new Dictionary<string, CommandRegistration>();
public string[] log { get; private set; } //Copy of scrollback as an array for easier use by ConsoleView
const string repeatCmdName = "!!"; //Name of the repeat command, constant since it needs to skip these if they are in the command history
public ConsoleController()
{
//When adding commands, you must add a call below to registerCommand() with its name, implementation method, and help text.
registerCommand("babble", babble, "Example command that demonstrates how to parse arguments. babble [word] [# of times to repeat]");
registerCommand("echo", echo, "echoes arguments back as array (for testing argument parser)");
registerCommand("help", help, "Print this help.");
registerCommand("hide", hide, "Hide the console.");
registerCommand(repeatCmdName, repeatCommand, "Repeat last command.");
registerCommand("reload", reload, "Reload game.");
registerCommand("resetprefs", resetPrefs, "Reset & saves PlayerPrefs.");
registerCommand("ver", ver, "Displays the current game version.");
registerCommand("buildver", buildver, "Displays the current build.");
registerCommand("sys", sys, "Displays basic system information.");
registerCommand("devinfo", devinfo, "Displays important developer information.");
}
void registerCommand(string command, CommandHandler handler, string help)
{
commands.Add(command, new CommandRegistration(command, handler, help));
}
public void appendLogLine(string line)
{
Debug.Log(line);
if (scrollback.Count >= ConsoleController.scrollbackSize)
{
scrollback.Dequeue();
}
scrollback.Enqueue(line);
log = scrollback.ToArray();
if (logChanged != null)
{
logChanged(log);
}
}
public void runCommandString(string commandString)
{
appendLogLine("$ " + commandString);
string[] commandSplit = parseArguments(commandString);
string[] args = new string[0];
if (commandSplit.Length < 1)
{
appendLogLine(string.Format("Unable to process command '{0}'", commandString));
return;
}
else if (commandSplit.Length >= 2)
{
int numArgs = commandSplit.Length - 1;
args = new string[numArgs];
Array.Copy(commandSplit, 1, args, 0, numArgs);
}
runCommand(commandSplit[0].ToLower(), args);
commandHistory.Add(commandString);
}
public void runCommand(string command, string[] args)
{
CommandRegistration reg = null;
if (!commands.TryGetValue(command, out reg))
{
appendLogLine(string.Format("Unknown command '{0}', type 'help' for list.", command));
}
else
{
if (reg.handler == null)
{
appendLogLine(string.Format("Unable to process command '{0}', handler was null.", command));
}
else
{
reg.handler(args);
}
}
}
static string[] parseArguments(string commandString)
{
LinkedList<char> parmChars = new LinkedList<char>(commandString.ToCharArray());
bool inQuote = false;
var node = parmChars.First;
while (node != null)
{
var next = node.Next;
if (node.Value == '"')
{
inQuote = !inQuote;
parmChars.Remove(node);
}
if (!inQuote && node.Value == ' ')
{
node.Value = '\n';
}
node = next;
}
char[] parmCharsArr = new char[parmChars.Count];
parmChars.CopyTo(parmCharsArr, 0);
return (new string(parmCharsArr)).Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
}
#region Command handlers
//Implement new commands in this region of the file.
/// <summary>
/// A test command to demonstrate argument checking/parsing.
/// Will repeat the given word a specified number of times.
/// </summary>
void babble(string[] args)
{
if (args.Length < 2)
{
appendLogLine("Expected 2 arguments.");
return;
}
string text = args[0];
if (string.IsNullOrEmpty(text))
{
appendLogLine("Expected arg1 to be text.");
}
else
{
int repeat = 0;
if (!Int32.TryParse(args[1], out repeat))
{
appendLogLine("Expected an integer for arg2.");
}
else
{
for (int i = 0; i < repeat; ++i)
{
appendLogLine(string.Format("{0} {1}", text, i));
}
}
}
}
void echo(string[] args)
{
StringBuilder sb = new StringBuilder();
foreach (string arg in args)
{
sb.AppendFormat("{0},", arg);
}
sb.Remove(sb.Length - 1, 1);
appendLogLine(sb.ToString());
}
void help(string[] args)
{
foreach (CommandRegistration reg in commands.Values)
{
appendLogLine(string.Format("{0}: {1}", reg.command, reg.help));
}
}
void hide(string[] args)
{
if (visibilityChanged != null)
{
visibilityChanged(false);
}
}
void repeatCommand(string[] args)
{
for (int cmdIdx = commandHistory.Count - 1; cmdIdx >= 0; --cmdIdx)
{
string cmd = commandHistory[cmdIdx];
if (String.Equals(repeatCmdName, cmd))
{
continue;
}
runCommandString(cmd);
break;
}
}
void reload(string[] args)
{
SceneManager.LoadScene(SceneManager.GetActiveScene().name);
}
void resetPrefs(string[] args)
{
PlayerPrefs.DeleteAll();
PlayerPrefs.Save();
}
void ver(string[] args)
{
appendLogLine("La Llorona 16w14~");
}
void buildver(string[] args)
{
appendLogLine("Build 040916.04");
}
void sys(string[] args)
{
appendLogLine(SystemInfo.operatingSystem);
appendLogLine(SystemInfo.processorType);
appendLogLine(SystemInfo.systemMemorySize.ToString());
appendLogLine(SystemInfo.graphicsDeviceName);
}
void devinfo(string[] args)
{
appendLogLine(SystemInfo.deviceModel);
appendLogLine(SystemInfo.deviceType.ToString());
appendLogLine(SystemInfo.graphicsDeviceName);
appendLogLine(SystemInfo.graphicsMemorySize.ToString());
}
#endregion
}
var el = document.getElementById("test");
el.style.width = "100px";div {
width: 100px;
height: 100px;
background: red;
-webkit-transition: width 2s; /* For Safari 3.1 to 6.0 */
transition: width 2s;
}
div:hover {
width: 300px;
}
答案 0 :(得分：2)
当您使用el.style.width = "100px"硬连接宽度时，会覆盖您的div:hover CSS规则，因此它将不再具有优先权。
您需要增加:hover CSS规则的优先级，以使其仍然生效。你可以通过多种方式做到这一点。一种方法是使用!important。通常情况下，我不喜欢使用!important，但在这种情况下，如果没有它，很难覆盖直接分配的样式的优先级。
div:hover {
width: 300px !important;
}
您可以阅读有关如何计算CSS特异性here以确定优先级的内容。不幸的是，直接分配的样式规则具有非常高的优先级。
这是一个有效的演示：
var el = document.getElementById("test");
el.style.width = "100px";div {
width: 100px;
height: 100px;
background: red;
-webkit-transition: width 2s; /* For Safari 3.1 to 6.0 */
transition: width 2s;
}
div:hover {
width: 300px !important;
}<div id="test"></div>
答案 1 :(得分：1)
它本身并没有停止，JavaScript只是将宽度放在具有最高特异性的内联CSS中（除了!important），因此悬停宽度不起作用，因为它的特异性较弱。一种解决方法是使用!important，但我不建议这样做。尝试删除JS样式或使用类转换
var el = document.getElementById("test");
el.style.width = "100px";div {
width: 100px;
height: 100px;
background: red;
-webkit-transition: width 2s; /* For Safari 3.1 to 6.0 */
transition: width 2s;
}
div:hover {
width: 300px !important;
}<div id="test"></div>