Javascript 为什么我的事件处理程序只在chrome中工作?
我不明白为什么我的简单javascript应用程序可以在chrome中正常工作,但在firefox或internet explorer中却不行(注意:我只是个学生,所以请耐心等待,谢谢!) 在firefox和InternetExplorer中,我可以浏览和选择文本文件,但一旦选择,它就什么也不做,这就是为什么我认为事件处理程序是问题所在。我似乎找不到任何关于浏览器处理onchange事件的方式存在差异的信息 同时为了更全面和简洁,我将添加整个web应用程序,但我认为唯一相关的部分是main.js中的事件处理程序。我很确定问题出在那里,但我不是100%确定 编辑:Internet Explorer现在可以工作了。问题是脚本被阻止,因为它是本地文件。在Firefox中仍然不起作用,我也没有看到任何脚本被阻止的情况。它也不应该是任何插件,因为我只有3个:Lastpass、Chatzilla和Freemake视频下载程序 在Chrome中(应该如何工作): 在Firefox中(不工作): Firefox javascript控制台: HTML(frontend.HTML): } 文本文件(tictactoe.txt):Javascript 为什么我的事件处理程序只在chrome中工作?,javascript,html,Javascript,Html,我不明白为什么我的简单javascript应用程序可以在chrome中正常工作,但在firefox或internet explorer中却不行(注意:我只是个学生,所以请耐心等待,谢谢!) 在firefox和InternetExplorer中,我可以浏览和选择文本文件,但一旦选择,它就什么也不做,这就是为什么我认为事件处理程序是问题所在。我似乎找不到任何关于浏览器处理onchange事件的方式存在差异的信息 同时为了更全面和简洁,我将添加整个web应用程序,但我认为唯一相关的部分是main.js
我有一个解决方案,但它是拖放式的。你的IE版本需要什么?只有IE 10+支持它。其他浏览器中是否有错误?是否调用了
change
事件?请尝试注册reader.onerror
并查看是否有任何东西被触发?我们将立即查看这两个事件,一秒钟。@SuperScript-在Firefox中添加了Javascript控制台输出,但我没有看到任何有用的东西。可能没有回答你的问题。我怎么才能确定是否有人在打电话?其他浏览器的控制台上没有显示任何内容。好的,我发现在internet explorer中有一个框,上面说ActiveX控件被阻止了。当我启用它们时,它开始工作。Firefox仍然存在问题。这只是我用来学习的一个附带项目,所以我并不是真的在寻找另一个可行的解决方案,除非我了解我目前的问题以及为什么这个解决方案更好。谢谢你!
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<script src="main.js"></script>
</head>
<body>
<h1>Tic Tac Toe</h1>
<div>
Select a text file:
<input type="file" id="fileInput">
</div>
<pre id="fileDisplayArea"></pre>
window.onload = function() {
// Initialize associative array to store contents of the tic tac toe board.
var board = {
northwest_square: "", north_square: "", northeast_square: "",
west_square: "", center_square: "", east_square: "",
southwest_square: "", south_square: "", southeast_square: ""
};
// Read the file and store into string variable "fileStr"
var fileInput = document.getElementById('fileInput');
var fileDisplayArea = document.getElementById('fileDisplayArea');
fileInput.addEventListener('change', function(e) {
var file = fileInput.files[0];
var textType = /text.*/;
if (file.type.match(textType)) {
var reader = new FileReader();
reader.onload = function(e) {
var fileStr = reader.result.toLowerCase();
//remove whitespace
fileStr=fileStr.replace(/(\r\n|\n|\r)/gm,"");
//Store into the array
var i = 0;
for(var index in board){
board[index] = fileStr[i];
i++;
}
var winner = findWinner();
//Display board
fileDisplayArea.innerText += reader.result.toLowerCase();
//Display winner
switch(winner){
case "INVALID":
fileDisplayArea.innerText += "\n\nINVALID: File contents must be 'x', 'o', or '_'";
break;
case "INCOMPLETE":
fileDisplayArea.innerText += "\n\nINCOMPLETE: No winner found. Unused blocks exist.";
break;
case "TIE":
fileDisplayArea.innerText += "\n\nTIE: No winners found."
break;
}
if(winner != 'INVALID' && winner != "INCOMPLETE" && winner != "TIE"){
fileDisplayArea.innerText += "\n\nCongratulations player '" + winner + "'. You are the winner!";
}
}
reader.readAsText(file);
} else {
fileDisplayArea.innerText = "File not supported!";
}
});
//FUNCTION(S)
function findWinner(){
//check if contents are 'x', 'o' or '_';
for(var index in board){
if(board[index] != 'x'
&& board[index] != 'o'
&& board[index] != '_'){
return "INVALID";
}
}
// ROW1 (NW, N, NE)
if(board["northwest_square"] === board["north_square"]
&& board["northeast_square"] === board["north_square"]
&& board["north_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["north_square"];
}
// ROW2 (W, Center, E)
else if(board["west_square"] === board["center_square"]
&& board["east_square"] === board["center_square"]
&& board["center_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["center_square"];
}
// ROW3 (SW, S, SE)
else if(board["southwest_square"] === board["south_square"]
&& board["southeast_square"] === board["south_square"]
&& board["south_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["south_square"];
}
// COL1 (NW, W, SW)
else if(board["northwest_square"] === board["west_square"]
&& board["southwest_square"] === board["west_square"]
&& board["west_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["west_square"];
}
// COL2 (N, Center, S)
else if(board["north_square"] === board["center_square"]
&& board["south_square"] === board["center_square"]
&& board["center_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["center_square"];
}
// COL3 (NE, E, SE)
else if(board["northeast_square"] === board["east_square"]
&& board["southeast_square"] === board["east_square"]
&& board["east_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["east_square"];
}
// DIAG1 (NW, Center, SE)
else if(board["northwest_square"] === board["center_square"]
&& board["southeast_square"] === board["center_square"]
&& board["center_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["center_square"];
}
// DIAG2 (NE, Center, SW)
else if(board["northeast_square"] === board["center_square"]
&& board["southwest_square"] === board["center_square"]
&& board["center_square"] != '_'){
// If triple, then return contents (either 'x' or 'o')
return board["center_square"];
}
else if(board["northwest_square"] === '_'
|| board["north_square"] === '_'
|| board["northeast_square"] === '_'
|| board["west_square"] === '_'
|| board["center_square"] === '_'
|| board["east_square"] === '_'
|| board["southeast_square"] === '_'
|| board["south_square"] === '_'
|| board["southwest_square"] === '_'){
return "INCOMPLETE";
}
else{
return "TIE";
}
}
oxo
oox
xox