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i have this assignment running good but stuck on where i have to reset values. i have tried .removeEventListener which doesn't work the way i want it and also i don't wanna reload the page. Below are my codes...
Html
<!DOCTYPE html>
<html>
<head>
<title>Table Soccer Teams</title>
<link rel="stylesheet" type="text/css" href="soccer.css" />
<script type="text/javascript" src="table_soccer.js" ></script>
</head>
<body>
<a id="reset" href ="#" class="btn" >Reset</a>
<div id="soccer_field">
<div class="players" onsubmit="return(validateForm ());">
<h2>Possible Players</h2>
<ul id="first">
<li class="list-item">Player 1</li>
<li class="list-item">Player 2</li>
<li class="list-item">Player 3</li>
<li class="list-item">Player 4</li>
<li class="list-item">Player 5</li>
<li class="list-item">Player 6</li>
<li class="list-item">Player 7</li>
<li class="list-item">Player 8</li>
</ul>
<p class="three">Click on names above to select player </p>
</div>
<div class="actual_players">
<h3>Actual Players</h3>
<ul id="actual-players" ></ul>
<p class="two">Click button below to generate Teams</p>
<a id="generate" href ="#" class="btn">Click here</a>
</div>
<div class="teams">
<h1>Teams</h1>
<h4>Team 1</h4>
<p id="forward-one"><span>Forward:</span></p>
<p id="defender-one"><span>Defender:</span></p>
<h5>Team 2 </h5>
<p id="forward-two"><span>Forward:</span></p>
<p id="defender-two"><span>Defender:</span></p>
</div>
</div>
</body>
</html>
Javascript
function init(){
var listItems = document.getElementsByClassName("list-item");
for(var i=0; i<listItems.length; i++){
listItems[i].addEventListener("click", function(){
var text = this.innerHTML;
var liElement = document.createElement("LI");
liElement.ClassName = "test";
var text = document.createTextNode(text);
liElement.appendChild(text);
var lis = document.getElementById("actual-
players").getElementsByTagName("li");
if (lis.length == 4){
alert("Don't let more than four players");
} else {
document.getElementById("actual-
players").appendChild(liElement);
this.remove();
}
});
}
document.getElementById("generate").addEventListener("click",
function(){
var temp = [];
var t = document.getElementById("actual-
players").getElementsByTagName("li");
for(var i=0; i<t.length; i++){
temp.push(t[i]);
}
var x = temp.length;
if (x < 4 || x == null) {
alert("Actual players field must not be empty or have less
than 4 players");
return false;
}
var positions = ["forward-one", "defender-one", "forward-two",
"defender-two"];
for (var i = 0; i < 4; i++){
var index = Math.floor(Math.random()*temp.length);
var player = temp[index];
document.getElementById(positions[i]).appendChild(player);
temp.splice(index, 1);
}
});
Below is where i wanna write my reset codes... i want the distributed players to be removed when reset is clicked...
document.getElementById("reset").addEventListener("click", function()
{
});
i have this assignment running good but stuck on where i have to reset values. i have tried .removeEventListener which doesn't work the way i want it and also i don't wanna reload the page. Below are my codes...
Html
<!DOCTYPE html>
<html>
<head>
<title>Table Soccer Teams</title>
<link rel="stylesheet" type="text/css" href="soccer.css" />
<script type="text/javascript" src="table_soccer.js" ></script>
</head>
<body>
<a id="reset" href ="#" class="btn" >Reset</a>
<div id="soccer_field">
<div class="players" onsubmit="return(validateForm ());">
<h2>Possible Players</h2>
<ul id="first">
<li class="list-item">Player 1</li>
<li class="list-item">Player 2</li>
<li class="list-item">Player 3</li>
<li class="list-item">Player 4</li>
<li class="list-item">Player 5</li>
<li class="list-item">Player 6</li>
<li class="list-item">Player 7</li>
<li class="list-item">Player 8</li>
</ul>
<p class="three">Click on names above to select player </p>
</div>
<div class="actual_players">
<h3>Actual Players</h3>
<ul id="actual-players" ></ul>
<p class="two">Click button below to generate Teams</p>
<a id="generate" href ="#" class="btn">Click here</a>
</div>
<div class="teams">
<h1>Teams</h1>
<h4>Team 1</h4>
<p id="forward-one"><span>Forward:</span></p>
<p id="defender-one"><span>Defender:</span></p>
<h5>Team 2 </h5>
<p id="forward-two"><span>Forward:</span></p>
<p id="defender-two"><span>Defender:</span></p>
</div>
</div>
</body>
</html>
Javascript
function init(){
var listItems = document.getElementsByClassName("list-item");
for(var i=0; i<listItems.length; i++){
listItems[i].addEventListener("click", function(){
var text = this.innerHTML;
var liElement = document.createElement("LI");
liElement.ClassName = "test";
var text = document.createTextNode(text);
liElement.appendChild(text);
var lis = document.getElementById("actual-
players").getElementsByTagName("li");
if (lis.length == 4){
alert("Don't let more than four players");
} else {
document.getElementById("actual-
players").appendChild(liElement);
this.remove();
}
});
}
document.getElementById("generate").addEventListener("click",
function(){
var temp = [];
var t = document.getElementById("actual-
players").getElementsByTagName("li");
for(var i=0; i<t.length; i++){
temp.push(t[i]);
}
var x = temp.length;
if (x < 4 || x == null) {
alert("Actual players field must not be empty or have less
than 4 players");
return false;
}
var positions = ["forward-one", "defender-one", "forward-two",
"defender-two"];
for (var i = 0; i < 4; i++){
var index = Math.floor(Math.random()*temp.length);
var player = temp[index];
document.getElementById(positions[i]).appendChild(player);
temp.splice(index, 1);
}
});
Below is where i wanna write my reset codes... i want the distributed players to be removed when reset is clicked...
document.getElementById("reset").addEventListener("click", function()
{
});
2 Answers
Reset to default 2Here is the doc of element.removeEventListener
Try to pass a named function (not an anonymous one) to addEventListener and removeEventListener.
var generate_element = document.getElementById("generate");
var generate_func = function(){...};
generate_element.addEventListener("click",generate_func);
// and later in your code
generate_element.removeEventListener("click",generate_func);
Removing the event listener will not change the DOM tree itself. You can either populate it using an id and use
document.removeChild(document.getElementById("yourId"))
but then you need to keep track of "yourId" when creating it. -In case you will need this value later it could make sense.
OR you can simply clear the content:
document.getElementById("forward-one").innerHTML = "<p id='forward-one'><span>Forward:</span></p>";
but in that case make it nicer and move the id to a div in html:
<p><span>Forward:</span><div id="forward-one">Apa, www</div></p>
and then use:
document.getElementById("forward-one").innerHTML = "";
本文标签： htmlHow to reset with an eventListener in JavascriptStack Overflow
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