首先,这是我的代码。
var size = 400
function createGrid(size) {
$("#create").click(function() {
for (i = 0; i <= size; i++) {
$("#container").append('<div class="grid"> </div>');
}
});
}
$(document).ready(createGrid);
#container {
top: 10px;
position: relative;
width: 960px;
height: 960px;
border-color: black;
margin: auto;
outline: 2px solid black;
}
.grid {
display: inline-block;
border: 1px solid white;
background-color: black;
float: left;
width: 10px;
height: 10px;
}
<!DOCTYPE html>
<html>
<title>
Sam's Etcha Sketch
</title>
<head>
<link type="text/css" rel="stylesheet" href="stylesheet.css">
</head>
<body>
<div>
<button id="create">Create!</button>
</div>
<div id="container"></div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="script.js"></script>
</body>
</html>
我的目标是在点击#container
按钮后在#create
内创建方形div。我不介意它现在看起来有多丑,我只想点击按钮添加方块(这不是现在的结果)。我检查了JS Bin和我的浏览器控制台是否有任何错误或错误,但我似乎找不到任何错误。不知道我做错了什么,因为我在按钮上尝试了一个简单的FadeOut函数,它似乎不起作用,所以也许这就是我放入HTML的方式? (我也试过把它放在里面。)
TL; DR
我的代码导致我的click()
函数没有在容器中附加任何方格div,这有什么问题?
答案 0 :(得分:1)
试试这个我在你的剧本中做了一些改变
$(document).ready(function(){
var size = 400
function createGrid(size) {
$("#create").click(function() {
for (i = 0; i <= size; i++) {
$("#container").append($('<div class="grid"/>'));
}
});
}
createGrid(size)
});
&#13;
#container {
top: 10px;
position: relative;
width: 960px;
height: 960px;
border-color: black;
margin: auto;
outline: 2px solid black;
}
.grid {
display: inline-block;
border: 1px solid white;
background-color: black;
float: left;
width: 10px;
height: 10px;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<title>
Sam's Etcha Sketch
</title>
<head>
<link type="text/css" rel="stylesheet" href="stylesheet.css">
</head>
<body>
<div>
<button id="create">Create!</button>
</div>
<div id="container"></div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script src="script.js"></script>
</body>
</html>
&#13;
答案 1 :(得分:1)
您永远不会将size
传递给createGrid
这是你的代码。
// the outer "size" variable
var size = 400
// this creates a new "size" variable which shadows the outer one
function createGrid(size) {
$("#create").click(function() {
for (i = 0; i <= size; i++) {
$("#container").append('<div class="grid"> </div>');
}
});
}
// this passes "createGrid" to the event handler, which calls it without any argument
$(document).ready(createGrid);
以下是如何操作:
// this generates an event handler with a custom "size" in its scope
function getGridCreator(container, size) {
return function () {
$("#create").click(function() {
for (i = 0; i <= size; i++) {
$(container).append('<div class="grid"> </div>');
}
});
};
}
// this passes the grid creator to the event handler, which again calls
// it without any argument, but this time "size" is in scope
$(document).ready(getGridCreator("#container", 400));
作为一般性提示:避免使用全局变量,而是使用函数参数和闭包。