我已经接近完成一个项目,但是在尝试将按钮链接到我的功能时,我陷入了困境。我已经成功编辑了菜单,但是我需要按钮来链接到我创建的功能。
例如,当我查看
<a href="#">Add a side to your Dice</a>
<a href="#">Remove a side to your Dice</a>
<a href="#">Add an additional Roll</a>
我将如何添加功能,以便它们实际执行某些操作?
onClick="promoteDice()
onClick="demoteDice()
onClick="addRoll()
与标签相同:
<a href="#roll">Roll</a>
<a href="#exit">Exit</a>
我看不到应该在哪里添加该功能,因此它可以正常工作。
这是我实际的骰子游戏,仅供参考,我不需要您加入我的脚本,我只是需要有关该问题的帮助。
<!DOCTYPE html>
<html>
<body>
<input type="button" value="Roll The Dice" onClick="rollDice()" />
<input type="button" value="Upgrade The Dice" onClick="upgradeDice()" />
<input type="button" value="Quit" onClick="quit()" />
<script>
var myscore = 0;
var housescore = 0;
var dicesides = 6;
var diceroll = 1
function rollDice() {
var x = Math.floor(Math.random() * dicesides) + 1;
var y = Math.floor(Math.random() * dicesides) + 1;
var total = x + y;
msg = "You rolled " + x + ", " + y + " = " + total + "\n";
if (total != 11 && total < 7 && x != y) {
housescore += 1;
msg += "Even Up";
} else if (total != 11 && total > 7 && x != y) {
myscore += 1;
msg += "Player Up";
}
if (total == 7 || total == 11) {
housescore += 10;
msg += "CRAPS";
} else if (x == y) {
if (x % 2 == 0) {
myscore += 10;
msg += "Even Up";
} else {
housescore += 10;
msg += "Odd Ball";
}
}
msg += " Your Score is " + "Player: " + myscore + ", House: " + housescore;
alert(msg);
didIwin();
}
function didIwin() {
if (housescore >= 100) {
alert ("Sorry the house won the game!");
} else if (playerscore >= 100) {
alert ("Congratulations you won the game!");
}
myscore = 0;
housescore = 0;
dicesides = 6;
}
function upgradeDice() {
if (myscore >= 10) {
dicesides += 1;
alert ("Your Dice now have " + dicesides + " sides");
} else {
difference = 10 - myscore;
alert ("You need "+difference+" more points");
}
}
function quit() {
alert (" Your Score is " + "Player: " + myscore + ", House: " + housescore);
myscore = 0;
housescore = 0;
dicesides = 6;
}
</script>
</body>
</html>
最后这是我要合并功能的菜单代码:
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
.navbar {
overflow: hidden;
background-color: #333;
font-family: Arial, Helvetica, sans-serif;
}
.navbar a {
float: left;
font-size: 16px;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.dropdown {
float: left;
overflow: hidden;
}
.dropdown .dropbtn {
cursor: pointer;
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
.navbar a:hover, .dropdown:hover .dropbtn, .dropbtn:focus {
background-color: red;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}
.dropdown-content a {
float: none;
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.dropdown-content a:hover {
background-color: #ddd;
}
.show {
display: block;
}
</style>
</head>
<body>
<div class="navbar">
<a href="#roll">Roll</a>
<a href="#exit">Exit</a>
<div class="dropdown">
<button class="dropbtn" onclick="myFunction()">Upgrade
<i class="fa fa-caret-down"></i>
</button>
<div class="dropdown-content" id="myDropdown">
<a href="#">Add a side to your Dice</a>
<a href="#">Remove a side to your Dice</a>
<a href="#">Add an additional Roll</a>
</div>
</div>
</div>
<h3>Dropdown Menu inside a Navigation Bar</h3>
<p>Click on the "Dropdown" link to see the dropdown menu.</p>
<script>
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}
// Close the dropdown if the user clicks outside of it
window.onclick = function(e) {
if (!e.target.matches('.dropbtn')) {
var myDropdown = document.getElementById("myDropdown");
if (myDropdown.classList.contains('show')) {
myDropdown.classList.remove('show');
}
}
}
</script>
</body>
</html>
答案 0 :(得分:1)
您可以像之前示例中一样添加函数,而实际上您是否在子菜单中或其他内容都没有关系。
只需将onclick
属性和函数添加到要触发执行的HTML标记中,就可以了。
在我的示例中,我将功能myFunc();
添加到了骰子子菜单的添加端,但是您可以在其余HTML标签中添加任何逻辑和任何其他内容,这只是一个示例。
请注意:函数myFunc();
中的代码可以更改为任何内容。
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
.navbar {
overflow: hidden;
background-color: #333;
font-family: Arial, Helvetica, sans-serif;
}
.navbar a {
float: left;
font-size: 16px;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
.dropdown {
float: left;
overflow: hidden;
}
.dropdown .dropbtn {
cursor: pointer;
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 14px 16px;
background-color: inherit;
font-family: inherit;
margin: 0;
}
.navbar a:hover, .dropdown:hover .dropbtn, .dropbtn:focus {
background-color: red;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}
.dropdown-content a {
float: none;
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.dropdown-content a:hover {
background-color: #ddd;
}
.show {
display: block;
}
</style>
</head>
<body>
<div class="navbar">
<a href="#roll">Roll</a>
<a href="#exit">Exit</a>
<div class="dropdown">
<button class="dropbtn" onclick="myFunction()">Upgrade
<i class="fa fa-caret-down"></i>
</button>
<div class="dropdown-content" id="myDropdown">
<a href="#" onclick="myFunc();">Add a side to your Dice</a>
<a href="#">Remove a side to your Dice</a>
<a href="#">Add an additional Roll</a>
</div>
</div>
</div>
<h3>Dropdown Menu inside a Navigation Bar</h3>
<p>Click on the "Dropdown" link to see the dropdown menu.</p>
<script>
function myFunc() {
alert('You clicked a submenu item')
}
/* When the user clicks on the button,
toggle between hiding and showing the dropdown content */
function myFunction() {
document.getElementById("myDropdown").classList.toggle("show");
}
// Close the dropdown if the user clicks outside of it
window.onclick = function(e) {
if (!e.target.matches('.dropbtn')) {
var myDropdown = document.getElementById("myDropdown");
if (myDropdown.classList.contains('show')) {
myDropdown.classList.remove('show');
}
}
}
</script>
</body>
</html>
答案 1 :(得分:0)
您只需将onclick添加到链接中,如下所示:
<a href="#" onclick="promoteDice()">Add a side to your Dice</a>
<a href="#" onclick="demoteDice()">Remove a side to your Dice</a>
<a href="#" onclick="addRoll()">Add an additional Roll</a>
您可能还想使用<button type="button" onclick="addRoll()">Add Roll</button>
来代替,因为<a>
标签仅在链接到某物时使用。