首先调用函数javascript
[英]Call function javascript first second
问题描述
I want to make it so that on a first click i call one function for javascript, and on a second click i call another function for javascript. 
我想这样做，以便在第一次点击时我调用一个javascript函数，然后在第二次点击我调用另一个函数为javascript。 How can that be? 怎么可能？
Basically i press on this image, it calls this function, if i press it again it calls another function. 基本上我按下这个图像，它调用这个功能，如果我再次按它它会调用另一个功能。 First then second. 先是第二个。
Using html 使用HTML
5 个解决方案
解决方案1
13 已采纳 2011-11-24 04:58:52
<script>
var clicked = false;
function doSomething()
{
if(clicked)
{
alert(2);
}
else
{
alert(1);
}
clicked = !clicked;
}
</script>
</head>
<body>
<p id="hello" onClick="doSomething();">Hello World</p>
</body>
See exmple here http://jsbin.com/uzivuj 请参见http://jsbin.com/uzivuj
解决方案2
2 2011-11-24 04:58:11
First, you mean JavaScript. 首先，你的意思是JavaScript。
Basically, in the first event handler, you want to remove it, then assign the new one: 基本上，在第一个事件处理程序中，您要删除它，然后分配新的：
function foo()
{
// Other work
this.removeEventListner("click", foo, false);
this.addEventListener("click", bar, false);
}
function bar()
{
}
element.addEventListener("click", foo, false);
解决方案3
0 2011-11-24 05:00:57
This will alternate between calling first() and second() each time the button is clicked. 每次单击按钮时，它将在调用first()和second()之间切换。
<input type="button" id="mybutton" value="Click me" />
<script>
function first() { alert("first"); }
function second() { alert("second"); }
var toggleFlag = true;
$("#mybutton").click(function() {
toggleFlag ? first() : second();
toggleFlag = !toggleFlag;
});
</script>
解决方案4
0 2011-11-24 05:04:17
Hope this help you 希望这对你有所帮助
<a href=# onclick="onClickEvent()">
<img src="[Src]" width="208" height="58" >
</a>
var count = 0;
function function1(){
alert("Function 1");
count++;
}
function function2(){
alert("Function 2");
count = 0;
}
function onClickEvent(){
if(count ==0){
function1();
}else{
function2();
}
}
解决方案5
-3 2017-05-03 07:54:09
Try This 尝试这个
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("#mybutton").click(function(){
$("p").toggle();
});`enter code here`
});
</script>
<h2>This is a heading</h2>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<input type="button" id="mybutton" value="Click me to show" />
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