Javascript 如何在jQuery中单击按钮调用函数
我在jQuery中编写了一段代码:Javascript 如何在jQuery中单击按钮调用函数,javascript,jquery,Javascript,Jquery,我在jQuery中编写了一段代码: <span id="counter-up" class="timer"> </span> <div class="buttons"> <button id="trigger">Result!</button> </div> </div> <div class="container"> </div> <script> var
<span id="counter-up" class="timer">
</span>
<div class="buttons">
<button id="trigger">Result!</button>
</div>
</div>
<div class="container">
</div>
<script>
var Numbers = 30;
function secondPassed() {
var random = Math.random() * 2024 + 10;
random = parseInt(random);
document.getElementById('counter-up').innerHTML = random;
if (Numbers == 0) {
clearInterval(countdownTimer);
document.getElementById('counter-up').innerHTML = "2024";
} else {
Numbers--;
}
}
var countdownTimer = setInterval('secondPassed()', 100);
</script>
结果!
变量数=30;
函数secondPassed(){
var random=Math.random()*2024+10;
random=parseInt(随机);
document.getElementById('counter-up')。innerHTML=random;
如果(数字==0){
清除间隔(倒计时);
document.getElementById('counter-up').innerHTML=“2024”;
}否则{
数字--;
}
}
var countdownTimer=setInterval('secondPassed()',100);
在该代码中,加载页面时调用函数
secondPassed
。我希望当我单击Id为trigger
的按钮时调用此函数。如何实现这一点?在元素上绑定事件并将处理程序作为函数引用传递
$('#trigger').click(secondPassed);
我还建议对setInterval函数使用非字符串回调
var countdownTimer = setInterval(secondPassed, 100);
setInterval
使用函数引用var编号=30,
倒计时;
var$counter=$(“#counter up”);
函数secondPassed(){
var random=parseInt(Math.random()*2024+10,10);
$counter.html(随机);
如果(数字==0){
清除间隔(倒计时);
$counter.innerHTML=“2024”;
}否则{
数字--;
}
}
倒计时=设置间隔(秒通过,100);
$(“#触发器”)。单击(函数(){
数字=30;
倒计时=设置间隔(秒通过,100);
});代码>
结果!
试试这个
<script>
$(function() {
$('#trigger').on('click', function() {
secondPassed();
});
});
var Numbers = 30;
function secondPassed() {
var random = Math.random() * 2024 + 10;
random = parseInt(random);
document.getElementById('counter-up').innerHTML = random;
if (Numbers == 0) {
clearInterval(countdownTimer);
document.getElementById('counter-up').innerHTML = "2024";
} else {
Numbers--;
}
}
var countdownTimer = setInterval(secondPassed(), 100);
</script>
$(函数(){
$('#trigger')。在('click',function()上{
第二次通过();
});
});
变量数=30;
函数secondPassed(){
var random=Math.random()*2024+10;
random=parseInt(随机);
document.getElementById('counter-up')。innerHTML=random;
如果(数字==0){
清除间隔(倒计时);
document.getElementById('counter-up').innerHTML=“2024”;
}否则{
数字--;
}
}
var countdownTimer=setInterval(secondPassed(),100);
尝试执行以下操作:
$(document).ready(function(){
secondPassed();//after document ready
$('#trigger').on('click',function(){
secondPassed();//onclick of button
});
});
D=文件
$(D).就绪(函数(){
$(“#触发器”)。单击(函数(){
变量数=30;
var random=Math.random()*2024+10;
random=parseInt(随机);
document.getElementById('counter-up')。innerHTML=random;
如果(数字==0){
清除间隔(倒计时);
document.getElementById('counter-up').innerHTML=“2024”;
}否则{
数字--;
}
});
});
我希望它能起作用,但所有答案都很接近,我想:D我想在页面第一次加载时做这两件事,然后它应该工作,在按钮单击后,此函数应该加载,并且在控制台中获得错误secondPassed未定义引用错误:secondPassed未定义
<script>
D = document
$(D).ready(function() {
$("#trigger").click(function() {
var Numbers = 30;
var random = Math.random() * 2024 + 10;
random = parseInt(random);
document.getElementById('counter-up').innerHTML = random;
if (Numbers == 0) {
clearInterval(countdownTimer);
document.getElementById('counter-up').innerHTML = "2024";
} else {
Numbers--;
}
});
});
</script>