<h3>請單擊“提交”，測試提交按鈕的單擊事件也被觸發了。</h3>
<button id="btn">提交</button>
<form action="#" method="get" id="form">
<input type="text" name="site" value="www.woiweb.net" readonly/>
<input id="subbtn" type="submit" value="先別點擊此按鈕提交" onclick="alert('我已經提交了');"/>
</form>

<script type="text/javascript">
var sub = document.getElementById("subbtn");
var btn = document.getElementById("btn");
//通用方法
btn.onclick = function() {
sub.click();
}
</script>

<h3>請單擊“提交”，測試提交按鈕的單擊事件也被觸發了。</h3>
<button id="btn">提交</button>
<form action="#" method="get" id="form">
<input type="text" name="site" value="www.woiweb.net" readonly/>
<!--<input id="subbtn" type="submit" value="先別點擊此按鈕提交" onclick="alert('我已經提交了');"/> -->
<a id="subbtn" href="javascript:;" onclick="alert('在此調用提交表單的方法')">模擬提交按鈕</a>
</form>

<script type="text/javascript">
var sub = document.getElementById("subbtn");
var btn = document.getElementById("btn");
//通用方法
btn.onclick = function() {
sub.click();
}
</script>

<script type="text/javascript">
var sub = document.getElementById("subbtn");
var btn = document.getElementById("btn");
//通用方法
btn.onclick = function() {
//sub.click();
if (/msie/i.test(navigator.userAgent)) //IE
{
sub.fireEvent("onclick");
} else {
var e = document.createEvent('MouseEvent');
e.initEvent('click', false, false);
sub.dispatchEvent(e);
}
}
</script>