<script src="../cgi-bin/delscript.js" defer></script>
中的defer作用是文檔加載完畢了再執(zhí)行腳本,這樣回避免找不到對(duì)象的問題---有點(diǎn)問題
<button id="myButton" onclick="alert('ok')">test</button>
<script>
myButton.click();
</script>
<script>
myButton.click();
</script>

<button id="myButton" onclick="alert('ok')">test</button>
<script defer>
function document.body.onload() {
alert(document.body.offsetHeight);
}
</script>