2
有时空。我的相关代码如下。的document.getElementById尽管使用我有一个问题，是的document.getElementById有时尽管使用的window.onload返回null（在10-20一次）的window.onload
ptp.html：
<body>
<div msa-include-html="msa.html"></div>
<script type="text/javascript" src="msa.js"></script>
<script type="text/javascript">
includeHTML();
</script>
<script type="text/javascript">
window.onload = function() {
initForm("urlAction");
}
</script>
</body>
msa.html：
<form id="msa" method="get">
<input id="input" type="text" name="input" />
<p id="output"></p>
<input id="btn" type="submit" value="SUBMIT" />
</form>
msa.js：
includeHTML = function (cb) {
var z, i, elmnt, file, xhttp;
z = document.getElementsByTagName("*");
for (i = 0; i < z.length; i++) {
elmnt = z[i];
file = elmnt.getAttribute("msa-include-html");
if (file) {
xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
elmnt.innerHTML = this.responseText;
elmnt.removeAttribute("msa-include-html");
includeHTML(cb);
}
}
xhttp.open("GET", file, true);
xhttp.send();
return;
}
}
if (cb) cb();
};
function initForm(urlAction) {
document.getElementById("msa").action = urlAction;
document.getElementById("input").addEventListener("keyup", updateOutput);
}
function updateOutput() {
var input = document.getElementById("input").value;
var output = Number((1/3 * input).toFixed(0));
document.getElementById("output").innerHTML = output.toLocaleString();
}
提前非常感谢。