javascript 为什么输入的 value 属性没有改变？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10346471/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Why doesn't the value attribute of the input change?
提问by Mr.Rendezvous
Well I have this code in view:
好吧，我有这个代码：
<input id="CI.SiteName" type="text" value="" name="@@CI.SiteName" disabled="">
and then I doing some event that would call this function:
然后我做了一些会调用这个函数的事件：
chooseSite = function () {
var url = "/main/Ajax/GetSiteDetail?" +
"&cid=" + escape(idSite);
var ajx = sendAJAX(url, true);
ajx.onreadystatechange = function () {
if (ajx.readyState == 4) {
var result = ajx.responseText;
result = "TOP";
document.getElementById("CI.SiteName").value = result;
}
}
}
in browser it changed to "TOP" but when I inspect element with firebug, the VALUE attribute of INPUT still "", not changed.
在浏览器中它变成了“TOP”但是当我用 firebug 检查元素时，INPUT 的 VALUE 属性仍然是“”，没有改变。
回答by ThiefMaster
The valueattributeis not synced with the actual value; that's what the valuepropertyis for.
该value属性与实际值不同步；这就是value物业的用途。
This is not a problem though since you'll never use .getAttribute('value')but use the property .valueto access the current value.
这不是问题，因为您永远不会使用.getAttribute('value')但使用该属性.value来访问当前值。
