为什么输入的value属性没有变化? [英] Why doesn't the value attribute of the input change?

问题描述

好吧，我有这个代码:

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=" + 转义(idSite);var ajx = sendAJAX(url, true);ajx.onreadystatechange = 函数 () {如果(ajx.readyState == 4){var 结果 = ajx.responseText;结果 = "顶部";document.getElementById("CI.SiteName").value = result;}}}

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.

解决方案

value attribute 与实际值不同步；这就是 value property 的用途.

这不是问题，因为您永远不会使用 .getAttribute('value') 而是使用属性 .value 来访问当前值.

Well I have this code in view:

<input id="CI.SiteName" type="text" value="" name="@@CI.SiteName" disabled="">

and then I doing some event that would call this function:

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.

解决方案

The value attribute is not synced with the actual value; that's what the value property is for.

This is not a problem though since you'll never use .getAttribute('value') but use the property .value to access the current value.

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