DIV禁用或变灰 [英] DIV disabled or greyed out

问题描述

我有一个形式的网页。根据用户的选择在顶部
该页面，该页面将禁用形式的部分。我的计划是把
一个℃至每节; DIV＆GT;＆LT; / DIV＆GT; 。每一节都包含一些集合
的表单元素。

I have a webpage with a form. Depending on user selections at the top of the page, the page will disable sections of the form. My plan is to put each section between a <div></div>. Each section contains some collection of form elements.

因此​​，如果用户不选择一些条件，对相关的部分
形式被禁用。在一个典型的Windows类型的应用这些元素的
得到禁止和灰色。什么是在网页中做到这一点的最好方法是什么？
JavaScript可以确定何种形式元素是一个div部分，
禁用通过例如环这些元素？我知道我可以禁用
每一个元素，如果我知道它，但有没有办法找出所有的ID
对于一些的div元素节？

So if the user does not select some criteria, the related section of the form gets disabled. In a typical Windows type of application these elements get disabled and greyed out. What's the best way to do this in a webpage? Can Javascript determine what form elements are in a div section and disable these elements through a loop for example? I know I can disable each element if I know its it but is there a way to find out all the IDs of elements for some div section?

是否有可能在页面加载事件的基础上在c＃标志变量变灰？

Is it possible to gray out in page load event based on flag variable in c#?

推荐答案

给你的div元素的ID，然后取它里面的所有的标签和残疾人属性适用于他们。

Give your div element an id and then take all tags inside it and apply the disabled attribute to them.

var elem = document.getElementById ( "div1").getElementsByTagName ( "*");
for ( var i=0; i < elem.length; i ++ )
{
    elem[i].disabled = true;
}

要启用控件disabled属性设置为false。

To enable the controls set the disabled attribute to false.

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