通过ID选择隐藏的表单元素 [英] Selecting hidden form element by Id

问题描述

我试图通过选择其ID而不是其name属性来为隐藏的表单元素设置值.隐藏的元素具有id="user_lat和name="user_lat".我该怎么办?

I am trying to set a value to a hidden form element by selecting their Id and not their name attribute. The hidden element has id="user_lat and name="user_lat". How can I do that?

我似乎可以按姓名选择:

I seem to be able to select by name:

$("input[name='user_lat']").val(results[0].geometry.location.lat());

我下面的按ID选择的尝试无效:

MY attempt at selecting by id below does not work:

$("input #user_lat").val(results[0].geometry.location.lat());

推荐答案

如果将id应用于输入，则选择器不能有空格:

If the id is to be applied to the input, the selector can have no spaces:

$("input#user_lat").doSomething();

如果在input和#user_lat之间放置一个空格，选择器将尝试匹配输入的子项，这没有多大意义.就像具有以下标记:

If you place a space between input and #user_lat, the selector attempts to match a child of the input, which doesn't make much sense. It would be like having the following markup:

<input><el id="user_lat" /></input>

删除空格将匹配包含ID的任何输入:

Removing the space matches any input that contains the ID:

<input id="user_lat" />

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