jQuery 如何将变量从真切换为假
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How to toggle a variable from true to false
提问by Patrioticcow
I have this setup: http://jsfiddle.net/patrioticcow/yJPGa/5/
我有这个设置：http: //jsfiddle.net/patrioticcow/yJPGa/5/
I can't figure out how how to toggle in between a true or false variable. Here is the code:
我不知道如何在 true 或 false 变量之间切换。这是代码：
<div class="test" id="id_test">Some Content...</div>
<div style="display: none" id="id_test">Some Other Content...</div>
<div>
<button id="disable">Save</button>
<button id="enable">Edit</button>
</div>
js
js
var logged_in = false;
$("#disable").click(function() {
logged_in == true;
alert (logged_in);
});
$("#enable").click(function() {
logged_in == false;
alert (logged_in);
});
if (logged_in == true) {
$("#id_test").find(".test").removeClass(".test").addClass(".test_hidde");
}
css
css
.test{color: red;font-size: 16px;}
.test_hidde{color: #000;font-size: 26px;}
采纳答案by Naftali aka Neal
Here ya go in a fiddle: http://jsfiddle.net/maniator/yJPGa/7/
在这里你在小提琴：http: //jsfiddle.net/maniator/yJPGa/7/
changed the lines: logged_in == true;==> logged_in = true;
and logged_in == true;==> logged_in = false;
更改了行：logged_in == true;==>logged_in = true;
和logged_in == true;==>logged_in = false;
==denotes boolean check whereas =sets something as equal to something else
==表示布尔检查，而=将某些内容设置为等于其他内容
Here is a fiddle with the if statement fixed: http://jsfiddle.net/maniator/yJPGa/8/
这是修复了 if 语句的小提琴：http: //jsfiddle.net/maniator/yJPGa/8/
The statement has to be encapsulated in a function
语句必须封装在函数中
回答by Dean Barnes
logged_in = !logged_in
Will do the trick.
会做的伎俩。
Also, these two lines are the same:
此外，这两行是相同的：
if (logged_in == true)
if (logged_in)
