About Jquery getting the properties and values ​​of objects

1. Common methods for obtaining objects

##$("*") means getting all objects（ Generally not used)

$("#XXX") 'Get the element object with id=XXX (Commonly used)

##$(".XXX") 'Get the element object of class=XXX(commonly used)

$("p") ' Tag selector selects all p elements (commonly used) ##$("input[name='uname']") Get The element object with name='

uname

' in the input tag (commonly used) such as:

self.find("input[name='complany']").css('border','#FFB240 1px solid');
self.find("textarea[name='messcont']").css('border','#FFB240 1px solid');		

The above selection method can be used in combination with

space and greater than sign>, plus sign+ and tilde~

. For usage rules, you can refer to here (http://www.php. cn/) In this blog post, I forgot to add the use of comma combination. Here is a case of using comma combination If you want to get p with class message, the code is as follows:

<p class="message">
gegrew
</p>
<span class="message">ageaw</span>

<script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
	console.log($(".message,p").html()) ;
</script>

##2. Other object acquisition methods

$("Element[attribute = 'ceshi']") obtains all certain attributes as ceshi

's element

$("Element[attribute != 'ceshi']") Gets all elements with a certain attribute that is not
ceshi$("Element[attribute ^= 'ceshi']") Gets all elements that have an attribute that does not start with
ceshi$("Element[attribute *='ceshi']" 'Get all elements
## with an attribute starting with ceshi #

<span class="message" src="hello">hello</span>
<span class="message" src="byebye">byebye</span>
<script type="text/javascript" src="js/jquery-1.7.1.min.js"></script>
<script type="text/javascript">
	console.log($("span[src =&#39;hello&#39;]").html()) ;
</script>

3、获取对象的属性

$("Element").attr(key)  获取某一个元素的属性

$("Element").attr(key,value)  给某一个元素设置属性

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