You can simplify this by checking the first object that is returned from JQuery like so: In this case if there is a truthy value at the first ([0]) index, then assume class exists. Edit 04/10/2013: I’ve created a jsperf test case here.
You can use the jQuery attribute selector:
This definitely should work. Here’s a demo. Make sure you have placed your code into a $(document).ready:
To get all the elements starting with “jander” you should use: To get those that end with “jander” See also the JQuery documentation
There’s an easier way that doesn’t require you to go into the options tag: Check out the this jQuery method. NOTE: The above code does not trigger the change event. You need to call it like this for full compatibility:
If you know the element type then: (eg: replace ‘element’ with ‘div’) If you don’t know the element type: More information available
or even : and reason behind usage of $(‘#test’).get(0) in JQuery or even $(‘#test’)[0] is that $(‘#test’) is a JQuery selector and returns an array() of results not a single element by its default functionality an alternative for DOM selector in jquery is which is different from .attr() and $(‘#test’).prop(‘foo’) grabs the specified DOM foo property, while $(‘#test’).attr(‘foo’) grabs the specified HTML foo attribute and you can find more details about differences here.
Not exactly!! In jQuery, to get the same result as document.getElementById, you can access the jQuery Object and get the first element in the object (Remember JavaScript objects act similar to associative arrays).
The jQuery way: In your example: Run code snippetExpand snippet Or through the DOM: or even : and reason behind usage of $(‘#test’).get(0) in JQuery or even $(‘#test’)[0] is that $(‘#test’) is a JQuery selector and returns an array() of results not a single element by its default functionality an alternative for DOM selector in jquery is which is different from .attr() and $(‘#test’).prop(‘foo’) grabs the specified … Read more