One other vitally important point:

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Join Stack Overflow to learn, share knowledge, and build your career. Thanks for the comment. Keep in mind the. If you would like to select a value based on the item's value and not the index of that item then you can do the following:.

What's important to understand is that val for a select element returns the value of the selected option, but not the number of element as does selectedIndex in javascript. It's not all that efficient. The attribute "selected" is not how you specify a selected radio button in Firefox and Chrome at least. Use the "checked" attribute:. Where name is select id and idx is the option value you want selected. The pure javascript selectedIndex attribute is the right way to go because,it's pure javascript and works cross-browser:.

Here is a jsfiddle demo with two dropdowns using one to set the other:. You can also call this before changing the selectedIndex if what you want is the "selected" attribute on the option tag here is the fiddle:. Select the item based on the value in the select list especially if the option values have a space or weird character in it by simply doing this:.

Also, if you have a dropdown as opposed to a multi-select you may want to do a break; so you don't jquery option eq selected value change the first-value-found to be overwritten. I need a solution that has no hard coded values in the js file; using selectedIndex. Most of the given solutions failed one browser. This appears to work in FF10 and IE8 can someone else test in other versions.

Now I don't care about the index I just wanted the item by its value. I faced same problem. First you need go through the events i. The Second event is selecting default option using any function such as val etc. You should ensure that the Second event should happen after the First event. To achieve this take two functions lets say generateSelectbox for genrating select box and selectDefaultOption.

You need to ensure that selectDefaultOption should jquery option eq selected value change called only after the execution of generateSelectbox. You can try following code. Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Would you like to answer one of these unanswered questions instead?

Email Sign Up or sign in with Google. I have an select box: For example, if I am trying to set "Number 3", I'm trying this: How can I set an option as selected based on it's index using jquery option eq selected value change This is almost exactly the same as you jquery option eq selected value change question: Marc 8, 2 22 The chosen answer jquery option eq selected value change John Kugelman did not work for me in IE7.

Mackey Jun 27 '11 at Sadly, none of these ways fire a change event for me. When you're programmatically setting a selected option, you may not always want the bound change event to be triggered like on a page load event.

To solve that jquery leaves it up to the developer to decide. Is the first option 0 or 1? I thought it worth mentioning that post-jQuery 1. This may also be useful, so I thought I'd add it here.

If you would like to select a value based on the item's value and not the index of that item then you can do the following: Andrea Ligios 38k 12 72 Just be aware that.

If you need to change the selected value more often e. Chris Brandsma 9, 5 39 This makes copying from one element to another dead simple as well! This is simple and straightforward. I much prefer this solution. This works in Chrome, but doesn't work for me with IE9. This answer gave me what i needed. Mohamad Rostami 2, 24 To deselect the option use an empty array: Anonymous 2, 4 35 NicolasBernier 1, 12 I've always had issues with prop 'selected'the following has always worked for me: Drew 4 10 To clarify Marc's and John Kugelman's answers, you could use: You don't actually need the jQuery object though.

This will do the trick: Use the "checked" attribute: Spycho 5, 3 24 The pure jquery option eq selected value change selectedIndex attribute is the right way to go because,it's pure javascript and works cross-browser: Object has no method 'attr'" This syntax stops those errors.

Select the item based on the value in the select list especially if the option values have a space or weird character in it by simply doing this: Nexxas 5 The First event is generating select box with options. To achieve this take two functions lets say generateSelectbox for genrating select box and selectDefaultOption You need to ensure that selectDefaultOption should be called only after the execution of generateSelectbox.

You can also init multiple values if your selectbox is a multipl: You can try following code code: Ram Lakhan Yadav 33 5. Stack Overflow works best with JavaScript enabled.

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Given a jQuery object that represents a set of DOM elements, the. The supplied selector is tested against each element; the elements that don't match the selector will be included in the result. The result of this call is a red background for items 2 and 4, as they do not match the selector recall that: The second version of the. For example, suppose our list had an id applied to one of its items:. We can fetch the third list item using the native JavaScript getElementById function, then remove it from a jQuery object:.

This statement changes the color of items 1, 2, 4, and 5. We could have accomplished the same thing with a simpler jQuery expression, but this technique can be useful when, for example, other libraries provide references to plain DOM nodes. As of jQuery 1. Elements for which the function returns true are excluded from the filtered set; all other elements are included.

When a CSS selector string is passed to. When a specific node or array of nodes are provided, text or comment nodes will only be removed from the jQuery object if they match one of the nodes in the filtering array. Remove elements from the set of matched elements. Selector or Element or Array. A string containing a selector expression, a DOM element, or an array of elements to match against the set. A function used as a test for each element in the set. It accepts two arguments, index , which is the element's index in the jQuery collection, and element , which is the DOM element.

Within the function, this refers to the current DOM element. Consider a page with a simple list on it: Adds a border to divs that are not green or blue. Removes the element with the ID "selected" from the set of all paragraphs. Removes all elements that match "div p.