html-select | 易学教程

Detect programmatical changes on a html select box

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问题 Is there a way to make a HTML select element call a function each time its selection has been changed programmatically? Both IE and FF won't fire 'onchange' when the current selection in a select box is modified with javascript. Beside, the js function wich changes the selection is part of framework so I can't change it to trigger an onchange() at then end for example. Here's an example: <body> <p> <select id="sel1" onchange="myfunction();"><option value="v1">n1</option></select> <input type=

Can you have multiple font colors in select field?

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问题 Is it possible to have an HTML select field where the OPTION text is of different colors? <select> <option>Black_text (yellow_text)</option> </select> I tried using an CSS SPAN element to color the text but that doesn't seem to work. Any ideas? UPDATE: Note, I'm trying to have multiple font colors on the same OPTION row. I've seen quite a few tutorials on how to style the entire OPTION row but I'm trying to style elements within the same option row. 回答1: Try to style the option elements

Creating drop menu navigation with <select>

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问题 I've managed to make myself drop menu navigation with html <select> . I've encountered one problem, though. My external links aren't working. Namely Youtube. Here is the code: <select ONCHANGE="location = this.options[this.selectedIndex].value;"> <option value="" selected="selected">Navigation</option> <option value="index.html">Home</option> <option value="detroitvideoproduction.html">Video Production</option> <option value="locationsounddetroit.html">Location Sound</option> <option value=

specify name and id to Drop down razor technique asp dot net mvc4

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问题 I have asp web form and i'm using razor technique to post that form, problem is that, i want to know that how to specify ID and NAME attribute to razor dropdown list because, in next step, i'm getting the form value by using the ID and NAME attribute.. VIEW code is : @Html.DropDownList("ID", (SelectList) ViewBag.list, " -- Select Business Type -- ") CONTROLLER: public ActionResult coverage() { var query = db.Database.SqlQuery<businessDropDownModel>("businesDropDownSP"); ViewBag.list = new

HTML Select options width is cropped in IE. Any solutions?

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问题 In Mozilla and non-IE browsers, if the option of select list is of a greater length than the select's width, it will show up. But in IE, it will crop the option up to the select's width. Is there any way to make IE's select behaviour to be like that of non-IE browsers? 回答1: This seems to work well in forcing IE to reevaluate the select width. Works in IE7 and IE8. if (jQuery.browser.msie) { jQuery("#" + selectID).css("width", "100%").css('width', 'auto'); } 回答2: css: .set_width { width:120px;

Change event on <select>

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问题 With Mootools, if I attach a change event listener on a <select> how do I access the option that was selected. I would like the actual element and not just the value. $('select').addEvent('change',function(event) { //?? }); 回答1: Either of these will work: find by :selected pseudo selector in descendants this.getElement(':selected'); get first selected value this.getSelected()[0]; pure javascript, use the selectedIndex property this.options[this.selectedIndex]; 回答2: Just access the

2 Select options Combine values and link

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I need to combine two values and link to the selected site. ex. select> Google> select>Translate join two values T2 [translate] T1 [.google.com] = translate.google.com Go JS <script> function goToNewPage() { var g=document.getElementById('target').value; { window.location.href = document.getElementById('target').value; } } </script> HTML <form name="dropdown"> <select name="selected" id="target2" > <option selected>Select...</option> <option value=".google.com/">Google</option> <option value=".search.com/">Bing</option> </select> <select name="selected" id="target" > <option selected>Select...

Set the selected option as the first option in the selectbox

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问题 Open this link in IE to exactly understand the behavior that I will be describing and seek a hack for. I have the following select list: <select> <option value="volvo">Volvo</option> <option value="saab">Saab</option> <option value="mercedes">Mercedes</option> <option value="audi">Audi</option> </select> When I render this in IE, drop-down behavior of this changes compared to other browsers due to which some of the options are pushed above the selectbox while the others are pushed below

Rails 3.1 interdependent select dropdown lists

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问题 My database structure: Countries(id,title,prefix) Towns(id,country_id,title) Street(id,town_id,title) I need to create interdependent select dropdown list: when i select Country, ajax loading towns from this country into select tag, and when i select Street, ajax loading street by selected town_id into street select tag. I want to ask whether there is a Rails way to generate this list. Thank you. 回答1: I found some tutorial to make what you want : dependant dropdowns menus cascading menu 来源：

Why is the dropdown box of SELECT tag shown at wrong place?

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问题 My CSS file doesn't touch the tag 'select' at all, also no CSS classes are related to the tag 'select'. But when showing in browser, the dropdown box which contains values are shown at the wrong place, as in the screenshot below: Why is it so? Or is it a bug of Chrome? 'cause as I know we can't change this kind of dropdown box position neither by CSS nor JS. I want it back to the normal place just right below the SELECT element!!! This is the portion of the HTML for the above mentioned