html-select

问题 I have a drop-down list with known values. What I\'m trying to do is set the drop down list to a particular value that I know exists using jQuery. Using regular JavaScript, I would do something like: ddl = document.getElementById(\"ID of element goes here\"); ddl.value = 2; // 2 being the value I want to set it too. However, I need to do this with jQuery, because I\'m using a CSS class for my selector (stupid ASP.NET client ids...). Here are a few things I\'ve tried: $(\"._statusDDL\").val(2)

问题 I have searched Google and can\'t find anything on this. I have this code. <select ng-model=\"somethingHere\" ng-options=\"option.value as option.name for option in options\" ></select> With some data like this options = [{ name: \'Something Cool\', value: \'something-cool-value\' }, { name: \'Something Else\', value: \'something-else-value\' }]; And the output is something like this. <select ng-model=\"somethingHere\" ng-options=\"option.value as option.name for option in options\" class=\

问题 I thought that adding a \"value\" attribute set on the <select> element below would cause the <option> containing my provided \"value\" to be selected by default: <select name=\"hall\" id=\"hall\" value=\"3\"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> However, this did not work as I had expected. How can I set which <option> element is selected by default? 回答1: Set selected="selected" for the option you want to be the default.

问题 I\'m using placeholders for text inputs which is working out just fine. But I\'d like to use a placeholder for my selectboxes as well. Of course I can just use this code: <select> <option value=\"\">Select your option</option> <option value=\"hurr\">Durr</option> </select> But the \'Select your option\' is in black instead of lightgrey. So my solution could possibly be CSS-based. jQuery is fine too. This only makes the option grey in the dropdown (so after clicking the arrow): option:first {

问题 What is the best method for adding options to a <select> from a JavaScript object using jQuery? I\'m looking for something that I don\'t need a plugin to do, but I would also be interested in the plugins that are out there. This is what I did: selectValues = { \"1\": \"test 1\", \"2\": \"test 2\" }; for (key in selectValues) { if (typeof (selectValues[key] == \'string\') { $(\'#mySelect\').append(\'<option value=\"\' + key + \'\">\' + selectValues[key] + \'</option>\'); } } A clean/simple

问题 How do I get the selected value from a dropdown list using JavaScript? I tried the methods below, but they all return the selected index instead of the value: var as = document.form1.ddlViewBy.value; var e = document.getElementById(\"ddlViewBy\"); var strUser = e.options[e.selectedIndex].value; 回答1: If you have a select element that looks like this: <select id="ddlViewBy"> <option value="1">test1</option> <option value="2" selected="selected">test2</option> <option value="3">test3</option> <