在上面的代码中,#selectBox是你要设置默认值的select框的id,optionValue是你要设置为默认选中的选项的值。通过val()方法可以设置select框的值为指定的选项值。 示例代码 下面是一个完整的示例代码,演示如何使用jQuery给select option赋值默认值: <!DOCTYPEhtml><html><head><title>Set default value for select box...
首先,我们使用$("#mySelect").val("option2")将下拉框的默认值设置为"option2"。接着,我们通过$("#setDefault").click函数为按钮添加了一个点击事件,当按钮被点击时,将下拉框的默认值设置为"option3"。 3. 运行结果 当我们将以上HTML代码和jQuery代码整合到一起,并在浏览器中运行时,将会看到下拉框的默认值...
DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>jQuery Set Select Default Value</title> <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script> </head> <body> <select id="mySelect"> <option value="1">Option 1</option> <option value="2">...
<selectid="city"><optionvalue="mumbai">Mumbai</option><optionvalue="goa">Goa</option><optionvalue="delhi">Delhi</option></select> $(function(){$('#city').val('goa');}); In the above example, we have defined acitydropdown usingselect. The default value for the city dropdown isgo...
properties passed into a jQuery UI widget as an argument. For example, the slider widget has an option for orientation, which allows you to specify whether the slider should be horizontal or vertical. To set this option for a slider on your page, you just pass it in as an argument, ...
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<select name="slider" id="flip-a" data-role="slider"> <option value="off">Off</option> <option value="on">On</option> </select>4. RadioButton<fieldset data-role="controlgroup"> <legend>Choose a pet:</legend> <input type="radio" name="radio-choice-1" id="radio-choice-1" ...
Default: "input,textarea,button,select,option" Prevents sorting if you start on elements matching the selector. Code examples: Initialize the sortable with the cancel option specified: 1 2 3 $( ".selector" ).sortable({ cancel: "a,button" }); Get or set the cancel option, after init...
Dialog supports a new option: uiDialogTitleHeadingLevel. When set to a number between 1 & 6, it changes the current <span> wrapper of the dialog title into a heading element of a specified level (issue #2271, PR #2275). We’ve also enabled GitHub CodeQL checks and fixed a few ...
$( ".selector" ).autocomplete( "option", "delay", 500 ); disabled Type: Boolean Default: false Disables the autocomplete if set to true. Code examples: Initialize the autocomplete with the disabled option specified: 1 2 3 $( ".selector" ).autocomplete({ disabled: true }); Get ...