[程式][JS][HTML] 設定取得下拉選單(select)選取的項目(option) | JavaScript select value
廢話不多說,馬上來看原始碼:設定:
廢話不多說,馬上來看原始碼:
設定:
<HTML> <form name="testForm" > <!-- 其他屬性(attribute)請自行添加. --> <input value="2" type="hidden" name="pageIndex" /> <select name="pageIndexA" > <option value="1" selected >1</option> <option value="2">2</option> <option value="3">3</option> </select> </form> <script> SetPage( document.forms[testForm] ); </script> </HTML>function SetPage( form ) { var userSelectedVal = form.elements[pageIndex].value ; var selector = form.elements[pageIndexA] ; var opts = selector.options; for ( var opt, j=0; j<opts.length ; j++ ) { opt = opts[j]; if ( opt.value == userSelectedVal ) { selector.selectedIndex = j; break; } } // for } // SetPage()
參考資料:Changing the selected o...
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