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JavaScript控制兩個(gè)列表框listbox左右交換數(shù)據(jù)的方法

更新時(shí)間：2015年03月18日 11:43:31 作者：上大王

這篇文章主要介紹了JavaScript控制兩個(gè)列表框listbox左右交換數(shù)據(jù)的方法,實(shí)例分析了javascript操作列表框listbox的技巧,非常具有實(shí)用價(jià)值,需要的朋友可以參考下

本文實(shí)例講述了JavaScript控制兩個(gè)列表框listbox左右交換數(shù)據(jù)的方法。分享給大家供大家參考。具體分析如下：

這個(gè)功能我們經(jīng)常用到，將左邊列表框的元素移動(dòng)到右邊，或者將右邊列表框的元素移動(dòng)到左邊，可以一次性全部移動(dòng)

復(fù)制代碼代碼如下:

function listbox_moveacross(sourceID, destID) {

    var src = document.getElementById(sourceID);

    var dest = document.getElementById(destID);

    for(var count=0; count < src.options.length; count++) {

        if(src.options[count].selected == true) {

                var option = src.options[count];

                var newOption = document.createElement("option");

                newOption.value = option.value;

                newOption.text = option.text;

                newOption.selected = true;

                try {

                         dest.add(newOption, null); //Standard

                         src.remove(count, null);

                 }catch(error) {

                         dest.add(newOption); // IE only

                         src.remove(count);

                 }

                count--;

        }

    }

}

//..

listbox_moveacross('countryList', 'selectedCountryList');

下面是像是的演示效果代碼，可以直接在瀏覽器內(nèi)執(zhí)行

復(fù)制代碼代碼如下:

Click below buttons to move selected options right or left.<br>

<table>

<tbody><tr>

    <td>

<select id="sourceSelect" size="10" multiple="">

 <option value="a">Afghanistan</option>

 <option value="b">Bahamas</option>

 <option value="c">Barbados</option>

 <option value="d">Belgium</option>

 <option value="e">Bhutan</option>

 <option value="f">China</option>

 <option value="g">Croatia</option>

 <option value="h">Denmark</option>

 <option value="i">France</option>

</select>

    </td>

    <td>

        <button onclick="listboxMoveacross('sourceSelect', 'destSelect');">&gt;&gt;</button>  <br>

        <button onclick="listboxMoveacross('destSelect', 'sourceSelect');">&lt;&lt;</button>

    </td>

    <td>

<select id="destSelect" size="10" multiple="">

 <option value="a">Afghanistan</option>

 <option value="b">Bahamas</option>

 <option value="c">Barbados</option>

 <option value="d">Belgium</option>

 <option value="e">Bhutan</option>

 <option value="f">China</option>

 <option value="g">Croatia</option>

 <option value="h">Denmark</option>

 <option value="i">France</option>

</select>

    </td>

</tr>

</tbody></table>

    <script>

function listboxMoveacross(sourceID, destID) {

    var src = document.getElementById(sourceID);

    var dest = document.getElementById(destID);

    for(var count=0; count < src.options.length; count++) {

        if(src.options[count].selected == true) {

                var option = src.options[count];

                var newOption = document.createElement("option");

                newOption.value = option.value;

                newOption.text = option.text;

                newOption.selected = true;

                try {

                         dest.add(newOption, null); //Standard

                         src.remove(count, null);

                 }catch(error) {

                         dest.add(newOption); // IE only

                         src.remove(count);

                 }

                count--;

        }

    }

}

</script>