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)

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

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');">>></button> <br>

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

希望本文所述對(duì)大家的javascript程序設(shè)計(jì)有所幫助。

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