Html:
<div><span>所选时间:</span><select id="xuanyongTimelb" style="width: 200px; height: 130px;" multiple="multiple"></select></div>
<div class="label"><span id="righttimeid">---></span><span id="lefttimeid"><---</span></div>
<div>
<span>可用时间:</span><select id="keyongTimelb" style="width: 200px; height: 130px;" multiple="multiple">
@* <option>0:00</option>*@
<option tag="1">0:30</option>
<option tag="2">1:00</option>
<option tag="3">1:30</option>
<option tag="4">2:00</option>
<option tag="5">2:30</option>
<option tag="6">3:00</option>
<option tag="7">3:30</option>
<option tag="8">4:00</option>
<option tag="9">4:30</option>
<option tag="10">5:00</option>
<option tag="11">5:30</option>
<option tag="12">6:00</option>
<option tag="13">6:30</option>
<option tag="14">7:00</option>
<option tag="15">7:30</option>
<option tag="16">8:00</option>
<option tag="17">8:30</option>
<option tag="18">9:00</option>
<option tag="19">9:30</option>
<option tag="20">10:00</option>
<option tag="21">10:30</option>
<option tag="22">11:00</option>
<option tag="23">11:30</option>
<option tag="24">12:00</option>
<option tag="25">12:30</option>
<option tag="26">13:00</option>
<option tag="27">13:30</option>
<option tag="28">14:00</option>
<option tag="29">14:30</option>
<option tag="30">15:00</option>
<option tag="31">15:30</option>
<option tag="32">16:00</option>
<option tag="33">16:30</option>
<option tag="34">17:00</option>
<option tag="35">17:30</option>
<option tag="36">18:00</option>
<option tag="37">18:30</option>
<option tag="38">19:00</option>
<option tag="39">19:30</option>
<option tag="40">20:00</option>
<option tag="41">20:30</option>
<option tag="42">21:00</option>
<option tag="43">21:30</option>
<option tag="44">22:00</option>
<option tag="45">22:30</option>
<option tag="46">23:00</option>
<option tag="47">23:30</option>
<option tag="48">24:00</option>
</select>
</div>
我 在option自定了“tag”属性,目的,是实现option在两个listbox之间转移之后,要将两边都要进行“排序”(这点很重要,希望大家注意下,往往有些option的顺序是很有意义的),
也许大家会问我,问什么不直接在option的value上赋值?
回答是:(视情况而定),因为,option的text往往不能代表我们要获取的值,而我们有时必须要借助value或者自定的属性的值,这里,我就写了最通用的方法,这样,无论什么时候,都不妨碍,我的option的val定义什么要的值(当然,用不用value,听你的,程序员本来就是艺术家);
下面就讲解下js的部分,我先贴出代码:
//备份时间 排序
//向右
function TimeListBoxRight() {
var leftlb = document.getElementById("xuanyongTimelb");
var rightlb = document.getElementById("keyongTimelb");
var arrtext = new Array();
var arrvalue = new Array();
var arrtag = new Array();
var arrindex = new Array();
var j = 0;
for (var i = 0; i < leftlb.options.length; i++) {
if (leftlb.options[i].selected == true) {
//leftlb.options.add(new Option(rightlb.options[i].text, rightlb.options[i].value));
//rightlb.options.remove(i);
arrtext[j] = leftlb.options[i].text;
arrvalue[j] = leftlb.options[i].value;
arrtag[j] = leftlb.options[i].getAttribute("tag");
arrindex[j] = i;
j++;
}
}
//添加
for (var k = 0; k < arrvalue.length; k++) {
var opt = new Option();
opt.value = arrvalue[k];
opt.text = arrtext[k];
opt.setAttribute("tag", arrtag[k]);
rightlb.options[rightlb.options.length] = opt;
}
//冒泡排序
for (var m = 0; m < rightlb.options.length - 1; m++) {
for (var l = 0; l < rightlb.options.length - 1 - m; l++) {
if (Number(rightlb.options[l].getAttribute("tag")) > Number(rightlb.options[l + 1].getAttribute("tag"))) {
var temp = new Option();
temp.value = rightlb.options[l].value;
temp.text = rightlb.options[l].text;
temp.setAttribute("tag", rightlb.options[l].getAttribute("tag"));
rightlb.options[l].value = rightlb.options[l + 1].value;
rightlb.options[l].text = rightlb.options[l + 1].text;
rightlb.options[l].setAttribute("tag", rightlb.options[l + 1].getAttribute("tag"));
rightlb.options[l + 1].value = temp.value;
rightlb.options[l + 1].text = temp.text;
rightlb.options[l + 1].setAttribute("tag", temp.getAttribute("tag"));
}
}
}
//删除
for (var n = arrindex.length - 1; n >= 0; n--) {
leftlb.options.remove(arrindex[n]);
}
if (leftlb.options.length <= 0) {
$("#righttimeid").disable = true;
}
}
//Item 向左
function TimeListBoxLeft() {
var leftlb = document.getElementById("xuanyongTimelb");
var rightlb = document.getElementById("keyongTimelb");
var arrtext = new Array();
var arrvalue = new Array();
var arrtag = new Array();
var arrindex = new Array();
var j = 0;
for (var i = 0; i < rightlb.options.length; i++) {
if (rightlb.options[i].selected == true) {
//leftlb.options.add(new Option(rightlb.options[i].text, rightlb.options[i].value));
//rightlb.options.remove(i);
arrtext[j] = rightlb.options[i].text;
arrvalue[j] = rightlb.options[i].value;
arrtag[j] = rightlb.options[i].getAttribute("tag");
arrindex[j] = i;
j++;
}
}
//添加
for (var k = 0; k < arrvalue.length; k++) {
var opt = new Option();
opt.value = arrvalue[k];
opt.text = arrtext[k];
opt.setAttribute("tag", arrtag[k]);
leftlb.options[leftlb.options.length] = opt;
}
//冒泡排序
for (var m = 0; m < leftlb.options.length - 1; m++) {
for (var l = 0; l < leftlb.options.length - 1 - m; l++) {
if (Number(leftlb.options[l].getAttribute("tag")) > Number(leftlb.options[l + 1].getAttribute("tag"))) {
var temp = new Option();
temp.value = leftlb.options[l].value;
temp.text = leftlb.options[l].text;
temp.setAttribute("tag", leftlb.options[l].getAttribute("tag"));
leftlb.options[l].value = leftlb.options[l + 1].value;
leftlb.options[l].text = leftlb.options[l + 1].text;
leftlb.options[l].setAttribute("tag", leftlb.options[l + 1].getAttribute("tag"));
leftlb.options[l + 1].value = temp.value;
leftlb.options[l + 1].text = temp.text;
leftlb.options[l + 1].setAttribute("tag", temp.getAttribute("tag"));
}
}
}
//删除
for (var n = arrindex.length - 1; n >= 0; n--) {
rightlb.options.remove(arrindex[n]);
}
if (rightlb.options.length <= 0) {
$("#lefttimeid").disable = true;
}
}
上面的代码也已经很详细了。
注意点(或许能对你有些用处):
1.在option上自定的属性(“tag”)后,你需要明白,如果通过js 得到 “tag”,或者设置“tag”的值,
leftlb.options[i].getAttribute("tag"); //获取tag的值
leftlb.options[l + 1].setAttribute("tag", temp.getAttribute("tag")); //设置“tag”的值
2.html的 Select里面的option 在javascript中如何定义:
var opt = new Option();
//在给“tag”赋值的时候,切记,不要学text,value那样干,(或许 . 你用来会很顺手);
3.当我们在转移之后,我们又重新排序,这里,你想用什么方法排就用什么方法排(算法的灵活运用)。当然,还是要注意:tag的赋值;
//下面的方法,我努力尝试,不过,不管用;
var temp = leftlb.options[l];
leftlb.options[l] = leftlb.options[l+1];
leftlb.options[l+1] = temp;
JavaScript控制两个列表框listbox左右交换数据的方法
本文实例讲述了JavaScript控制两个列表框listbox左右交换数据的方法。分享给大家供大家参考。具体分析如下:
这个功能我们经常用到,将左边列表框的元素移动到右边,或者将右边列表框的元素移动到左边,可以一次性全部移动
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码,可以直接在浏览器内执行
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>