本文實例講述了基于javascript實現單選及多選的向右和向左移動實例。分享給大家供大家參考。具體實現方法如下：
方法 一：
<body><h1>實現單選及多選的向右和向左移動</h1><div id="lst"> <span> <select id="lselect" size="10" multiple="multiple" style="width: 100px; background-color:blue;"> <option>選項1</option> <option>選項2</option> <option>選項3</option> <option>選項4</option> <option>選項5</option> <option>選項6</option> <option>選項7</option> <option>選項8</option> <option>選項9</option> <option>選項10</option> </select> <span style="width: 200px;height: 100px;"> <input type="button" value="單個向右移動" onclick="oneRMove()" /> <input type="button" value="多個向右移動" onclick="moveRMove()" /> <input type="button" value="單個向左移動" onclick="oneLMove()" /> <input type="button" value="多個向左移動" onclick="moveLMove()" /> </span> <span> <select id="rselect" size="10" style="width: 100px;background-color: yellow;" multiple="multiple"> </select> </span> </span></div> </body><script type="text/javascript">window.onload = function(){}//獲取select對象var lselect=document.getElementById("lselect");var rselect=document.getElementById("rselect");//獲取lselect和roptions對象中的所有optionvar loptions=lselect.options;var roptions=rselect.options;function oneRMove(){for(var i=0;i<loptions.length;i++){var op=loptions[i];if(op.selected){rselect.appendChild(op);break;}}}function moveRMove(){for(var i=0;i<loptions.length;i++){var op=loptions[i];if(op.selected){rselect.appendChild(op);i--;}}}function oneLMove(){for(var i=0;i<roptions.length;i++){var op=roptions[i];if(op.selected){lselect.appendChild(op);break;}}}function moveLMove(){for(var i=0;i<roptions.length;i++){var op=roptions[i];if(op.selected){lselect.appendChild(op);i--;}}}</script>方法 二：
<script type="text/javascript">sortitems = 1;function move(fbox,tbox) {for(var i=0; i<fbox.options.length; i++) {if(fbox.options[i].selected && fbox.options[i].value != "") {var no = new Option();no.value = fbox.options[i].value;no.text = fbox.options[i].text;tbox.options[tbox.options.length] = no;fbox.options[i].value = "";fbox.options[i].text = ""; }}BumpUp(fbox);if (sortitems) SortD(tbox);}function BumpUp(box) {for(var i=0; i<box.options.length; i++) {if(box.options[i].value == "") {for(var j=i; j<box.options.length-1; j++) {box.options[j].value = box.options[j+1].value;box.options[j].text = box.options[j+1].text;}var ln = i;break; }}if(ln < box.options.length) {box.options.length -= 1;BumpUp(box); }}function SortD(box) {var temp_opts = new Array(); var temp = new Object(); for(var i=0; i<box.options.length; i++) { temp_opts[i] = box.options[i];}for(var x=0; x<temp_opts.length-1; x++) {for(var y=(x+1); y<temp_opts.length; y++) {if(temp_opts[x].text > temp_opts[y].text) {temp = temp_opts[x].text;temp_opts[x].text = temp_opts[y].text;temp_opts[y].text = temp;temp = temp_opts[x].value;temp_opts[x].value = temp_opts[y].value;temp_opts[y].value = temp; } }}for(var i=0; i<box.options.length; i++) {box.options[i].value = temp_opts[i].value;box.options[i].text = temp_opts[i].text; }}</script></head><body><form ACTION="" METHOD="POST"><table border="0"><tr><td><select multiple size="5" name="list1"><option value="l1">A</option><option value="l2">B </option><option value="l3">C</option><option value="l4">D</option></select></td><td><input type="button" value="向右" onclick="move(this.form.list1,this.form.list2)" name="B1"><br><input type="button" value="向左" onclick="move(this.form.list2,this.form.list1)" name="B2"></td><td><select multiple size="5" name="list2"><option value="r1">E</option><option value="r2">F </option><option value="r3">G</option><option value="r4">H</option></select></td></tr></table></form></body>希望本文所述對大家的javascript程序設計有所幫助。
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