js select multi-select list value passing code_form special effects-JS Tutorial-php.cn

<title>js select</title> 
 
 
<form name="form1" method="post" action=""> 
<table border="0" align="center" width="75%" cellspacing="0" cellpadding="0"> 
<tr> 
<td> 
<table border="0" align="center"> 
<tr> 
<td> 
<select name="leftItem" style="width:200px" size="10" multiple> 
<option value="1">item1</option> 
<option value="2">item2</option> 
<option value="3">item3</option> 
<option value="4">item4</option> 
<option value="5">item5</option> 
</select> 
</td> 
</tr> 
</table> 
</td> 
<td> 
<table border="0" align="center"> 
<tr><td height="30"><input type="button" name="button1" style="width:50px" value=">" onclick="fMoveSelectedOptionsLeftToRight(document.all.leftItem,document.all.rightItem)"></td></tr> 
<tr><td height="30"><input type="button" name="button2" style="width:50px" value=">>" onclick="fMoveAllOptionsLeftToRight(document.all.leftItem,document.all.rightItem)"></td></tr> 
<tr>
<td height="30"><input type="button" name="button3" style="width:50px" value="<" 
onClick="fMoveSelectedOptionsRightToLeft(document.all.leftItem,document.all.rightItem)"></td></tr> 
<tr><td height="30"><input type="button" name="button4" style="width:50px" value="<<" 
onClick="fMoveAllOptionsRightToLeft(document.all.leftItem,document.all.rightItem)"></td></tr> 
</table> 
<table border="0" align="center"> 
<tr><td height="30"><input type="button" name="button1" style="width:50px" value=">" onclick="fMoveSelectedOptionsLeftToRight(document.all.leftItem,document.all.rightItem)"></td>
<td> 
</td>
</tr>
<tr>
<td height="30">
<input type="button" name="button2" style="width:50px" value=">>" onclick="fMoveAllOptionsLeftToRight(document.all.leftItem,document.all.rightItem)"><table border="0" align="center"> 
<tr> 
<td> 
<select name="rightItem" style="width:200px" size="10" multiple> 
</select> 
</td> 
</tr> 
</table>
</td> 
</tr>
<tr><td height="30"><input type="button" name="button3" style="width:50px" value="<" 
onClick="fMoveSelectedOptionsRightToLeft(document.all.leftItem,document.all.rightItem)"></tr></table> 
<tr><td height="30"><input type="button" name="button4" style="width:50px" value="<<" 
onClick="fMoveAllOptionsRightToLeft(document.all.leftItem,document.all.rightItem)"><table border="0" align="center"> 
<tr height="40"> 
<td><input type="button" value="保存" onClick="checkForm()"></td> 
</tr> 
</table><script> 
/*移除左边选中的列表项到右边*/ 
function fMoveSelectedOptionsLeftToRight(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oLeft)) 
{ 
return; 
} 
if(oLeft.selectedIndex==-1) 
{ 
oLeft.selectedIndex=0; 
} 
for(var i=0;i<oLeft.options.length;i++) 
{ 
if(oLeft.options[i].selected) 
{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oLeft.options[i].text); 
oOption.setAttribute("value",oLeft.options[i].value); 
oRight.add(oOption); 
} 
} 
clearSelectedOptions(oLeft); 
} 
/*移除左边的所有列表项到右边*/ 
function fMoveAllOptionsLeftToRight(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oLeft)) 
{ 
return; 
} 
for(var i=0;i<oLeft.options.length;i++) 
{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oLeft.options[i].text); 
oOption.setAttribute("value",oLeft.options[i].value); 
oRight.add(oOption); 
} 
clearAllOptions(oLeft); 
} 
/*移除右边选中的列表项到左边*/ 
function fMoveSelectedOptionsRightToLeft(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oRight)) 
{ 
return; 
} 
if(oRight.selectedIndex==-1) 
{ 
oRight.selectedIndex=0; 
} 
for(var i=0;i<oRight.options.length;i++) 
{ 
if(oRight.options[i].selected) 
{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oRight.options[i].text); 
oOption.setAttribute("value",oRight.options[i].value); 
oLeft.add(oOption); 
} 
} 
clearSelectedOptions(oRight); 
} 
/*移除右边的所有列表项到左边*/ 
function fMoveAllOptionsRightToLeft(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oRight)) 
{ 
return; 
} 
for(var i=0;i<oRight.options.length;i++) 
{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oRight.options[i].text); 
oOption.setAttribute("value",oRight.options[i].value); 
oLeft.add(oOption); 
} 
clearAllOptions(oRight); 
} 
/*清空select所有options*/ 
function clearAllOptions(oSelect) 
{ 
if(oSelect) 
{ 
var ops=oSelect.options; 
while(ops.length>0) 
{ 
oSelect.remove(ops.length-1); 
} 
} 
} 
/*清空select所有选中的options*/ 
function clearSelectedOptions(oSelect) 
{ 
if(oSelect) 
{ 
for(var i=0;i<oSelect.options.length;i++) 
{ 
if(oSelect.options[i].selected) 
{ 
oSelect.remove(i--); 
} 
} 
} 
} 
/*判断select是否有options*/ 
function hasOptions(oSelect) 
{ 
if(oSelect) 
{ 
return oSelect.options.length>0; 
} 
return false; 
} 
function checkForm(){ 
var onRight=document.forms[0].rightItem; 
alert(onRight.options.length); 
for(var i=0;i<onRight.options.length;i++){ 
var text=onRight.options[i].text; 
var value=onRight.options[i].value; 
alert(value+" "+text); 
} 
} 
</script> 
<🎜> 
<🎜> 
<🎜> 
<table border="0" align="center"> 
<tr> 
<🎜> 
<select name="rightItem" style="width:200px" size="10" multiple="multiple"> 
</select> 
<🎜> 
<🎜> 
<🎜> 
<🎜> 
<🎜> 
<🎜> 
<table border="0" align="center"> 
<tr height="40"> 
<🎜><input type="button" value="保存" onClick="checkForm()"><🎜> 
<🎜> 
<🎜></form>
</body>
</html>

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js core code

Copy code The code is as follows:

/*Remove the selected list item on the left to the right* / 
function fMoveSelectedOptionsLeftToRight(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oLeft)) 
{ 
return; 
} 
if(oLeft.selectedIndex==-1) 
{ 
oLeft.selectedIndex=0; 
} 
for(var i= 0;i{ 
if(oLeft.options[i].selected) 
{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oLeft.options[i].text); 
oOption.setAttribute("value",oLeft.options[i].value); 
oRight.add(oOption) ; 
} 
} 
clearSelectedOptions(oLeft); 
} 
/*Remove all list items on the left to the right*/ 
function fMoveAllOptionsLeftToRight(oLeft,oRight) 
 { 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oLeft)) 
{ 
return; 
} 
for(var i=0;i{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oLeft. options[i].text); 
oOption.setAttribute("value",oLeft.options[i].value); 
oRight.add(oOption); 
} 
clearAllOptions(oLeft) ; 
} 
/*Remove the selected list item on the right to the left*/ 
function fMoveSelectedOptionsRightToLeft(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(!hasOptions(oRight)) 
{ 
return; 
} 
if(oRight.selectedIndex==-1) 
{ 
oRight.selectedIndex=0; 
} 
for(var i=0;i{ 
if(oRight.options[i].selected) 
{ 
var oOption = document.createElement("OPTION"); 
oOption.setAttribute("text",oRight.options[i].text); 
oOption.setAttribute("value" ,oRight.options[i].value); 
oLeft.add(oOption); 
} 
} 
clearSelectedOptions(oRight); 
} 
/*Remove the right one All list items to the left*/ 
function fMoveAllOptionsRightToLeft(oLeft,oRight) 
{ 
if(!(oLeft&&oRight)) 
{ 
return; 
} 
if(! hasOptions(oRight)) 
{ 
return; 
} 
for(var i=0;i{ 
var oOption = document. createElement("OPTION"); 
oOption.setAttribute("text",oRight.options[i].text); 
oOption.setAttribute("value",oRight.options[i].value); 
oLeft.add(oOption); 
} 
clearAllOptions(oRight); 
} 
/*Clear all select options*/ 
function clearAllOptions(oSelect) 
{ 
if(oSelect) 
{ 
var ops=oSelect.options; 
while(ops.length>0) 
{ 
oSelect.remove(ops.length-1); 
} 
} 
} 
/*Clear all selected options*/ 
function clearSelectedOptions(oSelect) 
{ 
if(oSelect) 
{ 
for (var i=0;i{ 
if(oSelect.options[i].selected) 
{ 
oSelect.remove(i--); 
} 
} 
} 
} 
/*Judge whether select has options*/ 
function hasOptions(oSelect) 
{ 
if(oSelect) 
 { 
return oSelect.options.length>0; 
} 
return false; 
} 