如何利用JS实现复制/粘贴功能
2个回答
2016-11-18
展开全部
1、最基本的复制
Java代码
<script language="JavaScript">
function readTxt()
{
alert(window.clipboardData.getData("text"));
}
function setTxt()
{
var t=document.getElementById("txt");
t.select();
window.clipboardData.setData('text',t.createTextRange().text);
}
</script>
<input name="txt" value="测试">
<input type="button" value="复制" onclick="setTxt()">
<input type="button" value="读取" onclick="readTxt()">
2、扩展复制:复制表格
Java代码
<INPUT TYPE="button" value="选中测试表格" onclick="CopyTable()">
测试
<TABLE border="1" id="oTable">
<TR>
<TD>测试表格</TD>
<TD>测试表格</TD>
</TR>
<TR>
<TD>测试表格</TD>
<TD>测试表格</TD>
</TR>
</TABLE>文字
<SCRIPT LANGUAGE="JavaScript">
<!--
function CopyTable()
{
var txt = document.body.createTextRange();
txt.moveToElementText(document.getElementById('oTable'));
txt.select();
}
//-->
</SCRIPT>
、兼容IE,firefox等浏览器的复制
Java代码
<script>
function copyToClipboard(txt) {
if(window.clipboardData) {
window.clipboardData.clearData();
window.clipboardData.setData("Text", txt);
} else if(navigator.userAgent.indexOf("Opera") != -1) {
window.location = txt;
} else if (window.netscape) {
try {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
} catch (e) {
alert("被浏览器拒绝!\n请在浏览器地址栏输入'about:config'并回车\n然后将'signed.applets.codebase_principal_support'设置为'true'");
}
var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
if (!clip)
return;
var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
if (!trans)
return;
trans.addDataFlavor('text/unicode');
var str = new Object();
var len = new Object();
var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
var copytext = txt;
str.data = copytext;
trans.setTransferData("text/unicode",str,copytext.length*2);
var clipid = Components.interfaces.nsIClipboard;
if (!clip)
return false;
clip.setData(trans,null,clipid.kGlobalClipboard);
}
}
</script>
<button onclick="copyToClipboard('你好!');">复制文本“你好!”</button>
<textarea id="test"></textarea>
Java代码
<script language="JavaScript">
function readTxt()
{
alert(window.clipboardData.getData("text"));
}
function setTxt()
{
var t=document.getElementById("txt");
t.select();
window.clipboardData.setData('text',t.createTextRange().text);
}
</script>
<input name="txt" value="测试">
<input type="button" value="复制" onclick="setTxt()">
<input type="button" value="读取" onclick="readTxt()">
2、扩展复制:复制表格
Java代码
<INPUT TYPE="button" value="选中测试表格" onclick="CopyTable()">
测试
<TABLE border="1" id="oTable">
<TR>
<TD>测试表格</TD>
<TD>测试表格</TD>
</TR>
<TR>
<TD>测试表格</TD>
<TD>测试表格</TD>
</TR>
</TABLE>文字
<SCRIPT LANGUAGE="JavaScript">
<!--
function CopyTable()
{
var txt = document.body.createTextRange();
txt.moveToElementText(document.getElementById('oTable'));
txt.select();
}
//-->
</SCRIPT>
、兼容IE,firefox等浏览器的复制
Java代码
<script>
function copyToClipboard(txt) {
if(window.clipboardData) {
window.clipboardData.clearData();
window.clipboardData.setData("Text", txt);
} else if(navigator.userAgent.indexOf("Opera") != -1) {
window.location = txt;
} else if (window.netscape) {
try {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
} catch (e) {
alert("被浏览器拒绝!\n请在浏览器地址栏输入'about:config'并回车\n然后将'signed.applets.codebase_principal_support'设置为'true'");
}
var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
if (!clip)
return;
var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
if (!trans)
return;
trans.addDataFlavor('text/unicode');
var str = new Object();
var len = new Object();
var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
var copytext = txt;
str.data = copytext;
trans.setTransferData("text/unicode",str,copytext.length*2);
var clipid = Components.interfaces.nsIClipboard;
if (!clip)
return false;
clip.setData(trans,null,clipid.kGlobalClipboard);
}
}
</script>
<button onclick="copyToClipboard('你好!');">复制文本“你好!”</button>
<textarea id="test"></textarea>
展开全部
复制 就是获取 所选内容,黏贴 就是把获取的内容 加载到 你选择的地方
<SCRIPT language=JavaScript>
function copy()
{
var obj=document.getElementById("txarea");
window.clipboardData.setData("Text",obj.value);//设置数据
alert("复制成功");
}
function paste() {
var obj=document.getElementById("txarea");
var clipboard = window.clipboardData.getData('Text');
clipboard == null ? alert('no data') : obj.value = clipboard;
}
</SCRIPT>
<INPUT name=Button onClick="txarea.value=''" type=button value='clear'>
<INPUT name=Button onClick="copy('textarea')" type=button value='copy'>
<INPUT name=Button onClick="paste('textarea')"; type=button value='paste'><br>
<textarea name="txarea" id="txarea" cols="105" rows="11" class="transform"></textarea></p>
<SCRIPT language=JavaScript>
function copy()
{
var obj=document.getElementById("txarea");
window.clipboardData.setData("Text",obj.value);//设置数据
alert("复制成功");
}
function paste() {
var obj=document.getElementById("txarea");
var clipboard = window.clipboardData.getData('Text');
clipboard == null ? alert('no data') : obj.value = clipboard;
}
</SCRIPT>
<INPUT name=Button onClick="txarea.value=''" type=button value='clear'>
<INPUT name=Button onClick="copy('textarea')" type=button value='copy'>
<INPUT name=Button onClick="paste('textarea')"; type=button value='paste'><br>
<textarea name="txarea" id="txarea" cols="105" rows="11" class="transform"></textarea></p>
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