js浏览器屏蔽右键复制粘贴剪切选中操作

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" 代码笔记 www.198zone.com</title>
</head>
 
<body>
 
<script type="text/javascript">
//屏蔽右键菜单
document.oncontextmenu = function (event){
    if(window.event){
        event = window.event;
    }try{
        var the = event.srcElement;
        if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
            return false;
        }
        return true;
    }catch (e){
        return false;
    }
}
 
//屏蔽粘贴
document.onpaste = function (event){
    if(window.event){
        event = window.event;
    }try{
        var the = event.srcElement;
        if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
            return false;
        }
        return true;
    }catch (e){
        return false;
    }
}
 
//屏蔽复制
document.oncopy = function (event){
    if(window.event){
        event = window.event;
    }try{
        var the = event.srcElement;
        if(!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
            return false;
        }
        return true;
    }catch (e){
        return false;
    }
}
 
//屏蔽剪切
document.oncut = function (event){
    if(window.event){
        event = window.event;
    }try{
        var the = event.srcElement;
        if(!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
            return false;
        }
        return true;
    }catch (e){
        return false;
    }
}
 
//屏蔽选中
document.onselectstart = function (event){
    if(window.event){
        event = window.event;
    }try{
        var the = event.srcElement;
        if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
            return false;
        }
        return true;
    } catch (e) {
        return false;
    }
}
</script>
 
 
</body>
</html>



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