在项目中用到的一些JS代码

1、禁用页面某些输入框里的右键菜单和Ctrl+V操作

Array.prototype.each=function(iterator){
    for(var i=0;i<this.length;i++){
        try{
            iterator(this[i]);
        }
        catch(e){
            
        }
    }
}

var Inputs=document.getElementsByTagName("input");
var activeEleFlag=null;
Inputs.each=Array.prototype.each;

Inputs.each(function(r){
    if(!document.all&&r.getAttribute("pasteFlag")!="true"){
        r.addEventListener("focus",function(){activeEleFlag=this.tagName;},false);
        r.addEventListener("blur",function(){activeEleFlag=null;},false);
    }
});

document.onkeydown=function(e){
    var event=window.event||e;
    if(event.ctrlKey&&String.fromCharCode(event.keyCode).toLowerCase()=="v"){
        if(document.activeElement){
            var activeEle=document.activeElement;
            if(activeEle.tagName.toLowerCase()=="input"&&activeEle.getAttribute("pasteFlag")!="true"){
                event.returnValue=false;
                event.cancelBubble=true;
                return false;
            }
        }
        else if(activeEleFlag!=null&&activeEleFlag.toLowerCase()=="input"){
            event.cancelBubble=true;
            if(event.preventDefault){ 
                event.preventDefault();
            }
            return false;
        }
    }
}

 

2、变换页面字体大小

function ChangeFontSize(fontsize){
    var fontPara=document.getElementById('content');    
    if(fontPara){
        fontPara.style.fontSize=fontsize+'px';    
        if(fontsize==14){
        var spanTags=document.getElementById('newsList').getElementsByTagName('span');
            for(iSpan in spanTags)
            if(spanTags[iSpan].className=="lidate")spanTags[iSpan].style.fontSize="10px";
        }
        if(fontsize==10){
            var liTags=document.getElementById('newsList').getElementsByTagName('li');
            for(i=0 ;i<liTags.length;i++){
                liTags[i].style.lineHeight="180%";    
            }
        }
    }
}

 

3、一段插入Flash代码的JS代码

function i(ur,w,h){
        document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="'+w+'" height="'+h+'"> ');
        document.write('<param name="movie" value="' + ur + '">');
        document.write('<param name="quality" value="high"> ');
        document.write('<param name="wmode" value="transparent"> ');
        document.write('<param name="wmode" value="opaque"> ');
        document.write('<param name="menu" value="false"> ');
        document.write('<embed src="' + ur + '" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="'+w+'" height="'+h+'"  wmode="transparent"></embed> ');
        document.write('</object> ');
}