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分享怎么js设置Img的宽度，和高度？
如题：
var img = new Image();
img.src =_imgURL;
设置路径都可以实现为什么
img.height=200+"px";
img.width=198+"px";
没有任何作用？
var img = new Image();
img.src =_imgURL;
设置路径都可以实现为什么
img.height=200+"px";
img.width=198+"px";
没有任何作用？
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zjkwangjie 2009-07-21
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公司上不了QQ 你可以把全部JS代码拿出来 我没有看到这个构造函数 Image();
宝宝的笨熊 2009-07-21
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楼上兄弟 我修改了 可是在还是没有设置成功 你给我是可以设置成功 我也很纳闷 为什么
var img = new Image();
出来的就是不能设置width height 如果兄弟不闲麻烦 能否加我qq远程看下
var img = new Image();
出来的就是不能设置width height 如果兄弟不闲麻烦 能否加我qq远程看下
zjkwangjie 2009-07-21
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img.onload=function(){
this.height=200+"px";
this.width=198+"px";
}
这里还没有改正
this.height=200+"px";
this.width=198+"px";
}
这里还没有改正
zjkwangjie 2009-07-21
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哥们,我写了个简单的 本地测试没有问题
<body>
<img src="3589593025_d7a39ddc06.jpg" id="flower" />
<button id="change_small">变小</button>
<script>
function $(id){
return document.getElementById(id);
}
$("change_small").onclick = function(){
$('flower').style.width = 200 + 'px';
$('flower').style.height = 100 + 'px';
}
</script>
</body>
如果不加style 却出问题了
<body>
<img src="3589593025_d7a39ddc06.jpg" id="flower" />
<button id="change_small">变小</button>
<script>
function $(id){
return document.getElementById(id);
}
$("change_small").onclick = function(){
$('flower').style.width = 200 + 'px';
$('flower').style.height = 100 + 'px';
}
</script>
</body>
如果不加style 却出问题了
宝宝的笨熊 2009-07-21
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我帮整个js贴出来 上面两个方法不行
var PImgPlayer = {
_timer : null,
_items : [],
_container : null,
_index : 0,
_imgs : [],
intervalTime : 3000, //轮播间隔时间
init : function( objID, w, h, time ){
this.intervalTime = time || this.intervalTime;
this._container = document.getElementById(objID);
this._container.style.display = "block";
this._container.style.width = w + "px";
this._container.style.height = h + "px";
this._container.style.position = "relative";
this._container.style.overflow = "hidden";
//this._container.style.border = "1px solid #fff";
var linkStyle = "display: block; TEXT-DECORATION: none;";
if( document.all ){
linkStyle += "FILTER:";
linkStyle += "progid:DXImageTransform.Microsoft.Barn(duration=0.5, motion='out', orientation='vertical') ";
linkStyle += "progid:DXImageTransform.Microsoft.Barn ( duration=0.5,motion='out',orientation='horizontal') ";
linkStyle += "progid:DXImageTransform.Microsoft.Blinds ( duration=0.5,bands=10,Direction='down' )";
linkStyle += "progid:DXImageTransform.Microsoft.CheckerBoard()";
linkStyle += "progid:DXImageTransform.Microsoft.Fade(duration=0.5,overlap=0)";
linkStyle += "progid:DXImageTransform.Microsoft.GradientWipe ( duration=1,gradientSize=1.0,motion='reverse' )";
linkStyle += "progid:DXImageTransform.Microsoft.Inset ()";
linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=PLUS,motion=out )";
linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=PLUS,motion=in )";
linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=DIAMOND,motion=in )";
linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=1,irisStyle=SQUARE,motion=in )";
linkStyle += "progid:DXImageTransform.Microsoft.Iris ( duration=0.5,irisStyle=STAR,motion=in )";
linkStyle += "progid:DXImageTransform.Microsoft.RadialWipe ( duration=0.5,wipeStyle=CLOCK )";
linkStyle += "progid:DXImageTransform.Microsoft.RadialWipe ( duration=0.5,wipeStyle=WEDGE )";
linkStyle += "progid:DXImageTransform.Microsoft.RandomBars ( duration=0.5,orientation=horizontal )";
linkStyle += "progid:DXImageTransform.Microsoft.RandomBars ( duration=0.5,orientation=vertical )";
linkStyle += "progid:DXImageTransform.Microsoft.RandomDissolve ()";
linkStyle += "progid:DXImageTransform.Microsoft.Spiral ( duration=0.5,gridSizeX=16,gridSizeY=16 )";
linkStyle += "progid:DXImageTransform.Microsoft.Stretch ( duration=0.5,stretchStyle=PUSH )";
linkStyle += "progid:DXImageTransform.Microsoft.Strips ( duration=0.5,motion=rightdown )";
linkStyle += "progid:DXImageTransform.Microsoft.Wheel ( duration=0.5,spokes=8 )";
linkStyle += "progid:DXImageTransform.Microsoft.Zigzag ( duration=0.5,gridSizeX=4,gridSizeY=40 ); width: 100%; height: 100%";
}
//
var ulStyle = "margin:0;width:"+w+"px;position:absolute;z-index:999;right:5px;FILTER:Alpha(Opacity=30,FinishOpacity=90, Style=1);overflow: hidden;bottom:-1px;height:16px; border-right:1px solid #fff;";
//
var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
//
var baseSpacStyle = "clear:both; display:block; width:23px;line-height:18px; font-size:12px; FONT-FAMILY:'宋体';opacity: 0.6;";
baseSpacStyle += "border:1px solid #fff;border-right:0;border-bottom:0;";
baseSpacStyle += "color:#fff;text-align:center; cursor:pointer; ";
//
var ulHTML = "";
for(var i = this._items.length -1; i >= 0; i--){
var spanStyle = "";
if( i==this._index ){
spanStyle = baseSpacStyle + "background:#ff0000;";
} else {
spanStyle = baseSpacStyle + "background:#000;";
}
ulHTML += "<li style=\""+liStyle+"\">";
ulHTML += "<span onmouseover=\"PImgPlayer.mouseOver(this);\" onmouseout=\"PImgPlayer.mouseOut(this);\" style=\""+spanStyle+"\" onclick=\"PImgPlayer.play("+i+");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i+1) + "</span>";
ulHTML += "</li>";
}
//
var html = "<a href=\""+this._items[this._index].link+"\" title=\""+this._items[this._index].title+"\" target=\"_blank\" style=\""+linkStyle+"\"></a><ul style=\""+ulStyle+"\">"+ulHTML+"</ul>";
this._container.innerHTML = html;
var link = this._container.getElementsByTagName("A")[0];
link.style.width = w + "px";
link.style.height = h + "px";
link.style.background = 'url(' + this._items[0].img + ') no-repeat center center';
//
this._timer = setInterval( "PImgPlayer.play()", this.intervalTime );
},
addItem : function( _title,_link,_imgURL ){
this._items.push ({title:_title, link:_link,img:_imgURL });
var img = new Image();
img.src =_imgURL;
img.onload=function(){
this.height=200+"px";
this.width=198+"px";
}
this._imgs.push(img);
},
play : function( index ){
if( index!=null ){
this._index = index;
clearInterval( this._timer );
this._timer = setInterval( "PImgPlayer.play()", this.intervalTime );
} else {
this._index = this._index<this._items.length-1 ? this._index+1 : 0;
}
var link = this._container.getElementsByTagName("A")[0];
if(link.filters){
var ren = Math.floor(Math.random()*(link.filters.length));
link.filters[ren].Apply();
link.filters[ren].play();
}
link.href = this._items[this._index].link;
link.title = this._items[this._index].title;
link.style.background = 'url(' + this._items[this._index].img + ') no-repeat center center';
//
var liStyle = "margin:0;list-style-type: none; margin:0;padding:0; float:right;";
var baseSpacStyle = "clear:both; display:block; width:23px;line-height:18px; font-size:12px; FONT-FAMILY:'宋体'; opacity: 0.6;";
baseSpacStyle += "border:1px solid #fff;border-right:0;border-bottom:0;";
baseSpacStyle += "color:#fff;text-align:center; cursor:pointer; ";
var ulHTML = "";
for(var i = this._items.length -1; i >= 0; i--){
var spanStyle = "";
if( i==this._index ){
spanStyle = baseSpacStyle + "background:#ff0000;";
} else {
spanStyle = baseSpacStyle + "background:#000;";
}
ulHTML += "<li style=\""+liStyle+"\">";
ulHTML += "<span onmouseover=\"PImgPlayer.mouseOver(this);\" onmouseout=\"PImgPlayer.mouseOut(this);\" style=\""+spanStyle+"\" onclick=\"PImgPlayer.play("+i+");return false;\" herf=\"javascript:;\" title=\"" + this._items[i].title + "\">" + (i+1) + "</span>";
ulHTML += "</li>";
}
this._container.getElementsByTagName("UL")[0].innerHTML = ulHTML;
},
mouseOver : function(obj){
var i = parseInt( obj.innerHTML );
if( this._index!=i-1){
obj.style.color = "#ff0000";
}
},
mouseOut : function(obj){
obj.style.color = "#fff";
}
}
toury 2009-07-21
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var img = new Image();
img.src =_imgURL;
img.onload=function(){
this.height=200+"px";
this.width=198+"px";
}
zjkwangjie 2009-07-21
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试试 img.style.width = 200 + 'px' 这样看行不行
