<ul class="thumbs">
<li><img onmouseover="switch_product_img(this);" src="images/01.jpg" /></li>
<li><img onmouseover="switch_product_img(this);" src="images/02.jpg" /></li>
<li><img src="images/03.jpg" onmouseover="switch_product_img(this);" /></li>
<li><img src="images/04.jpg" onmouseover="switch_product_img(this);" /></li>
<li><img src="images/05.jpg" onmouseover="switch_product_img(this);" /></li>
<li><img onmouseover="switch_product_img(this);" src="" /></li>
</ul>
<script language="javascript" type="text/javascript">
var th = document.getElementsByTagName("li");
for (i = 0; i<th.length; i++){
var ths = th[i].getElementsByTagName("img");
for (j = 0; j<ths.length; j++){
if (ths[j].src==""){
th[i].style.display = "none";
}
}
}
</script>
不知道(ths[j].src=="")怎么判断不了?请高手指点一下,谢谢
<li><img onmouseover="switch_product_img(this);" src="images/01.jpg" /></li>
<li><img onmouseover="switch_product_img(this);" src="images/02.jpg" /></li>
<li><img src="images/03.jpg" onmouseover="switch_product_img(this);" /></li>
<li><img src="images/04.jpg" onmouseover="switch_product_img(this);" /></li>
<li><img src="images/05.jpg" onmouseover="switch_product_img(this);" /></li>
<li><img onmouseover="switch_product_img(this);" src="" /></li>
</ul>
<script language="javascript" type="text/javascript">
var th = document.getElementsByTagName("li");
for (i = 0; i<th.length; i++){
var ths = th[i].getElementsByTagName("img");
for (j = 0; j<ths.length; j++){
if (ths[j].src==""){
th[i].style.display = "none";
}
}
}
</script>
不知道(ths[j].src=="")怎么判断不了?请高手指点一下,谢谢
var th = document.getElementsByTagName("li");
for (i = 0; i<th.length; i++){
var ths = th[i].childNodes;
for (j = 0; j<ths.length; j++){
if (ths[j].src==""){
th[i].style.display = "none";
}
}
}
</script>
var th = document.getElementsByTagName("li");
for (var i = 0; i < th.length; i++) {
var ths = th[i].getElementsByTagName("img");
for (var j = 0; j < ths.length; j++){
if (!ths[j].getAttribute("src")) {
th[i].style.display = "none";
break;
}
}
}因为src=""时,将指向当前页面。html里src最好不要赋值,否则将多一次请求。
<li><img onmouseover="switch_product_img(this);"/></li>
例如: 第一个元素的 .src 值为http://...../images/01.jpg