javascript商品,JavaScript商品数量增加
javascript调用商品信息，没有反应。高手帮看下。那里出了问题。10个商品中就有3个没有反应的。感动中
这些类似很乱的标签和提示应该是用后台程序显示的，可以看到里面有明显的出错信息，建议查看后台程序接口是否有错误。
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利用js动态生成一个简单的商品详情页
使用jquery： var $div=$('');var content="动态创建的内容";$div.html(content); //会替换所有子元素或文本节点使用javascript：var div = document.createElement('div');var content = document.createTextNode("动态创建的内容");div.appendChild(content);
JavaScript 商品展示图片左右滚动代码怎么写？
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""
html xmlns=""
head
meta http-equiv="Content-Type" content="text/html; charset=gb2312" /
titleJavaScript 图片滑动切换效果/title
script type="text/javascript"
var $ = function (id) {
return "string" == typeof id ? document.getElementById(id) : id;
};
var Extend = function(destination, source) {
for (var property in source) {
destination[property] = source[property];
}
return destination;
}
var CurrentStyle = function(element){
return element.currentStyle || document.defaultView.getComputedStyle(element, null);
}
var Bind = function(object, fun) {
var args = Array.prototype.slice.call(arguments).slice(2);
return function() {
return fun.apply(object, args.concat(Array.prototype.slice.call(arguments)));
}
}
var Tween = {
Quart: {
easeOut: function(t,b,c,d){
return -c * ((t=t/d-1)*t*t*t - 1) + b;
}
},
Back: {
easeOut: function(t,b,c,d,s){
if (s == undefined) s = 1.70158;
return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
}
},
Bounce: {
easeOut: function(t,b,c,d){
if ((t/=d) (1/2.75)) {
return c*(7.5625*t*t) + b;
} else if (t (2/2.75)) {
return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
} else if (t (2.5/2.75)) {
return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
} else {
return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
}
}
}
}
//容器对象,滑动对象,切换数量
var SlideTrans = function(container, slider, count, options) {
this._slider = $(slider);
this._container = $(container);//容器对象
this._timer = null;//定时器
this._count = Math.abs(count);//切换数量
this._target = 0;//目标值
this._t = this._b = this._c = 0;//tween参数
this.Index = 0;//当前索引
this.SetOptions(options);
this.Auto = !!this.options.Auto;
this.Duration = Math.abs(this.options.Duration);
this.Time = Math.abs(this.options.Time);
this.Pause = Math.abs(this.options.Pause);
this.Tween = this.options.Tween;
this.onStart = this.options.onStart;
this.onFinish = this.options.onFinish;
var bVertical = !!this.options.Vertical;
this._css = bVertical ? "top" : "left";//方向
//样式设置
var p = CurrentStyle(this._container).position;
p == "relative" || p == "absolute" || (this._container.style.position = "relative");
this._container.style.overflow = "hidden";
this._slider.style.position = "absolute";
this.Change = this.options.Change ? this.options.Change :
this._slider[bVertical ? "offsetHeight" : "offsetWidth"] / this._count;
};
SlideTrans.prototype = {
//设置默认属性
SetOptions: function(options) {
this.options = {//默认值
Vertical: true,//是否垂直方向（方向不能改）
Auto: true,//是否自动
Change: 0,//改变量
Duration: 50,//滑动持续时间
Time: 10,//滑动延时
Pause: 2000,//停顿时间(Auto为true时有效)
onStart: function(){},//开始转换时执行
onFinish: function(){},//完成转换时执行
Tween: Tween.Quart.easeOut//tween算子
};
Extend(this.options, options || {});
},
//开始切换
Run: function(index) {
//修正index
index == undefined (index = this.Index);
index 0 (index = this._count - 1) || index = this._count (index = 0);
//设置参数
this._target = -Math.abs(this.Change) * (this.Index = index);
this._t = 0;
this._b = parseInt(CurrentStyle(this._slider)[this.options.Vertical ? "top" : "left"]);
this._c = this._target - this._b;
this.onStart();
this.Move();
},
//移动
Move: function() {
clearTimeout(this._timer);
//未到达目标继续移动否则进行下一次滑动
if (this._c this._t this.Duration) {
this.MoveTo(Math.round(this.Tween(this._t++, this._b, this._c, this.Duration)));
this._timer = setTimeout(Bind(this, this.Move), this.Time);
}else{
this.MoveTo(this._target);
this.Auto (this._timer = setTimeout(Bind(this, this.Next), this.Pause));
}
},
//移动到
MoveTo: function(i) {
this._slider.style[this._css] = i + "px";
},
//下一个
Next: function() {
this.Run(++this.Index);
},
//上一个
Previous: function() {
this.Run(--this.Index);
},
//停止
Stop: function() {
clearTimeout(this._timer); this.MoveTo(this._target);
}
};
/script
/head
body
style type="text/css"
.container,.container img {
width: 280px;
height: 200px;
}
.container {
border: 1px solid #333;
}
.container img {
border: 0;
}
/style
div class="container" id="idContainer"
table id="idSlider" border="0" cellpadding="0" cellspacing="0"
tr
td
img src="image/11.jpg" /
/td
/tr
tr
td
img src="image/di.jpg" /
/td
/tr
tr
td
img src="image/head.gif" /
/td
/tr
/table
/div
br /
br /
style type="text/css"
.num {
position: absolute;
right: 5px;
bottom: 5px;
}
.num li {
float: left;
list-style: none;
color: #fff;
text-align: center;
line-height: 16px;
width: 16px;
height: 16px;
font-family: Arial;
font-size: 12px;
cursor: pointer;
margin: 1px;
border: 1px solid #707070;
background-color: #060a0b;
}
.num li.on {
line-height: 18px;
width: 18px;
height: 18px;
font-size: 14px;
border: 0;
background-color: #ce0609;
font-weight: bold;
}
/style
div class="container" id="idContainer2"
table id="idSlider2" border="0" cellpadding="0" cellspacing="0"
tr
td
img src="image/11.jpg" /
/td
td
img src="image/di.jpg" /
/td
td
img src="image/head.gif" /
/td
/tr
/table
ul class="num" id="idNum"
/ul
/div
br /
div
input id="idAuto" type="button" value="停止" /
input id="idPre" type="button" value="" /
input id="idNext" type="button" value="" /
select id="idTween"
option value="0"
默认缓动
/option
option value="1"
方式1
/option
option value="2"
方式2
/option
/select
/div
script
new SlideTrans("idContainer", "idSlider", 3).Run();
///////////////////////////////////////////////////////////
var forEach = function(array, callback, thisObject){
if(array.forEach){
array.forEach(callback, thisObject);
}else{
for (var i = 0, len = array.length; i len; i++) { callback.call(thisObject, array[i], i, array); }
}
}
var st = new SlideTrans("idContainer2", "idSlider2", 3, { Vertical: false });
var nums = [];
//插入数字
for(var i = 0, n = st._count - 1; i = n;){
(nums[i] = $("idNum").appendChild(document.createElement("li"))).innerHTML = ++i;
}
forEach(nums, function(o, i){
o.onmouseover = function(){ o.className = "on"; st.Auto = false; st.Run(i); }
o.onmouseout = function(){ o.className = ""; st.Auto = true; st.Run(); }
})
//设置按钮样式
st.onStart = function(){
forEach(nums, function(o, i){ o.className = st.Index == i ? "on" : ""; })
}
$("idAuto").onclick = function(){
if(st.Auto){
st.Auto = false; st.Stop(); this.value = "自动";
}else{
st.Auto = true; st.Run(); this.value = "停止";
}
}
$("idNext").onclick = function(){ st.Next(); }
$("idPre").onclick = function(){ st.Previous(); }
$("idTween").onchange = function(){
switch (parseInt(this.value)){
case 2 :
st.Tween = Tween.Bounce.easeOut; break;
case 1 :
st.Tween = Tween.Back.easeOut; break;
default :
st.Tween = Tween.Quart.easeOut;
}
}
st.Run();
/script
/body/html
用javascript怎么一次计算多个商品总价
是要多个值相加求和么？ 举个例子：两个值相加，第一个值的id定为fId、第二个值的id定为sId。JavaScript中写个方法
JavaScript...
function sum(){
var id1=document.getElementById("fId").value;
var id2=document.getElementById("sId").value;
//两个值相加即可，注意转换为double型的
}
/JavaScript
然后jsp下面在调用这个方法就好了 在哪调用就是你的事了
当前题目：javascript商品,JavaScript商品数量增加
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