4

我目前正在根据从单选按钮中选择的值显示图像。但是我目前正在使代码尽可能简短和高效。我有几个类别可供选择，我处理这个问题的方式需要我写几个check_value#。有没有办法将这两个功能结合起来？所以将来如果我有 5 或 7 个类别，我将不必为每个类别设置一个功能。例子 

<script>
 function check_value(val) {     
    var el = document.getElementById("imgBox1");
    var img = imgs[val];
    if (val>0 && val<4) { //will trigger when [1,2,3]
        el.src = "images/bike" + val + ".jpg";
        el.style.display = "";
    }    
}

 function check_value1(val) {    
    var el = document.getElementById("imgBox2");
    var img = imgs[val];
    if (val>0 && val<4) { //will trigger when [1,2,3]
        el.src = "images/tire" + val + ".jpg";
        el.style.display = "";
    }    
}
</script>

HTML

<h2>Choose a bike</h2>
    <form name="builder">
        <input type="radio" name="field" value="1" onclick='check_value(0)'/> KAWASAKI KX 450F<br />
         <input type="radio" name="field" value="2" onclick='check_value(1)'/> 2010 Yamaha Road Star S<br />
         <input type="radio" name="field" value="3" onclick='check_value(2)'/> Aprilia RSV4<br />
    </form>

<img id="imgBox1" src="#" style="display:none"> 

<h2>Choose a tire</h2>  
    <form name="tire">
        <input type="radio" name="field" value="1" onclick='check_value1(0)'/> Michelin Pilot Road 3 Tires<br />
        <input type="radio" name="field" value="2" onclick='check_value1(1)'/> Dunlop Roadsmart Sport-Touring Tires<br />
         <input type="radio" name="field" value="3" onclick='check_value1(2)'/> Pirelli Scorpion Trail Tires<br />
    </form>

<img id="imgBox2" src="#" style="display:none">
4

3 回答 3

1

这是一个使用自定义 HTML 属性和jQuery Javascript 库的小提琴：

显然，您希望实际设置图像的来源，而不是在段落中显示 url，但您明白了，我敢肯定。

// html
<input type="radio" name="tire" img-preview="tire-preview" img-loc="tire/1.jpg" /> First<br>
<input type="radio" name="tire" img-preview="tire-preview" img-loc="tire/2.jpg" /> Second<br>
<p id="tire-preview">
Load: -
</p>
<input type="radio" name="wheel" img-preview="wheel-preview" img-loc="wheel/1.jpg" /> Uno<br>
<input type="radio" name="wheel" img-preview="wheel-preview" img-loc="wheel/2.jpg" /> Dos<br>
<p id="wheel-preview">
Load: -
</p>​

// js
$("input[type=radio]").click(function(){

    var imageUri = "http://site.com/images/" + $(this).attr("img-loc");

    $("#" + $(this).attr("img-preview") ).text("Load: " + imageUri);

});​
于 2012-09-08T04:06:42.470 回答
1

试试这个，更新了

将图像名称设为bike#.jpg、tire#.jpg bike0.jpg、bike1.jpg、bike2.jpg....

function check_value(val, id, type) {     
    var el = document.getElementById("imgBox" + id);
    if (val>0 && val<4) { //will trigger when [1,2,3]
       el.src = "images/"+ type + val + ".jpg";
       el.style.display = "";
  }

}

<h2>Choose a bike</h2>
<form name="builder">
    <input type="radio" name="field" value="1" onclick='check_value(0, 1, "bike")'/> KAWASAKI KX 450F<br />
     <input type="radio" name="field" value="2" onclick='check_value(1, 1, "bike")'/> 2010 Yamaha Road Star S<br />
     <input type="radio" name="field" value="3" onclick='check_value(2, 1, "bike")'/> Aprilia RSV4<br />
</form>

<img id="imgBox1" src="#" style="display:none"> 

<h2>Choose a tire</h2>  
<form name="tire">
    <input type="radio" name="field" value="1" onclick='check_value(0, 2, "tire")'/> Michelin Pilot Road 3 Tires<br />
    <input type="radio" name="field" value="2" onclick='check_value(1, 2, "tire")'/> Dunlop Roadsmart Sport-Touring Tires<br />
    <input type="radio" name="field" value="3" onclick='check_value(2, 2, "tire")'/> Pirelli Scorpion Trail Tires<br />
</form>

<img id="imgBox2" src="#" style="display:none">
于 2012-09-08T04:15:22.857 回答
0

你可以用这个

<script>
function call(formNo,val)
  {if()//give your checkings here according to what you want
    {}
    alert(formNo+" "+val); //just for example what values you are getting
   }
</script>

<h2>Choose a bike</h2>
<form name="builder" id="1">
    <input type="radio" name="field" value="1" onclick='check_value(1,0)'/> KAWASAKI KX 450F<br />
     <input type="radio" name="field" value="2" onclick='check_value(1,1)'/> 2010 Yamaha Road Star S<br />
     <input type="radio" name="field" value="3" onclick='check_value(1,2)'/> Aprilia RSV4<br />
</form>
<img id="imgBox1" src="#" style="display:none"> 
<h2>Choose a tire</h2>  
<form name="tire" id="2">
    <input type="radio" name="field" value="1" onclick='check_value1(2,0)'/> Michelin Pilot Road 3 Tires<br />
    <input type="radio" name="field" value="2" onclick='check_value1(2,1)'/> Dunlop Roadsmart Sport-Touring Tires<br />
     <input type="radio" name="field" value="3" onclick='check_value1(2,2)'/> Pirelli Scorpion Trail Tires<br />
</form>
<img id="imgBox2" src="#" style="display:none">
于 2012-09-08T04:45:45.900 回答