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儒家二级联动
<br> var seljia = document.getELementsById("jia");<br> var jiaArr = ["请选择","儒家","佛家","道家"];<br> var exampleArr = [<br> ["请选择"],<br> ["孔子","论语","三字经"],<br> ["释迦摩尼","金刚经","冷颜经"],<br> ["老子","庄子","北斗经"]<br> ];<br> window.onload = function(){<br> // alert("haha");</p> <pre><code> seljia.length = jiaArr.length; for(var i = 0;i<jiaArr.length;i++){ seljia.option[i].text = jiaArr[i]; seljia.option[i].value = jiaArr[i]; } function ChangeExampleSelect(index){ var selExa = document.getElementById("example"); selExa.length = exampleArr[index].length; for(var i =0;i<exampleArr[index].length;i++){ selExa.options[i].text = exampleArr[index][i]; selExa.options[i].value = exampleArr[index][i]; } } } </script> </code></pre> <p></head><br> <body></p> <!-- 返回当前选项的下表索引值 --> <pre><code><select id="jia" onchange="ChangeExampleSelect(this.selectedIndex)"> </select> <select id="example"> </select> </code></pre> <p></body><br> </html></p>