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<!-- 把下列代码加到<body>区域中 --> <!-- 二级联动 Start --> <script language="JavaScript"> <!-- var subcat = new Array(); subcat[0] = new Array('10','1','=1') subcat[1] = new Array('10','2','=2') subcat[2] = new Array('10','3','=3') subcat[3] = new Array('10','4','=4') subcat[4] = new Array('10','5','=5') subcat[5] = new Array('10','6','=6') subcat[6] = new Array('10','7','=7') subcat[7] = new Array('10','8','=8') subcat[8] = new Array('10','9','=9') subcat[9] = new Array('10','10','=10') subcat[10] = new Array('20','11','=11') subcat[11] = new Array('20','12','=12') subcat[12] = new Array('20','13','=13') subcat[13] = new Array('20','14','=14') subcat[14] = new Array('20','15','=15') subcat[15] = new Array('20','16','=16') subcat[16] = new Array('20','17','=17') subcat[17] = new Array('20','18','=18') subcat[18] = new Array('20','19','=19') subcat[19] = new Array('20','20','=20') function changeselect1(locationid) { <span class="visiblesaf0">do***ent.form1.s2.length</span> = 0; <span class="visiblesaf1">do***ent.form1.s2.options</span>[0] = new Option('==请选择==',''); for (i=0; i<<span class="visiblesaf2">su***t.length</span>; i++) { if (subcat[i][0] == locationid) {<span class="visiblesaf1">do***ent.form1.s2.options</span>[<span class="visiblesaf0">do***ent.form1.s2.length</span>] = new Option(subcat[i][1], subcat[i][2]);} } } //--> </script> <form name="form1"> 二级联动： <select name="s1" onChange="changeselect1(<span class="visiblesaf5">th***value</span>)"> <option>==请选择==</option> <option value="10">1-10</option> <option value="20">11-20</option> </select> <select name="s2" onChange="alert(<span class="visiblesaf5">th***value</span>)"> <option>==请选择==</option> </select> </form> <!-- 二级联动 Over --> <!-- 三级联动 Start --> <script language="JavaScript"> <!-- var subval = new Array(); subval[0] = new Array('10','单数','1','=1') subval[1] = new Array('10','双数','2','=2') subval[2] = new Array('10','单数','3','=3') subval[3] = new Array('10','双数','4','=4') subval[4] = new Array('10','单数','5','=5') subval[5] = new Array('10','双数','6','=6') subval[6] = new Array('10','单数','7','=7') subval[7] = new Array('10','双数','8','=8') subval[8] = new Array('10','单数','9','=9') subval[9] = new Array('10','双数','10','=10') subval[10] = new Array('20','单数','11','=11') subval[11] = new Array('20','双数','12','=12') subval[12] = new Array('20','单数','13','=13') subval[13] = new Array('20','双数','14','=14') subval[14] = new Array('20','单数','15','=15') subval[15] = new Array('20','双数','16','=16') subval[16] = new Array('20','单数','17','=17') subval[17] = new Array('20','双数','18','=18') subval[18] = new Array('20','单数','19','=19') subval[19] = new Array('20','双数','20','=20') function changeselect2() { <span class="visiblesaf7">do***ent.form2.s2.length</span> = 0; <span class="visiblesaf8">do***ent.form2.s2.options</span>[0] = new Option('==请选择==',''); <span class="visiblesaf8">do***ent.form2.s2.options</span>[1] = new Option('选择单数','单数'); <span class="visiblesaf8">do***ent.form2.s2.options</span>[2] = new Option('选择双数','双数'); <span class="visiblesaf11">do***ent.form2.s3.length</span> = 0; <span class="visiblesaf12">do***ent.form2.s3.options</span>[0] = new Option('==请选择==',''); } function changeselect3(sub1,sub2) { <span class="visiblesaf11">do***ent.form2.s3.length</span> = 0; <span class="visiblesaf12">do***ent.form2.s3.options</span>[0] = new Option('==请选择==',''); for (i=0; i<<span class="visiblesaf15">su***l.length</span>; i++) { if ((subval[i][0] == sub1) & (subval[i][1] == sub2)) {<span class="visiblesaf12">do***ent.form2.s3.options</span>[<span class="visiblesaf11">do***ent.form2.s3.length</span>] = new Option(subval[i][2], subval[i][3]);} } } //--> </script> <form name="form2"> 三级联动： <select name="s1" onChange="changeselect2()"> <option>==请选择==</option> <option value="10">1-10</option> <option value="20">11-20</option> </select> <select name="s2" onChange="changeselect3(<span class="visiblesaf18">do***ent.form2.s1.value</span>,<span class="visiblesaf5">th***value</span>)"> <option>==请选择==</option> </select> <select name="s3" onChange="alert(<span class="visiblesaf5">th***value</span>)"> <option>==请选择==</option> </select> </form> <!-- 三级联动 Over -->
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