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1、JavaScript实现CheckBox选中方法JavaScript实现CheckBox选中所有的项的方法的文章很少见，这是笔者精心为大家准备的礼物，代码的借鉴性很高，也很好理解，希望能给大家带来帮助。JavaScript实现CheckBox选中所有的项的方法：1. 2.
3.
4.</<SPAN>title> 5.<body> 6.<form name="Form1"> 7.<input name="allbox" type="checkbox" onClick="TA();" title="选中</p><p>2、或清除选中所有的项目" tabindex="105">选中或清除选中所有的项目 8.<br/> 9.<span class="X"> 10.<input type="checkbox" name="ABC" class="A" onClick="TTA(this);">清明时节</<SPAN>span> 11.<br/> 12.<span class="X"> 13.<input type="checkbox" name="DEF" class="A" onClick="TTA(this);">长江水啊</<SPAN>span> 14.</p><p>3、<br/> 15.<span class="X"> 16.<input type="checkbox" name="GHL" class="A" onClick="TTA(this);">嘿嘿测试</<SPAN>span> 17.<br/> 18.</<SPAN>form> 19.<script language="javascript"> 20.var frm = document.Form1; 21.</<SPAN>script> 22.<script language="JavaScript"> 23.function TA(is</p><p>4、O,noHL){ 24. var trk = 0; 25. for(var i=0;i<frm.elements.length;i++){ 26. var e=frm.elements[i]; 27. if((e.name !='allbox') && (e.type == 'checkbox')){ 28. e.checked = frm.allbox.checked; 1. if (frm.allbox.checked){ 2. //e.parentElement.className = "H"; //.pare</p><p>5、ntElement不兼容firefox浏览器 3. e.parentNode.className = "H";//调用设置父节点元素class改变背景色 4. }else{ 5. e.parentNode.className = "X";//调用设置父节点元素class改变背景色 6. } 7. } 8. } 9.} 10.function TTA(CB,noHL){ 11. if (CB.checked){ 12. CB.parentNode.className = "H"; 13. }else{ 14. </p><p>6、CB.parentNode.className = "X"; 15. } 16. var TB=TO=0; 17. for (var i=0;i<frm.elements.length;i++){ 18. var e=frm.elements[i]; 19. if ((e.name != 'allbox') && (e.type=='checkbox')){ 20. TB++; 21. if (e.checked) 22. TO++; 23. } 24. } 25. frm.allbox.checked=(TO==TB)</p><p>7、?true:false; 26. //如果不是所有项被选中则allbox设定未被选中 27.} 28.</<SPAN>script> 29.<style> 30..H{ 31. background: #ADD8E6 32.} 33..X{ 34. background: #FFFFFF 35.} 36.</<SPAN>style> 37.</<SPAN>body></<SPAN>html> 以上就是对JavaScript实现CheckBox选中所有的项方法的简单介绍。</p> </div>
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