js文本框不能输入字符
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"><script type="text/javascript">//只能输入0-9的数字function numbercheckKey(key) {if(!(key>=96 && key<=105 || key>=48 && key<=57)){event.returnValue=false;}var number = document.getElementsByName("number").value;if(number.length>9){event.returnValue=false;}//这句话必须放到后面.不然的话得不到执行if(key==8){event.returnValue=true;}}//可以输入小数类型的数字function floatNumberCheck(key){if(!(key>=96 && key<=105 || key>=48 && key<=57)){event.returnValue=false;}var number = document.getElementsByName("floatNumber").value;if(key==110 || key==8){event.returnValue=true;}}function showHidde(){obj = document.getElementsByName("checkbox");if(obj.checked==true){document.getElementsByName("info").style.display="block";} else {document.getElementsByName("info").style.display="none";}}function aa(){var va = confirm("是否提交");if(va){alert("提交了");} else {alert("取消了提交");}}function change(value,del) {//alert(del);document.getElementById(del).style.color=value;}</script><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><title>无标题文档</title><style type="text/css"><!--.style2 {color: #993399}--></style></head><body><form name="form1" method="post" action=""><p>只能输入数字: <input type="text" name="number" onKeyDown="numbercheckKey(event.keyCode)"></p><p>可以输入小数: <input name="floatNumber" type="floatNumber" onKeyDown="floatNumberCheck(event.keyCode)"></p><p>&nbsp;</p> <p> <input type="checkbox" name="checkbox" value="checkbox" > 请填写信息</p><p> <input type="text" name="info" style="display:none"></p><p><input type="button" name="kk" value="确认窗体" ></p><ponmouseout="change('#FFFFFF','del1')" onmouseDown="change('#000000','del1')" ><span id="del1">变色给你看</span></p><ponmouseout="change('black','del2')" onmouseDown="change('blue','del2')" ><span id="del2">变色给你看2</span></p></form><p>&nbsp;</p></body></html>
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