在上一篇的基础上添加了一个小功能,验证文本框是否为空和数字

效果图

页面代码:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html><head><title>简单js验证</title><style type="text/css">body{background-color: White;}input{background-color: white;}</style><script type="text/javascript">var _errorimg = 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#d1af7bfunction body_load(){}//o: 对象的id, t:类型(error,help,info,warning), p:位置(top,left),m:输出消息function showInfo(o,t,p,m){if(!$(o)){return;}var _infobackgroundimg = _infoimg;switch(t){case "E":_infobackgroundimg = _errorimg;break;case "I":_infobackgroundimg = _infoimg;break;case "H":_infobackgroundimg = _helpimg;break;case "W":_infobackgroundimg = _warnigimg;break;}var _newdiv = window.document.createElement("div");_newdiv.style.position = "absolute";var iut = $(o);if($(o + "_newdiv")){$(o + "_newdiv").parentNode.removeChild($(o + "_newdiv"));}_newdiv.style.top = getTop(iut) + "px";_newdiv.style.left = getLeft(iut) + 16 + getWidth(iut) + "px"; var _weizhi = '<img style="position:absolute;left:-7px;top:3px;display:block;" src="'+_leftimg+'" />';if(p == "T"){_weizhi = '<img style="position:absolute; top:-7px; display:block;" src="'+_topimg+'" />';_newdiv.style.top = getTop(iut) + 16 + getHeight(iut) + "px";_newdiv.style.left = getLeft(iut) + "px"; }var _contentText = '<div onselectstart="return false;" οncοntextmenu="return false;" style="border:1px solid #f0f0f0;background-color:#e0e0e0;position:relative;padding-bottom:2px; padding-right:2px; font-size:12px; margin-left:6px; margin-top:0px;"><div style="padding:3px; cursor:default;border:1px solid '+_divbordercolor+';background-color:'+_divbackgroundcolor+';position:relative; margin-left:-6px; margin-top:-6px;"><table cellpadding="0" cellspacing="0" border="0"><tr><td align="right" style="width:18px;" valign="top"><img style="" src="' +_infobackgroundimg+'" />'+_weizhi+'</td><td style="width:3px;"></td><td style="padding-left:3px;padding-right:3px;white-space:nowrap;">'+m+'</td><td style="width:18px; padding-top:0px;" valign="top" align="right"><img src="'+_closeimg+'" οnclick="closeInfo(\''+o+ '\');" style="cursor:pointer;" /></td><td style="width:6px;"></td></tr></table></div></div>';_newdiv.id = o + "_newdiv";_newdiv.innerHTML = _contentText;window.document.body.appendChild(_newdiv);}//o: 对象idfunction closeInfo(o){if($(o + "_newdiv")){$(o + "_newdiv").parentNode.removeChild($(o + "_newdiv"));}}//获取文本框的位置//对象距离左面的距离function getLeft(o){var _oLeft = o.offsetLeft;while(o.offsetParent!=null) { var _oParent = o.offsetParent;_oLeft += _oParent.offsetLeft;o = _oParent;}return _oLeft;}//对象距离上面的距离function getTop(o){var _oTop = o.offsetTop;while(o.offsetParent!=null) { var _oParent = o.offsetParent;_oTop += _oParent.offsetTop;o = _oParent;}return _oTop;}//对象高度function getHeight(o){return o.clientHeight;}//对象的宽度function getWidth(o){return o.clientWidth;}//获取对象function $(o){return window.document.getElementById(o);}//添加事件,o:对象,n:事件名称,f事件方法function addEvent(o,n,f){if(o){if (window.attachEvent) {o.attachEvent("on" + n, f);}else{o.addEventListener(n, f, false);}}}        //验证文本框//文本框获得焦点 p1: 对象id, p2: 输出内容, p3: 类型function txtFocus(p1,p2,p3){removeimage(p1);showInfo(p1,'I','',p2);}//文本框失去焦点 p1: 对象id p3: 输出内容, p2: 类型function txtBlur(p1,p3,p2){addimage(p2,$(p1),p1,p3);closeInfo(p1);}//添加图片p1: 类型(N:数字), p2:对象, p3:对象id, p4:输出内容function addimage(p1,p2,p3,p4){if(p1 == "N"){if(p2.value == "" || isNaN(p2.value)){createImage(p3,"E",p4);}else{createImage(p3,"T",p4);}}else{if(p2.value == ""){createImage(p3,"E",p4);}else{createImage(p3,"T",p4);}}}//移除图片对象: o:对象idfunction removeimage(o){if($(o + "_newimg")){$(o + "_newimg").parentNode.removeChild($(o + "_newimg"));}}//o:名称 , t: 类型,(E:错误,T:正确) , c: 内容function createImage(o,t,c){if(!$(o)){return;}var _infobackgroundimg = _valueerrorimg;switch(t){case "E":_infobackgroundimg = _valueerrorimg;break;case "T":_infobackgroundimg = _valuetrueimg;break;}var _newdiv = window.document.createElement("img");_newdiv.style.position = "absolute";var iut = $(o);if($(o + "_newimg")){$(o + "_newimg").parentNode.removeChild($(o + "_newimg"));}_newdiv.id = o + "_newimg";_newdiv.style.top = getTop(iut) + "px";_newdiv.style.left = getLeft(iut) + 8 + getWidth(iut) + "px"; _newdiv.src = _infobackgroundimg;if(t == "E"){_newdiv.setAttribute("onmousemove",document.all &&　!document.documentMode ? eval(function(){showInfo(o + "_newimg",'W','',c);}): "showInfo('"+ o + "_newimg','W','','"+c+"');");_newdiv.setAttribute("onmouseout",document.all &&　!document.documentMode ? eval(function(){closeInfo(o + "_newimg");}):"closeInfo('"+ o + "_newimg');");}else{_newdiv.title = "验证通过";}window.document.body.appendChild(_newdiv);}////文本框加载事件 arry:文本框的集合对象//function textsLoad(arry){if(arry){_t_lis = arry;//为最终查看使用for(var i=0;i<arry.length;i++){var txtid = arry[i][0];var txttxt = arry[i][1];var obj = $(txtid);addimage(arry[i][2],obj,txtid,txttxt);obj.setAttribute("onfocus",document.all &&　!document.documentMode ?eval(function(){txtFocus(txtid,txttxt,arry[i][2]);}) :"txtFocus('"+txtid+"','"+txttxt+"','"+arry[i][2]+"');");obj.setAttribute("onblur",document.all &&　!document.documentMode ? eval(function(){txtBlur(txtid,txttxt,arry[i][2]);}):"txtBlur('"+txtid+"','"+txttxt+"','"+arry[i][2]+"');");}}}var _t_lis = null;//获得结果function retrunValue(){if(_t_lis){for(var i=0;i<_t_lis.length;i++){var obj = $(_t_lis[i][0]);if(obj){if(_t_lis[i][2] == "N"){if(obj.value == "" || isNaN(obj.value)){obj.focus();return false;}}else{if(obj.value == ""){obj.focus();return false;}}}}}return true;}</script><script type="text/javascript">window.onload = function(){var txtlist = new Array(new Array("txtname","姓名不能为空!",""),new Array("txtphone","手机号不能为空!",""),new Array("txtage","年龄必须为数字!","N") //参数1: 文本框的id, 参数2: 输出的字符串, 参数3: 为空则是为空判断,如果为N则是数字判断);textsLoad(txtlist);//调用textsLoad(array)方法加载文本}function resubmit(){if(retrunValue()){//调用retrunValue()方法检查是否满足条件alert("提交成功");}else{alert("提交失败");}}</script></head><body><div style=""><input id="txtname" type="text" value="" /><br /><input id="txtphone" type="text" value="110"/><br /><input id="txtage" type="text" value=""/><br /><input type="button" value="提交" id="butsubmit" οnclick="resubmit();" /><div id="detaildiv" οnmοuseοver="showInfo('detaildiv','H','T','这里是帮助按钮!<br>请输入所以的信息!<br><font color=\'red\'>(全部不能为空!)</font><br><font color=\'green\'>(请点击关闭按钮关闭该提示!)</font>');" style="width:20px; height:20px; border:1px solid green; cursor:pointer;float:left;margin-left:8px;margin-right:8px;" align="center">?</div></div></body>
</html>

转载于:https://www.cnblogs.com/weloglog888/archive/2012/12/25/2832794.html

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