//這是一個(gè)驗(yàn)證正整數(shù)包括小數(shù)的JS腳本。求同！//校驗(yàn)輸入內(nèi)容為實(shí)數(shù)function CheckNewReal(obj){ var parent = obj.parentNode; //清空錯(cuò)誤信息，重新校驗(yàn) clearMassage(obj); var length = 20; var tempValue = obj.value;? var patten = /^-?\d+\.?\d*$/; if(tempValue.match(patten) && tempValue.length <= length){ return true; }else if(tempValue.length > length){ var massageObj=document.createElement("div"); massageObj.setAttribute("id","errorMassage"); massageObj.innerHTML="輸入的內(nèi)容不能超過"+length+"個(gè)字符"; massageObj.style.color= "red"; parent.insertBefore(massageObj,obj); obj.style.color = "black";? ? ? ? obj.style.border = "1px solid #e50000";? ? ? ? return false; }else if(tempValue.length == 0){ obj.value = "0.0"; }else{ var massageObj=document.createElement("div"); massageObj.setAttribute("id","errorMassage"); massageObj.innerHTML="內(nèi)容只能為整數(shù)或小數(shù)"; massageObj.style.color= "red"; parent.insertBefore(massageObj,obj); obj.style.color = "black";? ? ? ? obj.style.border = "1px solid #e50000";? ? ? ? return false; }}