我有一個時間/日期轉換器。例如,當用戶輸入「130」時,例如當他們輸入「6 7 16」時返回「06/07/2016 01:30:00」,例如返回「06/07/2016 00:00:00」,但當用戶輸入「6 7 16 130」爲例,它返回「2016年6月7日假:00」 這裏是我的相關代碼(可以顯示更多的如果需要的話):最後一個數組元素不斷返回false
function checkDateTime(val) {
var nowDate = new Date();
var month, day, year, time;
var ar;
if (eval(val)) {
var tval = val.value;
ar = tval.split(' ');
if (ar.length === 3) { // i.e. if it's supposed to be a date
ar[0] = month;
ar[1] = day;
ar[2] = year;
document.getElementById("FromDate").value = CheckDate(val) + ' ' + '00:00:00';
//checkDate(ar[0] + ' ' + ar[1] + ' ' + ar[2]);
}
//alert(LeftPadZero(ar[0]) + ' ' + LeftPadZero(ar[1]) + ' ' + LeftPadZero(ar[2]));
//alert(CheckDate(ar[0] + ' ' + ar[1] + ' ' + ar[2]));
if (ar.length === 1) { // if it's a time
ar[0] = time;
var MM = nowDate.getMonth() + 1;
var DD = nowDate.getDate();
var Y = nowDate.getFullYear();
var nowDateFormat = LeftPadZero(MM) + '/' + LeftPadZero(DD) + '/' + Y;
alert(ar[0]);
document.getElementById("FromDate").value = nowDateFormat + ' ' + checktime(val) + ':00';
}
if (ar.length === 4) { // if date and time
ar[0] = month;
// alert(ar[0]);
ar[1] = day;
// alert(ar[1]);
ar[2] = year;
// alert(ar[2]);
ar[3] = time;
// alert(ar[3]);
document.getElementById("FromDate").value = CheckDate(val) + ' ' + checktime(val) + ':00';
// alert(ar[0] + ' ' + ar[1] + ' ' + ar[2] + ' ' + ar[3]);
}
}
}
function CheckDate(theobj) {
var isInvalid = 0;
var themonth, theday, theyear;
var arr;
if (eval(theobj)) {
var thevalue = theobj.value;
arr = thevalue.split(" ");
if (arr.length < 2) {
arr = thevalue.split("/");
if (arr.length < 2) {
arr = thevalue.split("-");
if (arr.length < 2) {
isInvalid = 1;
}
}
}
if (isInvalid == 0) {
themonth = arr[0];
theday = arr[1];
if (arr.length == 3) {
theyear = arr[2];
} else {
theyear = new Date().getFullYear();
}
if (isNaN(themonth)) {
themonth = themonth.toUpperCase();
//month name abbreviation array
var montharr = ["JAN", "FEB", "MAR", "APR", "MAY", "JUN", "JUL", "AUG", "SEP", "OCT", "NOV", "DEC"];
for (i = 0; i < montharr.length; i++) {
//if the first 3 characters of month name matches
if (themonth.substring(0, 3) == montharr[i]) {
themonth = i + 1;
break;
}
}
} else {
if (themonth < 1 || themonth > 12) {
isInvalid = 1;
}
}
}
if (isNaN(themonth) || isNaN(theday) || isNaN(theyear)) {
isInvalid = 1;
}
if (isInvalid == 0) {
var thedate = LeftPadZero(themonth) + "/" + LeftPadZero(theday) + "/" + LeftPadZero(theyear);
return thedate;
} else {
return false;
}
}
}
function checktime(x) {
var tempchar = new String;
tempchar = MakeNum(x);
if (tempchar != '' && tempchar.length < 4) {
//e.g., if they enter '030' make it '0030'
if (tempchar.length == 3) {
tempchar='0' + tempchar;
}
//e.g, if they enter '11' make it '1100'
if (tempchar.length == 2) {
tempchar=tempchar + '00';
}
//e.g, if they enter '6' make it '0600'
if (tempchar.length == 1) {
tempchar='0' + tempchar + '00';
}
}
if (tempchar==null || tempchar == '') {
return false;
}
else {
if (tempchar=='2400') {
return false;
}else{
var tempnum= new Number(tempchar);
var swmin = new Number(tempnum % 100);
var swhour = new Number((tempnum-swmin)/100);
if (swhour < 25 && swmin < 60) {
x = LeftPadZero(swhour) + ":" + LeftPadZero(swmin);
return x;
}
else {
return false;
}
}
}
return false;
/*
if(eval(changecount)!=null){
changecount+=1;
}
*/
}
function MakeNum(x) {
var tstring = new String(x.value);
var tempchar = new String;
var f = 0;
for (var i = 0; i < tstring.length; i++) {
// walk through the string and remove all non-digits
chr = tstring.charAt(i);
if (isNaN(chr)) {
f=f;
}
else {
tempchar += chr;
f++;
}
}
return tempchar;
}
我已經試過無數的事情找出時間元素爲什麼在長度爲4的數組中返回false,但由於某種原因而不是數組長度1,包括設置各種警報並檢查控制檯。我多次搜索了這個問題,然後空着。
重申,我的問題是時間元素在4的數組中返回false,我試圖完成的是用戶輸入日期和時間,並使它們都格式化並正確顯示。
任何人都可以提供幫助和/或提供建議和/或建議嗎?謝謝!
編輯:用戶輸入'130'應該轉換爲'06/07/2016(今天的日期)01:30:00' 6 7 16應該轉換爲'06/07/2016 00:00:00' 6 7 16 130應該轉換爲'06/07/2016 01:30:00'
'的eval()'?那永遠不是一個好兆頭...... –
你是什麼意思? – Berz
他只是說使用eval不當會打開注入攻擊代碼等等。 –