93 lines
2.5 KiB
JavaScript
93 lines
2.5 KiB
JavaScript
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/**
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* This js provide a simple way to operate cookie in javascript
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* function getCookie(name);
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* function setCookie(name,value[,expireDays]);
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* function deleteCookie(name);
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*/
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function getCookie(name)
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{
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var arg = name + "=";
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var alen = arg.length;
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var clen = document.cookie.length;
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var i = 0;
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while (i < clen)
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{
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var j = i + alen;
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if (document.cookie.substring(i, j) == arg)
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return getCookieVal(j);
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i = document.cookie.indexOf(" ", i) + 1;
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if (i == 0) break;
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}
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return "";
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}
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function setCookie(name, value , expDay)
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{
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var argv = setCookie.arguments;
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var argc = setCookie.arguments.length;
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var expDay = (argc > 2) ? argv[2] : -1;
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try
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{
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expDay = parseInt(expDay);
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}
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catch(e)
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{
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expDay = -1;
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}
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if(expDay < 0) {
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setCookieVal(name, value);
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} else {
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var expDate = new Date();
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// The expDate is the date when the cookie should expire, we will keep it for a month
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expDate.setTime(expDate.getTime() + (expDay * 24 * 60 * 60 * 1000));
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setCookieVal(name, value, expDate);
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}
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}
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function deleteCookie(name)
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{
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var exp = new Date();
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exp.setTime(exp.getTime() - 1);
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// This cookie is history
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var cval = getCookie(name);
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document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
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}
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function getCookieVal(offset)
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{
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var endstr = document.cookie.indexOf(";", offset);
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if (endstr == -1)
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endstr = document.cookie.length;
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return unescape(document.cookie.substring(offset, endstr));
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}
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function setCookieVal(name, value)
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{
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var argv = setCookieVal.arguments;
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var argc = setCookieVal.arguments.length;
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var expires = (argc > 2) ? argv[2] : null;
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var path = (argc > 3) ? argv[3] : null;
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var domain = (argc > 4) ? argv[4] : null;
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var secure = (argc > 5) ? argv[5] : false;
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document.cookie = name + "=" + escape(value) +
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((expires == null || expires < 0) ? "" : ("; expires=" + expires.toGMTString())) +
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((path == null) ? "" : ("; path=" + path)) +
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((domain == null) ? "" : ("; domain=" + domain)) +
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((secure == true) ? "; secure" : "");
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}
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/**
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* 判断是否选中保存用户名
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* @param name
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*/
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function checkSubmit(name){
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if(document.getElementById("rememberme").checked){
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setCookie("username",document.getElementById("log").value,7);
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}else{
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deleteCookie("username");
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}
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}
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function loadCookies(){
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document.getElementById("log").value=getCookie("username");
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}
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