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我有一個方法,當我刷新我的頁面時調用,並且該方法在數據庫中保存一個值。現在如果我刷新連續的頁面3-4次,然後在數據庫中存儲值3-4次。我想如果我連續刷新它3-4次,那麼它應該只在第一次被調用。如何讓一個方法被訪問只刷新一次在jquery
window.onbeforeunload = confirmClose;
function confirmClose() {
var refreshTime = new Date().getTime();
if (!isNaN(keyerAudit.auditStartTime) && (keyerAudit.auditStartTime != 0))
sessionStorage.setItem("FIRSTVISIT", refreshTime);
var refreshAuditTime = 0;
if (!isNaN(keyerAudit.auditStartTime) && (keyerAudit.auditStartTime != 0))
refreshAuditTime = (refreshTime - keyerAudit.auditStartTime)/1000.0;
if (!isNaN(refreshAuditTime) && (refreshAuditTime != 0)) {
sessionStorage.setItem("DB", refreshAuditTime);
$.ajax({
url: '/auditTimecalculate',
type: 'POST',
async: false,
dataType: "json",
data: {
auditTime: refreshAuditTime
},
success: function(data) {
console.log("returned from /auditTimecalculate ");
console.log("the before refresh starttime was: ", keyerAudit.auditStartTime);
sessionStorage.setItem("FIRSTVISIT", keyerAudit.auditStartTime);
// refreshTime=undefined;
refreshAuditTime = undefined;
}
});
}
您或者需要使請求idempotent,或者創建一個記錄請求已經被做的方法 - 比如'localStorage'中的一個標誌 –
那麼真正的問題是什麼? – PeterMader