踩到Window resize在Preview print的雷
最近在作案的過程中遇到一個狀況,從Art design那邊拿到的頁面,會在Window resize的時候執行某個Function,本來一切都正常,但測試到Chrome和Firefox預覽列印時發現也會Trigger這個Event,會讓在預覽列印過後的頁面發生問題,所以必須要進行修正,以下是這個案例的說明:
先在測試頁加入以下的程式,發現在預覽列印的時候會Trigger window resize event:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>Preview Print Test</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script> $(window).resize(function() { console.log("Window Resize"); }); </script> </head> <body> <h1>Window Resize Test</h1> </body> </html>
網路上搜尋了一下解決方案,將Script改寫如下,可以順利解決,但不知道是不是最好的方法,如果大家有更好的也別忘了告訴我唷~
openResizeFn(); // Chorme var print = false; var mediaQueryList = window.matchMedia('print'); mediaQueryList.addListener(function (mql) { if (mql.matches) { closeResizeFn(); } else { setTimeout(openResizeFn, 2000); } }); // Firefox window.onbeforeprint = function () { closeResizeFn(); }; window.onafterprint = function () { setTimeout(openResizeFn, 2000); }; // Common Function function openResizeFn() { $(window).on("resize", windowResize); } function closeResizeFn() { $(window).off("resize", windowResize); } function windowResize() { console.log("Window Resize"); }
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