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javascript - jade/pug? ?? ??? ??? ??? getContext('2d')? ???? null? ?????.
為情所困
為情所困 2017-05-19 10:40:25
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? ????? pug? ???? ??? ??? ???? ??? ?? ??? ??????

????

??? js? ???? ? ??? ?? ? getContext('2d')? ???? null? ?????.
??? ???? <canvas class="work-item_Background_canvas">
??? ???? ?????.

為情所困
為情所困

?? ??(1)
某草草

?? ?? ??? ??? ????? ?? ??? HTML ELEMENT? ????? ???? ???. ??? ??? ??? html? ????? ?????. ? HTML ELEMENT.code>dom?? js ???? api??? ?? ??? ???? ???. HTML ELEMENT,模版引擎最終都是生成html的,確定真的有這個dom,那就一定是js運行時的api或者哪里寫錯了。

題目感覺不清楚,但是應(yīng)該跟pug的關(guān)系不大,檢查一下canvas相關(guān)的api

??? ???? ???? pug?? ??? ?? ?? ? ????. canvas? ??? api ??? ??? ??? ?????. . ??