wxml-to-canvas在真机预览中显示不出来?
runtime.js?devtools_ignore=true:1 eval script evaluate_id #22 failed TypeError: n.Canvas is not a constructor at t.value (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:2224227) at t.value (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:1866006) at A (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:1866172) at v (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:1864345) at eval (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:2223060) at eval (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:2128430) at Object.B (eval at n.call.document (runtime.js?devtools_ignore=true:1), <anonymous>:2:78259) at we (runtime.js?devtools_ignore=true:1) at eval (eval at X (runtime.js?devtools_ignore=true:1), <anonymous>:1:17) at eval (<anonymous>) value @ runtime.js?devtools_ignore=true:1 X @ runtime.js?devtools_ignore=true:1 he @ runtime.js?devtools_ignore=true:1 Ce.onmessage @ runtime.js?devtools_ignore=true:1
