fix escape and unescape function not found

[declan1314]

Please makes sure the items are checked before submitting your PR, thank you!

• Rebase before creating a PR to keep commit history clear.
• Only One commit
• No eslint errors

[codecov-io]

Codecov Report

Merging #3624 into v2 will decrease coverage by 0.51%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              v2    #3624      +/-   ##
=========================================
- Coverage   19.5%   18.98%   -0.52%     
=========================================
  Files        226      226              
  Lines       5598     5598              
  Branches     725      725              
=========================================
- Hits        1092     1063      -29     
- Misses      4370     4417      +47     
+ Partials     136      118      -18

Impacted Files	Coverage Δ
src/libs/base.js	18.18% <0%> (-27.28%)	⬇️
src/components/x-input/index.vue	3.5% <0%> (-11.12%)	⬇️
src/components/x-img/index.vue	20% <0%> (-5%)	⬇️
src/components/selector/index.vue	15.9% <0%> (-4.55%)	⬇️
src/components/qrcode/index.vue	4.54% <0%> (-4.55%)	⬇️
src/components/blur/blur.js	64.51% <0%> (-2.16%)	⬇️

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