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But they are in Javascript! Both map and forEach were added in 2009 as part of ES5. Problem is they weren't supported in IE until IE9. http://kangax.github.io/

by spikels 13y ago

But they are in Javascript! Both map and forEach were added in 2009 as part of ES5. Problem is they weren't supported in IE until IE9. http://kangax.github.io/es5-compat-table/ http://kangax.github.io/es5-compat-table/