Простой калькулятор

{"draftJsState":{"blocks":[{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"Очень простой код Javascript . В интернете калькуляторов очень много , найти нужный не проблема . Здесь даются коды для изучающих html , css, javascript , желающих лучше понимать как всё работает.","type":"unstyled","key":"c14r6"},{"data":{},"depth":0,"entityRanges":[{"key":0,"length":5,"offset":37}],"inlineStyleRanges":[],"text":"Работу калькулятора можно посмотреть здесь .","type":"unstyled","key":"fd2ij"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"pgae"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"8ql"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"f443f"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"cahg"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"Простой калькулятор","type":"unstyled","key":"avk33"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"6qcek"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"92ogc"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"78nvv"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"

","type":"unstyled","key":"1a2cf"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"

","type":"unstyled","key":"el8q8"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"

","type":"unstyled","key":"7lk7m"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"c4cbh"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"7bcnk"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"13bbd"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"5p4ii"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"6p4qm"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"
","type":"unstyled","key":"5735f"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"45k49"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"8rmc3"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"4voof"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"f32s1"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"
","type":"unstyled","key":"9bqn5"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"6dtg4"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"3kob4"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"o9r0"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"5h4s2"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"
","type":"unstyled","key":"5na03"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"3hlu7"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"7oo6n"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"ofo4"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"589cf"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"

","type":"unstyled","key":"8tk2j"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"ahcdf"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"f4g6v"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"5i1q4"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"unstyled","key":"cgspo"},{"data":{},"depth":0,"entityRanges":[],"inlineStyleRanges":[],"text":"","type":"marker","key":"vbq2ijrh0onM8xqt8Uuj"}],"entityMap":{"0":{"data":{"url":"https://yashelkul.ucoz.net/calculator.html"},"mutability":"MUTABLE","type":"LINK"}}},"mentions":[]}