TypeError document getElementbyId is not a function

Question

In the following snippet everything works as expected  but when I click  Show Source  Firefox produces this error    --  11 07 30 630  TypeError  document getElementbyId is not a function   http   localhost 8888 html5 native-rich-text html 10   And Safari produces a similar error  What is causing this    x000D   x000D  function showSource     x000D    var content   document getElementbyId  edit   innerHTML x000D    content replace   lt  g    amp lt     x000D    content replace   gt      amp gt      x000D    prompt  Your Code    content   x000D   x000D    x000D   x000D  function createLink     x000D    var url   prompt  Enter URL     http       x000D    if  url  x000D      document execCommand  createlink   false  url   x000D    x000D   lt h1 gt Native Rich Text lt  h1 gt  x000D   lt p gt No textboxes here  that s a  amp lt div amp gt  element  lt  p gt  x000D   lt div gt  x000D     lt input type  button  value  Bold  onclick  document execCommand  bold   false  null    gt  x000D     lt input type  button  value  Italic  onclick  document execCommand  italic   false  null    gt  x000D     lt input type  button  value  Underline  onclick  document execCommand  underline   false  null    gt  x000D     lt input type  button  value  Add Link  onclick  createLink     gt  x000D     lt input type  button  value  Show Source  onclick  showSource     gt  x000D   lt  div gt  x000D   lt div id  edit  style  border solid black  height  300px  width  400px   contenteditable  true  gt  x000D    Hello  x000D   lt  div gt  x000D   x000D   x000D

User · Accepted Answer

Case sensitive  document getElementById  notice the capital B

User · Answer

JavaScript is case-sensitive  The b in getElementbyId should be capitalized   var content   document getElementById  edit   innerHTML

[javascript] TypeError: document.getElementbyId is not a function

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