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var ferrisTypes = [
{
attr : 'does_not_compile' ,
title : '这些代码不能编译！'
} ,
{
attr : 'panics' ,
title : '这些代码会 panic！
} ,
{
attr : 'not_desired_behavior' ,
title : '这些代码不会产生期望的行为。'
}
]
document . addEventListener ( 'DOMContentLoaded' , ( ) => {
for ( var ferrisType of ferrisTypes ) {
attachFerrises ( ferrisType )
}
} )
function attachFerrises ( type ) {
var elements = document . getElementsByClassName ( type . attr )
for ( var codeBlock of elements ) {
var lines = codeBlock . textContent . split ( /\r|\r\n|\n/ ) . length - 1 ;
if ( lines >= 4 ) {
attachFerris ( codeBlock , type )
}
}
}
function attachFerris ( element , type ) {
var a = document . createElement ( 'a' )
a . setAttribute ( 'href' , 'ch00-00-introduction.html#ferris' )
a . setAttribute ( 'target' , '_blank' )
var img = document . createElement ( 'img' )
img . setAttribute ( 'src' , 'img/ferris/' + type . attr + '.svg' )
img . setAttribute ( 'title' , type . title )
img . className = 'ferris'
a . appendChild ( img )
element . parentElement . insertBefore ( a , element )
}
