回答編集履歴
1
ソースを修正しました
test
CHANGED
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@@ -46,7 +46,9 @@
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46
46
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47
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<div id="fixed">
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48
48
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49
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<p><img src="https://3.bp.blogspot.com/-Ncn2Gj8Aq9k/WwJZjGt-FBI/AAAAAAABMF0/5Uco6MFSragyb_xcDgrfuUFZMfx9diW2gCLcBGAs/s180-c/bird_okameinkogray.png"
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50
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+
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49
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-
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51
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alt="変更対象の画像"></p>
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50
52
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51
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</div>
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52
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@@ -76,25 +78,27 @@
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76
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77
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78
80
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79
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<script src="https://code.jquery.com/jquery-3.3.1.js"
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81
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<script src="https://code.jquery.com/jquery-3.3.1.js"></script>
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80
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<script>
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$(function () {
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84
86
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85
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function getRange
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87
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function getRange(elem) {
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86
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87
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var
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89
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var range = {}
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88
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89
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-
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91
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range.a = elem.offset().top;
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90
92
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93
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range.b = range.a + elem.height();
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94
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91
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return
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95
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return range;
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92
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}
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95
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function inRange
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99
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function inRange(value, range) {
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96
100
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97
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return range
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101
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return range.a <= value && value <= range.b;
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98
102
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}
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@@ -112,19 +116,27 @@
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112
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113
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var profile = getRange($('#main_top2'));
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114
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115
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-
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119
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// 元の画像にする
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116
120
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117
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-
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121
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if (crntTop <= works.a) {
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118
122
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119
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$('#fixed img').attr('
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123
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$('#fixed img').attr('src', 'https://3.bp.blogspot.com/-Ncn2Gj8Aq9k/WwJZjGt-FBI/AAAAAAABMF0/5Uco6MFSragyb_xcDgrfuUFZMfx9diW2gCLcBGAs/s180-c/bird_okameinkogray.png');
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120
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121
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}
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122
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123
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-
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127
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// 記事"Work"の画像にする
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124
128
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125
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-
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129
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else if (inRange(crntTop, works)) {
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126
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127
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$('#fixed img').attr('
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131
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$('#fixed img').attr('src', 'https://3.bp.blogspot.com/-dqoq-nN83NM/W1vg19r9wlI/AAAAAAABNrw/IP2DyyofvHgh8Z1weiHaVYZlPkplfZ3hACLcBGAs/s180-c/animal_chara_computer_inu.png');
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132
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133
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}
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134
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135
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// 記事"Profile"の画像にする
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136
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137
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else if (inRange(crntTop, profile)) {
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138
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139
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$('#fixed img').attr('src', 'https://3.bp.blogspot.com/-I5omlyOiw04/W1vg2o3hHgI/AAAAAAABNr4/_PpEM8ZROX42aTaNNZQK2_p2JT7Bfp8zgCLcBGAs/s180-c/animal_chara_computer_neko.png');
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128
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}
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130
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