回答編集履歴
4
調整
test
CHANGED
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@@ -133,3 +133,52 @@
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133
133
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<div id="target">target</div>
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134
134
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<div class="dummy"></div>
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135
135
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```
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136
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+
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137
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+
# localStorageでページごとにチェックをする
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138
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+
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139
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+
// prev.html
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140
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+
```javascript
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141
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+
<script>
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142
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+
const checked=new Set(JSON.parse(localStorage.getItem('checked')??"[]"));
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143
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+
window.addEventListener('DOMContentLoaded', ()=>{
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144
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+
console.log(checked);
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145
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+
btn_s.addEventListener('click',()=>{
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146
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+
checked.add(location.href);
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147
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+
localStorage.setItem('checked',JSON.stringify([...checked]));
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148
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+
console.log(checked);
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149
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+
});
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150
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+
btn_r.addEventListener('click',()=>{
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151
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+
checked.delete(location.href);
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152
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+
localStorage.setItem('checked',JSON.stringify([...checked]));
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153
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+
console.log(checked);
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154
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+
});
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155
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+
});
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156
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+
</script>
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157
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+
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158
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+
<input type="button" id="btn_s" value="set">
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159
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+
<input type="button" id="btn_r" value="remove">
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160
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+
<a href="next.html">next.html</a>
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161
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+
```
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162
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+
// next.html
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163
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+
```javascript
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164
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+
<script>
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165
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+
const checked=new Set(JSON.parse(localStorage.getItem('checked')??"[]"));
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166
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+
window.addEventListener('DOMContentLoaded', ()=>{
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167
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+
console.log(checked);
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168
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+
btn_s.addEventListener('click',()=>{
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169
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+
checked.add(location.href);
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170
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+
localStorage.setItem('checked',JSON.stringify([...checked]));
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171
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+
console.log(checked);
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172
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+
});
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173
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+
btn_r.addEventListener('click',()=>{
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174
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+
checked.delete(location.href);
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175
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+
localStorage.setItem('checked',JSON.stringify([...checked]));
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176
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+
console.log(checked);
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177
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+
});
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178
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+
});
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179
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+
</script>
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180
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+
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181
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+
<input type="button" id="btn_s" value="set">
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182
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+
<input type="button" id="btn_r" value="remove">
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183
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+
<a href="prev.html">prev</a>
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184
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+
```
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3
chousei
test
CHANGED
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@@ -132,11 +132,4 @@
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132
132
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<div class="dummy"></div>
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133
133
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<div id="target">target</div>
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134
134
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<div class="dummy"></div>
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135
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-
<script>
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136
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-
window.addEventListener('scroll',()=> {
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137
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-
});
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138
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-
</script>
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139
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-
<div class="dummy"></div>
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140
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-
<div id="target">target</div>
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141
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-
<div class="dummy"></div>
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142
135
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```
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2
追記
test
CHANGED
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@@ -78,3 +78,65 @@
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78
78
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<div id="target">target</div>
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79
79
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<div class="dummy"></div>
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80
80
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```
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81
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+
# targetの75%以上が表示されたらモーダルをだす
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82
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+
```javascript
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83
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+
<style>
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84
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+
.dummy{
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85
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height:150%;
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86
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+
background-Color:gray;
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87
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+
}
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88
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+
#target{
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89
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background-Color:red;
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90
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+
height:50%;
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91
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+
}
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92
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+
</style>
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93
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+
<script>
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94
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+
window.addEventListener('DOMContentLoaded', async()=>{
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95
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+
const dlg=document.querySelector('dialog');
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96
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+
const img=document.querySelector('dialog img');
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97
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const imgs=[
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98
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"https://placehold.jp/00ff00/00000/100x100.png?text=2",
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99
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"https://placehold.jp/0000ff/00000/100x100.png?text=3",
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100
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"https://placehold.jp/ffff00/00000/100x100.png?text=4",
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101
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"https://placehold.jp/00ffff/00000/100x100.png?text=5",
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102
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];
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103
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+
let count=0;
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104
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+
img.addEventListener('click',()=>{
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105
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if(count>=imgs.length){
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106
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dlg.close();
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107
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document.body.style.overflowY="auto";
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108
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return;
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109
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}
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110
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img.src=imgs[count];
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111
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count++;
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112
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});
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113
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+
const onScroll = ()=>{
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114
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+
const observer = new IntersectionObserver(changes=>{
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115
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for (let change of changes) {
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116
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if(change.intersectionRatio >= 0.75){
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117
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+
document.body.style.overflowY="hidden";
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118
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+
dlg.showModal();
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119
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+
window.removeEventListener('scroll',onScroll);
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120
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+
}
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121
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+
}
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122
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+
});
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123
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+
observer.observe(document.querySelector('#target'));
|
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124
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+
};
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125
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+
window.addEventListener('scroll',onScroll);
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126
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+
});
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127
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+
</script>
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128
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+
<dialog>
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129
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+
<img src="https://placehold.jp/ff0000/00000/100x100.png?text=1"><br>
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130
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+
click image!
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131
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</dialog>
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132
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+
<div class="dummy"></div>
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133
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+
<div id="target">target</div>
|
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134
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+
<div class="dummy"></div>
|
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135
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+
<script>
|
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136
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+
window.addEventListener('scroll',()=> {
|
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137
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+
});
|
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138
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+
</script>
|
|
139
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+
<div class="dummy"></div>
|
|
140
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+
<div id="target">target</div>
|
|
141
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+
<div class="dummy"></div>
|
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142
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+
```
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1
調整
test
CHANGED
|
@@ -24,3 +24,57 @@
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24
24
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click image!
|
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25
25
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</dialog>
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26
26
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```
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27
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+
|
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28
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+
# スクロールしてからモーダルを開く
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|
29
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+
```javascript
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|
30
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+
<style>
|
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31
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+
.dummy{
|
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32
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+
height:150%;
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|
33
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+
background-Color:gray;
|
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34
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+
}
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35
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+
#target{
|
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36
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+
background-Color:red;
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37
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+
}
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38
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+
</style>
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39
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+
<script>
|
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40
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+
window.addEventListener('DOMContentLoaded', async()=>{
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41
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+
const dlg=document.querySelector('dialog');
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42
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+
const img=document.querySelector('dialog img');
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43
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const imgs=[
|
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44
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"https://placehold.jp/00ff00/00000/100x100.png?text=2",
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45
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"https://placehold.jp/0000ff/00000/100x100.png?text=3",
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46
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"https://placehold.jp/ffff00/00000/100x100.png?text=4",
|
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47
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"https://placehold.jp/00ffff/00000/100x100.png?text=5",
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48
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+
];
|
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49
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+
let count=0;
|
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50
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+
img.addEventListener('click',()=>{
|
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51
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+
if(count>=imgs.length){
|
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52
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+
dlg.close();
|
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53
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+
return;
|
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54
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+
}
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55
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+
img.src=imgs[count];
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56
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+
count++;
|
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57
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+
});
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58
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+
let timerId;
|
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59
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+
let onScroll = ()=>{
|
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60
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+
clearTimeout(timerId);
|
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61
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+
timerId = setTimeout(()=>{
|
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62
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+
dlg.showModal();
|
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63
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+
window.removeEventListener('scroll',onScroll);
|
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64
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+
},100);
|
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65
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+
};
|
|
66
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+
window.addEventListener('scroll',onScroll);
|
|
67
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+
window.scrollTo({
|
|
68
|
+
top: document.body.scrollTop+target.getBoundingClientRect().top,
|
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69
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+
behavior: "smooth",
|
|
70
|
+
});
|
|
71
|
+
});
|
|
72
|
+
</script>
|
|
73
|
+
<dialog>
|
|
74
|
+
<img src="https://placehold.jp/ff0000/00000/100x100.png?text=1"><br>
|
|
75
|
+
click image!
|
|
76
|
+
</dialog>
|
|
77
|
+
<div class="dummy"></div>
|
|
78
|
+
<div id="target">target</div>
|
|
79
|
+
<div class="dummy"></div>
|
|
80
|
+
```
|