回答編集履歴
1
sample
test
CHANGED
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@@ -1 +1,59 @@
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clickではだめでしょうか？
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# sample
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とりあえず古いブラウザは無視します。
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（ほぼjQueryは使ってませんね・・・）
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```javascript
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$(function(){
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$('input[value=enter]').on('click',function(){
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var t=$('#hoge').get(0);
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var v=$('#hoge').val();
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t.focus();
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if(window.getSelection){
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window.getSelection();
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var p = t.selectionStart;
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var x=v.substr(0,p);
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var y=v.substr(p,v.length);
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t.value=x+"\n"+y;
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t.setSelectionRange(p+1,p+1);
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}
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});
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});
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```
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```HTML
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<textarea id="hoge" rows=10>
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aaaaaaaaaaa
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bbbbbbbbbbb
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ccccccccccc</textarea>
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<input type="button" value="enter">
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```
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59
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