「JavaScript」slice()で文字列の一部を取得するサンプル
書式
文字列.slice(位置,マイナス数値)
使用例
<script> const cftA = "this is a test"; console.log(cftA.slice(0,-1)); console.log(cftA.slice(0,-2)); console.log(cftA.slice(1,-1)); console.log(cftA.slice(1,-2)); </script>
実行結果
this is a tes
this is a te
his is a tes
his is a te