- 代码：
<input type="text">
<button>复制</button>
<script>
var input = document.getElementsByTagName('input')[0]
var button = document.getElementsByTagName('button')[0]
button.onclick = function(){
input.value = "hello world"
input.select()
document.execCommand("copy")
}
</script>
- 效果：
- execCommand常用方法：
cut
delete
copy
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