请输入查询关键字:HTML 请输入关键字的搜索框,功能:输入时:框内的请输入关键字消失,鼠标移开时 框内的请输入关键字又重现 2024-04-29 16:41:22 0 0 <!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title></head><body> <div style="width:600px;margin:0 auto;"> <input id="i1" οnfοcus="Focus();" οnblur="Blur();" type="text" value="请输入关键字"> <input type="text" placeholder="请输入关键字"> </div> <script>functionFocus(){vartag=document.getElementById('i1');varval=tag.value;if(val=='请输入关键字'){ tag.value=''; } }functionBlur(){vartag=document.getElementById('i1');varval=tag.value;if(val.length==0){ tag.value='请输入关键字'; } } </script></body></html> 收藏(0)