现在实现的有基础用法、可清空、密码框，参考链接：https://element.eleme.cn/#/zh-CN/component/input
HTML代码：想要测试哪个组件，直接将对应组件解开注释即可，标红的js和css记得修改成你自己的位置。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>js实现可清空input组件</title>
<script src="../js/input/jsInput.js"></script>
<link rel="stylesheet" type="text/css" href="../css/jsInput.css"/>
</head>
<body>
<script>
//普通input输入框
document.write(createElementInput())
//添加可清空功能clearable
//document.write(createElementInput("clearable"))
//实现密码框show-password
//document.write(createElementInput("show-password"))
</script>
</body>
</html>
JS代码：
function createElementInput(str){ var temp = str; var html = "<div id='my_input_div' onmouseover='addClearNode(""+str+"")'' onmouseout='hiddenClearNode(""+str+"")''>"; html += "<input id='my_input' placeholder='请输入内容'"; if(str){ if(str == 'show-password'){ html+=" type = 'password' "; } } html += "oninput='addClearNode(""+str+"")'"; html += "onclick='changeColor(""+str+"")'"; html += "onblur='hiddenClearNode(""+str+"")'/>"; if(str){ html += "<input id='"+str+"' onmousedown='changeValue(""+str+"")'/>"; } html += "</div>" return html; } //box-shadow: 0 0 0 20px pink; 通过添加阴影的方式显示边框 function changeColor(str){ //alert(str) document.getElementById("my_input_div").style.boxShadow="0 0 0 2px #409eff"; //获取inpu的值 var value = document.getElementById('my_input').value; var button = document.getElementById(str); //添加判断 如果输入框中有值 则显示清空按钮 if(value){ if(button){ button.style.visibility = "visible" } } } //应该输入内容之后使用该事件 function addClearNode(str){ var value = document.getElementById('my_input').value; var button = document.getElementById(str); //alert(value) if(value){ if(button){ //将button设置为可见 button.style.visibility = 'visible' } }else{ //判断该属性是否存在 if(button){ //将button设置为不可见 button.style.visibility = 'hidden' } } //选中后div添加选中样式 高亮显示 document.getElementById("my_input_div").style.outline="0 0 0 2px #409eff"; } //改变input中的值 function changeValue(str){ if(str){ if(str == 'clearable'){ clearValues(str); }else if(str == 'show-password'){ showPassword(); } } } //清空输入值 function clearValues(str){ document.getElementById("my_input").value = ""; document.getElementById(str).style.visibility = "hidden"; //仍然处于选中状态 div边框突出阴影 document.getElementById("my_input_div").style.boxShadow="0 0 0 2px #409eff" } //隐藏清除按钮 function hiddenClearNode(str){ var button = document.getElementById(str); if(button){ button.style.visibility="hidden"; } //将div阴影设置为0 document.getElementById("my_input_div").style.boxShadow="0 0 0" } //显示密码 function showPassword(){ var myInput = document.getElementById('my_input'); var password = myInput.value; var type = myInput.type; //alert(type) if(type){ if(type == 'password'){ myInput.type = ''; myInput.value = password; }else{ myInput.type = 'password'; myInput.value = password; } } //仍然处于选中状态 div边框突出阴影 document.getElementById("my_input_div").style.boxShadow="0 0 0 2px #409eff" }
CSS代码：
#my_input_div{ 150px; border: 1px solid silver; border-radius: 4px; position: relative; } #my_input{ height: 30px; 100px; margin-left: 6px; border: none; outline: none; cursor: pointer; } #clearable{ height: 20px; 15px; text-align: center; visibility:hidden; border: none; outline: none; color: #409eff; cursor: pointer; background-image: url(../image/clear.svg); background-repeat: no-repeat; background-size: 12px; position: absolute; top: 10px; left: 120px; display: inline-block; } #show-password{ height: 20px; 15px; text-align: center; visibility:hidden; border: none; outline: none; color: #409eff; cursor: pointer; background-image: url(../image/eye.svg); background-repeat: no-repeat; background-size: 12px; position: absolute; top: 10px; left: 120px; display: inline-block; }
剩下的功能会慢慢被完善......