使用js控制readonly、disabled属性

转载

mb5fd86853067b7 2021-09-30 13:21:00

文章标签 html 用户名 i++ jquery javascript 文章分类 Html/CSS 前端开发

参考

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script>
function switchUser() {
let usernameEl = document.getElementById("username");
const beforeVal = usernameEl.getAttribute("readonly");
console.log("切换前状态：" + getStatus(beforeVal));
if (beforeVal === null) {
usernameEl.setAttribute("readonly", "readonly");
            } else {
usernameEl.removeAttribute("readonly");
            }
const afterVal = usernameEl.getAttribute("readonly");
console.log("切换后状态：" + getStatus(afterVal));
        }

function getStatus(readonlyVal) {
if (readonlyVal === null) {
return "读写"
            } else {
return "只读"
            }
        }
</script>
</head>
<body>

用户名：<input type="text" id="username" name="username"><br>
<button onclick="switchUser()">切换用户名readonly属性</button>

</body>
</html>

disabled (同readonly)

var rowNum = RBResultGrid.mulLineCount; // MulLine.js
if (BusinessType=="02" || BusinessType=="03") {
    for (var i = 0; i < rowNum; i++) {
        document.getElementsByName("RBResultGrid15")[i].setAttribute("disabled",true);
        document.getElementsByName("RBResultGrid16")[i].setAttribute("disabled",true);
    }
}else {
    for (var i = 0; i < rowNum; i++) {
        document.getElementsByName("RBResultGrid15")[i].removeAttribute("disabled");
        document.getElementsByName("RBResultGrid16")[i].removeAttribute("disabled");
    }
}