如何检查复选框是否已选中?

我正在用jQuery移动构建一个移动web应用程序，我想检查是否选中了复选框。这是我的代码。

<script type=text/javascript>
  function validate(){
    if (remember.checked == 1){
      alert("checked") ;
    } else {
      alert("You didn't check it! Let me check it for you.")
    }
  }
</script>

<input id="remember" name="remember" type="checkbox" onclick="validate()" />

但由于某种原因，它没有执行。

请帮帮我!

——编辑这是我目前拥有的。

<DIV data-role="content" data-theme="g">
    <DIV class=ui-grid-g-login>
        <FORM method=post action=[$=PROBE(266)/] data-theme="C">
            <P>~DATA_ERROR~</P>
            <div id="mail" data-role="fieldcontain">
                <label for="mail">Email:*</label>       
                <input id="mail" name="mail" type="email" />
            </div>
            <div id="pass" data-role="fieldcontain">
                <label for="pass">Paswoord:*</label>        
                <input id="pass" name="pass" type="password" />
            </div>
            <div id="remember" data-role="fieldcontain">
                <label for="remember">Onthoud mij</label>       
                <input id="remember" name="remember" type="checkbox" onclick="validate()" />
            </div>
            <P><INPUT class=btn name=submit value=Login type=submit  onclick="validate()"></P>  
        </FORM>
    </DIV>
</DIV><!-- /content -->

<script type=text/javascript>
function validate(){
    var remember = document.getElementById('remember');
    if (remember.checked){
        alert("checked") ;
    }else{
        alert("You didn't check it! Let me check it for you.")
    }
}
</script>

——编辑

解决了，问题是字段包含也被命名为"记住"

当前回答

这应该可以

function validate() {
    if ($('#remeber').is(':checked')) {
        alert("checked");
    } else {
        alert("You didn't check it! Let me check it for you.");
    }
}

2020-04-20 11:15:10

其他回答

试试这个:

function validate() {
  var remember = document.getElementById("remember");
  if (remember.checked) {
    alert("checked");
  } else {
    alert("You didn't check it! Let me check it for you.");
  }
}

你的脚本不知道记住的变量是什么。您需要首先使用getElementById()获取元素。

2012-03-27 10:05:48

remember变量没有定义。所以试试这个方法:

function validate() {
  var remember = document.getElementById("remember");
  if (remember.checked) {
    alert("checked");
  } else {
    alert("You didn't check it! Let me check it for you.");
  }
}

2021-04-16 09:22:34

if (document.getElementById('remember').checked) {
    alert("checked");
}
else {
    alert("You didn't check it! Let me check it for you.");
}

2013-05-15 10:14:10

这应该可以

function validate() {
    if ($('#remeber').is(':checked')) {
        alert("checked");
    } else {
        alert("You didn't check it! Let me check it for you.");
    }
}

2020-04-20 11:15:10

//HTML
<input type="checkbox" id="someID">

// JavaScript
const someCheckbox = document.getElementById('someID');

someCheckbox.addEventListener('change', e => {
  if(e.target.checked === true) {
    console.log("Checkbox is checked - boolean value: ", e.target.checked)
  }
if(e.target.checked === false) {
    console.log("Checkbox is not checked - boolean value: ", e.target.checked)
  }
});

知道更多

2021-04-16 09:01:51

如何检查复选框是否已选中?

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