简体   繁体   English

使用jQuery获取动态复选框值

[英]Get dynamic checkbox values with jQuery

I can't get the checked values of the dynamic check box. 我无法获取动态复选框的选中值。 What am I doing wrong? 我究竟做错了什么? http://jsfiddle.net/hxfsB/17/ http://jsfiddle.net/hxfsB/17/

Markup: 标记:

<html>
    <body>
      one<input type="checkbox" name='checkbox0' value="one_name" checked>
     two<input type="checkbox" name='checkbox1' value="one_name1">
     three<input type="checkbox" name='checkbox2' value="one_name2">
         <input type="button" id="envoyer" value="Envoyer Reponse"  /> 
    </body>
</html>

Javascript: 使用Javascript:

$('#envoyer').click(function(e){
    var myArray=new Array(4);
    for ( var j = 0; j < 3; j++){ 
        var check=$('input:checkbox[name=checkbox'+j+']').is(':checked');
        if(check==true)
            myArray[j]=$('input:checkbox[name=checkbox'+j+']').val();
    }
    alert('check '+" "+myArray[i]);
});

You have an error when outputting myArray in alert (there is no i variable defined). 在alert中输出myArray时出错(没有定义i变量)。

However, your code can be better structured. 但是,您的代码可以更好地构建。 Here is one solution: 这是一个解决方案:

$("#envoyer").click(function(e) {
    var myArray = [];
    $(":checkbox:checked").each(function() {
        myArray.push(this.value);
    });

    alert("Checked: " + myArray.join(","));
});​

DEMO: http://jsfiddle.net/hxfsB/25/ 演示: http //jsfiddle.net/hxfsB/25/

You had an Uncaught ReferenceError: i is not defined ; 你有一个Uncaught ReferenceError: i is not defined ; I've updated your fiddle here: 我在这里更新了你的小提琴:

http://jsfiddle.net/hxfsB/24/ http://jsfiddle.net/hxfsB/24/

$('#envoyer').click(function(e){
    var myArray = new Array(3);
    for ( var j = 0; j < 3; j++) { 
        var check=$('input:checkbox[name=checkbox'+j+']').is(':checked');
        if(check==true)
            myArray[j]=$('input:checkbox[name=checkbox'+j+']').val();

        // Alert Current Selection //
        alert('check ' + " " + myArray[j] );
    }    
});

Keep in mind: undefined means the checkbox is NOT selected. 请记住: undefined表示未选中该复选框。

I hope this helps! 我希望这有帮助!

At your title suggests, if you want to get checked check-boxes values, you can do this, 在您的标题建议,如果您想要检查复选框值,您可以这样做,

Javascript: 使用Javascript:

$('#envoyer').click(function(e){
    $('input[type="checkbox"]:checked').each(function(){
        alert(this.value);
    })        
})​

Markup 标记

<html>
    <body>
      one<input type="checkbox" name='checkbox0' value="one_name" checked>
      two<input type="checkbox" name='checkbox1' value="one_name1">
      three<input type="checkbox" name='checkbox2' value="one_name2">
        <input type="button" id="envoyer" value="Envoyer Reponse"  /> 
    </body>
</html>

try this out : http://jsfiddle.net/hxfsB/27/ 试试这个: http//jsfiddle.net/hxfsB/27/

there is an issue with the selector 选择器存在问题

$('#envoyer').click(function(e){
    var myArray=new Array(3);

    $('input[type=checkbox]:checked').each(function(i) {
       myArray[i] = $(this).val();
       //alert($(this).val());
    });
}​);​

The i in myArray[i] doesn't exist anywhere. myArray[i]中的i在任何地方都不存在。 You need to either put the alert inside the for loop and use myArray[j] or create a new for loop using i 您需要将警报放在for循环中并使用myArray[j]或使用i创建一个新的for循环

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM