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How to get multiple values ​​selected in checkbox in js

一个新手
Release: 2017-09-30 09:40:30
Original
3093 people have browsed it

Idea: Use the name attribute value to obtain the checkbox object, and then loop to determine the checked attribute (true means selected, false means unchecked). Here is an example demonstration:

1, HTML structure


<input type="checkbox" name="test" value="1" />
<span>
    1
</span>
<input type="checkbox" name="test" value="2" />
<span>
    2
</span>
<input type="checkbox" name="test" value="3" />
<span>
    3
</span>
<input type="checkbox" name="test" value="4" />
<span>
    4
</span>
<input type="checkbox" name="test" value="5" />
<span>
    5
</span>
<input type=&#39;button&#39; value=&#39;提交&#39; onclick="show()" />
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2, javascript code (jQuery)


function show(){
    obj = document.getElementsByName("test");
    check_val = [];
    for(k in obj){
        if(obj[k].checked)
            check_val.push(obj[k].value);
    }
    alert(check_val);
}
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3. Demonstration effect

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