dtujfmfs06058
2018-01-18 13:54
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使用JS或PHP从span元素中获取值

I have a few values in a few spans and I want to extract each number to a string and then perform calculations. I have the following code which will just get the value from the "example" id but how can I get the values from all the spans as well

$(function() {
    $a = $('#example').text();
    window.alert($a);    
});

<div id="example">
<span>1</span>
<span>,</span>
<span>9</span>
<span>9</span>
<span>3</span>
<span>,</span>
<span>1</span>
</div>
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1条回答 默认 最新

  • dongtao9158 2018-01-18 14:30
    已采纳

    Since you're using jQuery you can loop through them easily:

    $('#example span').each(function(){
       console.log($(this).text());
    })
    

    Please, quit using alert() for troubleshooting., use console.log() instead.

    EDIT: Here is a start for getting them into a string:

    var numbers = [];
    $('#example span').each(function(){
        if(',' != $(this).text()) {
        console.log($(this).text());
        numbers.push($(this).text());
      }
    })
    console.log(numbers)
    var numberString = numbers.toString();
    console.log(numberString);
    

    returns

    1,9,9,3,1

    If you don't want commas in the string then use join() (whatever you put in the join argument becomes the string separator):

    var numberString = numbers.join('');
    

    returns

    19931

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