Question

例如：

<script>
$(document).ready( function() {
    alert( $(this).getBelowElementToThisScript('form').id );
});
</script>
<form id="IamTheNext"></form>
<form id="Iamnot"></form>

此代码应显示以下消息：IamTheNext

此外，解决方案也需要使用此示例：

<script src="getbelowelement.js"></script>
<form id="IamTheNext"></form>
<form id="Iamnot"></form>

由于

Answer 1

试试这个：

var form = $('script[src="getbelowelement.js"]').next();

但我建议使用表单id：

var form = $('#IamTheNext');

Answer 2

你也可以尝试给脚本标签一个id。

Answer 3

这种做法很危险;脚本不应该在很大程度上取决于它在页面中的位置。

也就是说，以下适用于Firefox和Chrome以及适用于主流浏览器（使用风险自负）。

See it in action at jsBin. <script> ...和<script src="...">两种方法都显示在同一页面中。

$(document).ready( function () {
    invocationsOfThis   = (typeof invocationsOfThis == 'number') ? invocationsOfThis + 1 : 1;
    var scriptTags      = document.getElementsByTagName ('script');
    var thisScriptTag   = null;

    //--- Search scripts for scripts of this type.
    for (var foundCnt = 0, J = 0, L = scriptTags.length;  J < L;  ++J)
    {
        /*--- Since the script can be either inline or included, search
            both the script text and the script src link for our unique
            identifier.
        */
        var thisTag     = scriptTags[J];
        var scriptCode  = thisTag.innerText || thisTag.textContent;
        var scriptSrc   = thisTag.src;

        //--- IMPORTANT, change pastebin.com to the filename that you use.
        if (/invocationsOfThis/i.test (scriptCode)  ||  /pastebin.com/i.test (scriptSrc))
        {
            //--- Found a copy of this script; is it the right one, based on invocation cnt?
            foundCnt++;
            if (foundCnt == invocationsOfThis) {
                thisScriptTag = thisTag;
                break;
            }
        }
    }

    if (thisScriptTag) {
        //--- Get the target node.
        var nextForm        = $(thisScriptTag).next ('form');
        var nextFormId      = nextForm.attr ('id');

        //--- Act on the target node.  Here we notify the user
        nextForm.text ('This is form: "' + nextFormId + '".');
    }
} );

在jQuery中获取就绪函数代码下面的元素？

3 个答案: