本文介绍了如何通过点击链接为URL中的值设置下拉列表的值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我尝试通过点击链接(链接到同一页面)来设置下拉列表的值,并且我想为该选择设置的值位于链接中。

我试图这样做,但因为它搞砸了,它不起作用。

这里是我使用的代码:

I'm trying to set a value for a dropdown list by clicking on a link(links to the same page), and the value that i want to set for the select is in the link.
I tried to do it this way, but because it is messed up it didn't work.
Here's the code i used:

<html>
<body>
<select id="select">
<option value="one">Pen</option>
<option value="two">Paper</option>
<option value="three">Book</option>
</select>

<a class="link1" href="page.php?cc=three">Set select value</a>

<script> 
    function $_GET(param) {
        var vars = {};
            window.location.href.replace( location.hash, '' ).replace( 
                /[?&]+([^=&]+)=?([^&]*)?/gi, // regexp
                function( m, key, value ) { // callback
                vars[key] = value !== undefined ? value : '';
                }
            );

        if ( param ) {
            return vars[param] ? vars[param] : null;    
        }
            return vars;
    }

    var cc = $_GET('cc');

    var elmnt = document.getElementsByClassName('link1'),
        selectClasse = document.getElementById('select');

            function setSelect () {
            for (var i = 0; i < elmnt.length; i++) {
                elmnt[i].onclick = function () {

                selectClasse.value = cc;
                    }
        window.history.pushState('Form', 'My form', this.getAttribute("href"));
        return false;
        };
    }
}
setSelect ();

</script>
</body>
</html>  

任何帮助都将不胜感激。

Any help would be much appreciated.

推荐答案

如果你想用链接和它的url参数来做到这一点;

If you want to do this with a link and its url parameters;

根据答案:

所以你可以这样做;

var params = {};

if (location.search) {
var parts = location.search.substring(1).split('&');

for (var i = 0; i < parts.length; i++) {
    var nv = parts[i].split('=');
    if (!nv[0]) continue;
    params[nv[0]] = nv[1] || true;
}
}

var cc = params.cc;

var element = document.getElementById('select');
element.value = cc;

这篇关于如何通过点击链接为URL中的值设置下拉列表的值的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!

10-27 18:18