如何使用 JavaScript 对 PHP GET 变量运行 if 语句？

发布于 2024-12-29 17:49:26 字数 835 浏览 0 评论 0原文

我在 snippr 上找到了一个不错的小脚本（http://snipplr.com/view.php? codeview&id=799) 为我提供了关联数组中的 GET 变量。

// Read a page's GET URL variables and return them as an associative array.
function getUrlVars()
{
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');

    for(var i = 0; i < hashes.length; i++)
    {
        hash = hashes[i].split('=');
        vars.push(hash[0]);
        vars[hash[0]] = hash[1];
    }

    return vars;
}

var get = getUrlVars();

我试图检查是否设置了某个 GET 变量以及该值是否为“搜索”。由于某种原因，即使不满足条件，我的代码也无法捕获 If 语句并发出警报。

if((get['search_housing']) = 'search') {
  alert('this works');
}

我不知道为什么它不尊重我的 If 声明。我的代码有问题吗？

原文

I found a nice little script on snippr(http://snipplr.com/view.php?codeview&id=799) that gives me the GET variables in an associative array.

// Read a page's GET URL variables and return them as an associative array.
function getUrlVars()
{
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');

    for(var i = 0; i < hashes.length; i++)
    {
        hash = hashes[i].split('=');
        vars.push(hash[0]);
        vars[hash[0]] = hash[1];
    }

    return vars;
}

var get = getUrlVars();

I am trying to check to see if a certain GET variable is set and if the value is 'search'. For some reason my code is not catching the If statement and alerting even if the condition is not met.

if((get['search_housing']) = 'search') {
  alert('this works');
}

I'm not sure why it's not respecting my If statement. Is there something wrong with my code?

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踏月而来 2025-01-05 17:49:27

= 运算符设置值。

您正在寻找 ==，它比较值：

if((get['search_housing']) == 'search') {
  alert('this works');
}

The = operator sets the value.

You're looking for ==, which compares values:

if((get['search_housing']) == 'search') {
  alert('this works');
}

回复收藏 0 原文

天涯离梦残月幽梦 2025-01-05 17:49:27

if((get['search_housing']) == 'search') {

DOUBLE 等于！

回复收藏 0 原文

若相惜即相离 2025-01-05 17:49:27

也许需要是这样的：

if((get['search_housing']) == 'search') {
    alert('this works');
}

看，= 意味着您正在尝试将“search”分配给 get[]。

Maybe it needs to be this:

if((get['search_housing']) == 'search') {
    alert('this works');
}

See, the = would mean you are trying to assign 'search' to the get[].

回复收藏 0 原文

高冷爸爸 2025-01-05 17:49:27

if(get('search_housing')==='search'){
  alert('test');
}

if(get('search_housing')==='search'){
  alert('test');
}

回复收藏 0 原文

妥活 2025-01-05 17:49:27

尝试使用 gup 代替。您发现的代码看起来不太健壮。您可能想要对返回值进行转义，因为您正在比较结果。

if (gup('search_housing') == 'search') { ... }

function gup( name )
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}

Try gup instead. That code you found doesn't look very robust. You probably want to unescape the returned value because you are comparing the results.

if (gup('search_housing') == 'search') { ... }

function gup( name )
{
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}

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