Question

示例网址

的.com / projects.php＆安培;？filterDate = this_week页= 5

我上面列出的查询字符串可能包含也可能没有?page=#查询字符串。我正在寻找一种方法来获取URL（完成），搜索字符串以确定它是否具有.replace查询字符串（也已完成），如果它不存在则添加（也已完成），但是如果它那么用不同的数字替换它（需要帮助）。代码当前不会更改查询字符串（即page = 5不会更改为page = 6或其他任何内容）。似乎current_window_location3方法的正则表达式不正确（请参阅下面的//Get the current URL var current_window_location = window.location.href; if(current_window_location.match("\\?page=([^&]+)")){ //Replace this query string var current_window_location3 = current_window_location.replace("\\?page=([^&]+)", new_page_num); //Go to this newly replaced location window.location = current_window_location3; }else{ //Add clicked '?page=#' query string to the URL var current_window_location2 = current_window_location + "?page="+new_page_num; //Go to this new location window.location = current_window_location2; }变量）。

ListDirectory

Answer 1

String.prototype.replace()作为第一个值，搜索模式，字符串或正则表达式。如果给出了字符串（"abc?"），它将搜索要替换的文字字符串。如果正则表达式（/abc?/）传递正则表达式匹配，则使用正则表达式进行搜索。

更改您的

var current_window_location3 = current_window_location.replace("\\?page=([^&]+)", new_page_num);

到

var current_window_location3 = current_window_location.replace(/\?page=([^&]+)/, new_page_num);

这是一个说明代码段：

var current_window_location = '.com/projects.php?&filterDate=this_week*?page=5*',
    window_location = '',
    new_page_num = 123;

if(current_window_location.match("\\?page=([^&]+)")){
    //Replace this query string 
    var current_window_location = current_window_location.replace(/\?page=([^&]+)/, new_page_num);

    //Go to this newly replaced location
    window_location = current_window_location;

} else {
    //Add clicked '?page=#' query string to the URL
    var current_window_location = current_window_location + "?page="+new_page_num;

    //Go to this new location
    window_location = current_window_location;
}

document.write("window_location = " + window_location);

查找并替换附加数字的字符串

1 个答案: