Help us understand the problem. What is going on with this article?

URLからパラメータを取得して活用する方法

目的

URLに設定されてたパラメータを利用できるように配列として取得する。
JQueryは不要。

コード

parameter.js
    let param;
    let param_split;
    if(window.location.search){
        param = window.location.search.substring(1,window.location.search.length)
        param_split = param.split("&");
    }

解説

parameter.js
    //変数宣言
    let param
    let param_split;

    //URLにパラメータが存在する場合
    if(window.location.search){
        //URL内のパラメータを取得(substring(1,~~~)の1はパラメータの最初の文字から1文字目
        param = window.location.search.substring(1,window.location.length);
        //取得したパラメータを&区切りで配列に代入
        param_split = param.split("&");
    }
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