js 图片路径转换base64格式

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id = 'app'>

    </div>
    <script>
        let url = "https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.jj20.com%2Fup%2Fallimg%2F4k%2Fs%2F02%2F2109242312005c1-0-lp.jpg&refer=http%3A%2F%2Fimg.jj20.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1659174217&t=2fd6120db3cd74070561b7e1e112d0e7";
        function getBase64(imgUrl) {
      
      
            window.URL = window.URL || window.webkitURL;
            var xhr = new XMLHttpRequest();
            xhr.open("get", imgUrl, true);
            // 至关重要
            xhr.responseType = "blob";
            xhr.onload = function () {
      
      
                if (this.status == 200) {
      
      
                //得到一个blob对象
                var blob = this.response;
                // 至关重要
                let oFileReader = new FileReader();
                oFileReader.onloadend = function (e) {
      
      
                    let base64 = e.target.result;
                    console.log(base64)
                };
                oFileReader.readAsDataURL(blob);
                //====为了在页面显示图片，可以删除====
        
                }
            }
            xhr.send();
        }
        getBase64(url);
    </script>
</body>
</html>

运行结果如下
在这里插入图片描述
这样我们就成功转换路径为base64格式了 base64的路径直接放给图片路径就可以直接用了
颜色代码如下

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id = 'app'>

    </div>
    <script>
        let url = "https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.jj20.com%2Fup%2Fallimg%2F4k%2Fs%2F02%2F2109242312005c1-0-lp.jpg&refer=http%3A%2F%2Fimg.jj20.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1659174217&t=2fd6120db3cd74070561b7e1e112d0e7";
        function getBase64(imgUrl) {
      
      
            window.URL = window.URL || window.webkitURL;
            var xhr = new XMLHttpRequest();
            xhr.open("get", imgUrl, true);
            // 至关重要
            xhr.responseType = "blob";
            xhr.onload = function () {
      
      
                if (this.status == 200) {
      
      
                //得到一个blob对象
                var blob = this.response;
                // 至关重要
                let oFileReader = new FileReader();
                oFileReader.onloadend = function (e) {
      
      
                    let base64 = e.target.result;
                    console.log(base64)
                    document.getElementById('app').innerHTML = `<img src = ${ 
        base64} />`;
                };
                oFileReader.readAsDataURL(blob);
                //====为了在页面显示图片，可以删除====
        
                }
            }
            xhr.send();
        }
        getBase64(url);
    </script>
</body>
</html>

在这里插入图片描述
也是非常的简单主要base64便于后端处理运行速度上也有优势

js 图片路径转换base64格式

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