Javascript 如何根据浏览器在`window.URL.createObjectURL()`和`window.webkitURL.createObjectURL()`之间进行选择
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How to choose between `window.URL.createObjectURL()` and `window.webkitURL.createObjectURL()` based on browser
提问by Rohith Raveendran
From the Firefox developer website, I know that Firefox uses
从 Firefox 开发者网站，我知道 Firefox 使用
objectURL = window.URL.createObjectURL(file);
to get url of file type, but in chrome and other webkit browsers we have window.webkitURL.createObjectURL()for detecting url.
获取文件类型的 url，但在 chrome 和其他 webkit 浏览器中，我们可以window.webkitURL.createObjectURL()检测 url。
I don't know how to swap this functions based on browser engines, and I need it to be worked on both browsers (Chrome and firefox)
我不知道如何根据浏览器引擎交换这个功能，我需要它在两个浏览器（Chrome 和 firefox）上都能工作
https://developer.mozilla.org/en/DOM/window.URL.createObjectURL
https://developer.mozilla.org/en/DOM/window.URL.createObjectURL
回答by Trevor
Simple one liner:
简单的一个班轮：
var createObjectURL = (window.URL || window.webkitURL || {}).createObjectURL || function(){};
回答by ?ime Vidas
You could define a wrapper function:
您可以定义一个包装函数：
function createObjectURL ( file ) {
if ( window.webkitURL ) {
return window.webkitURL.createObjectURL( file );
} else if ( window.URL && window.URL.createObjectURL ) {
return window.URL.createObjectURL( file );
} else {
return null;
}
}
And then:
进而：
// works cross-browser
var url = createObjectURL( file );
回答by 65Fbef05
if (window.URL !== undefined) {
window.URL.createObjectURL();
} else if (window.webkitURL !== undefined) {
window.webkitURL.createObjectURL();
} else {
console.log('Method Unavailable: createObjectURL');
}
Is round-about what you're looking for. Also, THISexample uses the much simpler...
是你正在寻找的东西。此外，这个例子使用了更简单的......
window.URL = window.URL || window.webkitURL;
