javascript动态创建script标签,加载完成后调用回调

javascript动态创建script标签,加载完成后调用回调

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														 流浪猫の窝															
														 2024-10-14 06:09:49 

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									<pre>        var head = document.getElementsByTagName(&#39;head&#39;)[0];<br/>
    var script = document.createElement(&#39;script&#39;);<br/>
    script.type = &#39;text/javascript&#39;;<br/>
    script.charset = &#39;GBK&#39;;<br/>
    script.onload = script.onreadystatechange = function() {<br/>
        if (!this.readyState || this.readyState === &#34;loaded&#34; || this.readyState === &#34;complete&#34; ) {<br/>
            callback();<br/>
            script.onload = script.onreadystatechange = null;<br/>
        }<br/>
    };<br/>
    script.src= url;<br/>
    head.appendChild(script);</pre>


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