所属类别：JavaScript

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1.直接document.writedocument.write(<\/script>);2.动态改变已有script的src属性s1.src=test.js3.动态创建script元素var s2 = document.createElement(script);s2.src=test.jsdocument.body.insertAdjacentElement(BeforeBegin,s2);function loadJs(file){var scriptTag = document.getElementById('loadScript');var head = document.getElementsByTagName('head').item(0)if(scriptTag) head.removeChild(scriptTag);script = document.createElement('script');script.src = file;script.type = 'text/javascript';script.id = 'loadScript';head.appendChild(script)}

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