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huang-x-h/globalEval.js

Last active August 29, 2015 14:07
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globalEval
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globalEval.js
// 摘自http://webreflection.blogspot.com/2007/08/global-scope-evaluation-and-dom.html
function globalEval(data) {
data = data.replace(/^\s*|\s*$/g, "");
if (data) {
var head = document.getElementsByTagName("head")[0] ||
document.documentElement,
script = document.createElement("script");
script.type = "text/javascript";
script.text = data;
head.appendChild(script);
head.removeChild(script);
}
}
window.onload = function() {
(function() {
globalEval("var test = 5;");
})();
assert(test === 5, "The code was evaluated globally.");
};
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