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README.md
@@ -590,6 +590,26 @@ HTML5?
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原型链:
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通过自己的原型并向上寻找直到Object.prototype.__proto__; 这条链就是原型链。
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+- 看看下面运行结果?
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+
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+```javascript
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+window.onload=function(){
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+ var a=1+"1";
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+ var b="1"+1;
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+ var c="abc"+12+5+"def";
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+ var d="abc"+(12+5)+"def";
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+ console.log(a);
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+ console.log(b);
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+ console.log(c);
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+ console.log(d);
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+}
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+//结果
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+11
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+abc125def
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+abc17def
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+```
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- eval是做什么的?
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