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JavaScript Expressions: Introduction to URL Protocol_Basic Knowledge

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WBOYOriginal
2016-05-16 17:40:36968browse

javascript: can be followed by any legal javascript expression or a collection of expressions separated by semicolons, and the results will be returned to the browser window in the form of a string.

For example, enter javascript: 5 4 in the address bar of the browser. After pressing Enter, the browser window will display 9

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