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34 lines
1.4 KiB
Markdown
34 lines
1.4 KiB
Markdown
# Function parser
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Create a parser. The function creates a new math.expression.Parser object.
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parser()
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Example usage: var parser = new math.parser();
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// evaluate expressions var a = parser.eval('sqrt(3^2 + 4^2)'); // 5 var b = parser.eval('sqrt(-4)'); // 2i var c = parser.eval('2 inch in cm'); // 5.08 cm var d = parser.eval('cos(45 deg)'); // 0.7071067811865476
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// define variables and functions parser.eval('x = 7 / 2'); // 3.5 parser.eval('x + 3'); // 6.5 parser.eval('function f(x, y) = x^y'); // f(x, y) parser.eval('f(2, 3)'); // 8
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// get and set variables and functions var x = parser.get('x'); // 7 var f = parser.get('f'); // function var g = f(3, 2); // 9 parser.set('h', 500); var i = parser.eval('h / 2'); // 250 parser.set('hello', function (name) { return 'hello, ' + name + '!'; }); parser.eval('hello("user")'); // "hello, user!"
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// clear defined functions and variables parser.clear();
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### Parameters
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Parameter | Type | Description
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--------- | ---- | -----------
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### Returns
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Type | Description
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---- | -----------
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Parser | Parser
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<!-- Note: This file is automatically generated from source code comments. Changes made in this file will be overridden. -->
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