How to convert javascript string to Boolean

This article mainly introduces how to turn javascript strings into boolean, which has certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let Xiaobian take you to understand it together.

javascript The method of converting a string to a Boolean value: 1. Create an HTML sample file;2. Add a script tag;3. Convert a string to a Boolean value by "Boolean(" string ");".

Operating environment of this article: Windows 7 system, Javascript version 1.8.5, Dell G3 computer.

js converts string to boolean

Boolean(); 0, null and no arguments return false, with arguments return true.

Boolean("");//Output is: falseBoolean(null);//Output is: falseBoolean(0);//Output is: false Boolean("hi");//Output is: trueBoolean(100);//Output is: trueBoolean(new Object()); //Output is: true

Related Introduction:

Creating Boolean objects

Boolean objects represent two values:"true" or "false"

The following code defines a Boolean object named myBoolean:

var myBoolean=new Boolean();

If the Boolean object has no initial value or its value is:

0

-0

null

""

false

undefined

NaN

Then the value of the object is false. Otherwise, its value is true (even when the variable value is the string "false")!

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