Mobile Platform as a Service:Basic library

Global

Attribute

• Infinity
• NaN
• undefined

Method

• decodeURI
• decodeURIComponent
• encodeURI
• encodeURIComponent
• isNaN
• isFinite
• parseFloat
• parseInt

console

The console.log method is used to output relevant information in the console. This method can accept multiple parameters and connect the parameter results in the output.

Date

Method

• now
• parse
• UTC

Number

Attribute

• MAX_VALUE
• MIN_VALUE
• NEGATIVE_INFINITY
• POSITIVE_INFINITY

JSON

Method

• stringify(object): converts an object into a JSON string and returns the string.
• parse(string): converts a JSON string into an object and returns the object.

Example

console.log(undefined === JSON.stringify());
console.log(undefined === JSON.stringify(undefined));
console.log("null"===JSON.stringify(null));
console.log("222"===JSON.stringify(222));
console.log('"222"'===JSON.stringify("222"));
console.log("true"===JSON.stringify(true));
console.log(undefined===JSON.stringify(function(){}));
console.log(undefined===JSON.parse(JSON.stringify()));
console.log(undefined===JSON.parse(JSON.stringify(undefined)));
console.log(null===JSON.parse(JSON.stringify(null)));
console.log(222===JSON.parse(JSON.stringify(222)));
console.log("222"===JSON.parse(JSON.stringify("222")));
console.log(true===JSON.parse(JSON.stringify(true)));
console.log(undefined===JSON.parse(JSON.stringify(function(){})));

Math

Attribute

• E
• LN10
• LN2
• LOG2E
• LOG10E
• PI
• SQRT1_2
• SQRT2

Method

• abs
• acos
• asin
• atan
• atan2
• ceil
• cos
• exp
• floor
• log
• max
• min
• pow
• random
• round
• sin
• sqrt
• tan