For strings, defaultValue is used if someValue === "" . ... It's a javascript error to reference an undefined variable with no scope in your ... ... <看更多>

When you don't pass the discount argument into the applyDiscount() function, the function uses a default value which is 0.05 . Similar to JavaScript, you can ... ... <看更多>

Default values. You can set the default values for properties using the default property in jsonSchema. class Person extends Model { static get jsonSchema() ... ... <看更多>

Default value filter for Angular JS applications - allows you to output a variable, ... it a default value if it has a value of 0, null, or is an empty string. ... <看更多>

someFunction(a, b, x = false) { // a and b are strings, x is true or false ... } In either case, the function can be called without x : ... <看更多>