User Manual
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Student
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Teacher
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Auto-marking
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Coding
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- Generate a Option List
- Deselecting All Options
- Choosing All Options
- Deselect Some Options
- Select Some Options
- Getting Options that are Selected
- Changing the Option List Size
- Drop Down List With Multiple Selections
- Checking Option List is Multiple or Not
- Setting Multiple Choices in Option List
- Getting All Options
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- Changing Margins
- Creating Space Around the Variable in Different Side
- Border Radius Width
- Changing Minimum Height
- Changing the Height of Variable or Layout
- Changing Maximum Width
- Changing Minimum Width
- Changing the Width of Variable or Layout
- Self Alignment Property
- Fitting the Space Available in Flex Container
- Flex Shorthand Property
- Changing Maximum Height
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- Adding Two Values
- Subtracting two numbers
- Multiplying two numbers
- Dividing two numbers
- Setting a Number
- Showing Remainder Between Two Numbers
- Finding the Minimum Values
- Finding the Maximum Values
- Changing the Number to Absolute Value
- Taking the Square Root
- Converting the Number to an Approximate Value
- Choosing the Random Value
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- Breaking Text with Separators
- Checking Whether the Text Contains Characters
- Finding the Position of the Character
- Checking Text is Empty or Not
- Showing Text in Substring Format
- Showing the Order of Characters in Two Texts
- Displaying Character at the Certain Position
- Using Character Code to Show Text
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- Converting Text to DateTimeOffset Format
- Generate a DateTimeOffset with Different Unit
- Generate DateTimeOffset Using Unix Time
- Using the Current Time to Display DateTimeOffset
- Combining a New Offset with DateTimeOffset
- Modifying Offset
- Changing the Format of DateTimeOffset to Text Format
- Converting DateTimeOffset to Text Format
- Adding DateTimeOffset with Duration
- Calculating the Duration Between Two DateTimeOffsets
- Checking Whether DateTimeOffsets are the Same
- Showing DateTimeOffset in Milliseconds
- Showing DateTimeOffset in Different Time Format
- Checking Whether DateTimeOffset is in Correct Type
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- Converting Text to Duration
- Transforming Number to Duration
- Converting String to Duration
- Making Opposite Duration
- Adding Two Durations
- Changing the Duration Unit
- Checking Whether Two Durations are the Same
- Displaying Total Number of Duration in Different Units
- Showing Duration in Number Format with Unit
- Checking Whether Duration is in Correct Data Type
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Coding - Pi
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- Adding Two Values
- Subtracting two numbers
- Multiplying two numbers
- Dividing two numbers
- Setting a Number
- Showing Remainder Between Two Numbers
- Finding the Minimum Values
- Finding the Maximum Values
- Taking the Square Root
- Converting the Number to an Approximate Value
- Changing the Number to Absolute Value
- Choosing the Random Value
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- Transforming Text to Number
- Concatenating the Text
- Checking the Length of Text
- Setting Text
- Breaking Text with Separators
- Checking Whether the Text Contains Characters
- Finding the Position of the Character
- Checking Text is Empty or Not
- Showing Text in Substring Format
- Showing the Order of Characters in Two Texts
- Displaying Character at the Certain Position
- Using Character Code to Show Text
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- Converting Text to DateTimeOffset Format
- Generate a DateTimeOffset with Different Unit
- Generate DateTimeOffset Using Unix Time
- Using the Current Time to Display DateTimeOffset
- Combining a New Offset with DateTimeOffset
- Modifying Offset
- Changing the Format of DateTimeOffset to Text Format
- Converting DateTimeOffset to Text Format
- Calculating the Duration Between Two DateTimeOffsets
- Adding DateTimeOffset with Duration
- Checking Whether DateTimeOffsets are the Same
- Showing DateTimeOffset in Milliseconds
- Showing DateTimeOffset in Different Time Format
- Checking Whether DateTimeOffset is in Correct Type
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- Converting Text to Duration
- Transforming Number to Duration
- Converting String to Duration
- Making Opposite Duration
- Adding Two Durations
- Changing the Duration Unit
- Checking Whether Two Durations are the Same
- Displaying Total Number of Duration in Different Units
- Showing Duration in Number Format with Unit
- Checking Whether Duration is in Correct Data Type
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- Loading Custom Pose Model from URL
- Classifying Pose on Image
- Classifying Pose on Image and Get All Result
- Showing the Class Labels in Pose Model
- Showing the Total Amount of Classes with Pose Model
- Draw All Skeleton and the Key Points
- Draw All Skeleton Inside a Photo
- Draw All Key Points Inside a Photo
Print
Checking Text is Empty or Not
Is empty
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"string_isempty\" disabled=\"true\" x=\"-22\" y=\"517\"><value name=\"this\"><shadow type=\"text\" disabled=\"true\"><field name=\"TEXT\">this</field></shadow></value></block></xml>"}
This block is used to check whether the text is empty.
Parameters: Screen Item/String
Output: Boolean (True/False)
Sample code:
{"blocks":"<xml xmlns=\"https://developers.google.com/blockly/xml\"><block type=\"pxt-on-start\" x=\"0\" y=\"0\"><statement name=\"HANDLER\"><block type=\"controls_if\"><mutation else=\"1\"/><value name=\"IF0\"><shadow type=\"logic_boolean\"><field name=\"BOOL\">TRUE</field></shadow><block type=\"string_isempty\"><value name=\"this\"><shadow type=\"text\"><field name=\"TEXT\"/></shadow></value></block></value><statement name=\"DO0\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"There is nothing inside.\"</field></block></value></block></statement><statement name=\"ELSE\"><block type=\"basic_consoleLogText\"><value name=\"text\"><block type=\"typescript_expression\"><field name=\"EXPRESSION\">\"There is something inside.\"</field></block></value></block></statement></block></statement></block></xml>"}
The output:
