Large applications: Advanced Search/replacement, regular expression exercise, Javascript script Debugger

Below is a javascript I designedProgramIt is simple, but it brings me great convenience. I have been using it to debug some javascript programs to test regular expression matching. Apart from searching and replacing common strings, you can also use regular expressions to implement advanced search/replace functions not available in a text editor.

It is easy to use. Enter a javascript program in the text box and click the execute script program button to run the program. If the program fails, a detailed error message is displayed. Enter a text in the text box, enter an expression in the query expression box (which can be a common string or regular expression), enter the text in the replacement box, and then perform search/replacement. This program also supports the multi-step Undo/Redo function.