This is demo
{"ScriptPreparationCode":"console.log(\u0022js preparation\u0022);\r\nvar precompiledRE = new RegExp(\u0027o\u0027);","TestCases":[{"Name":"RegExp#test","Code":"/o/.test(\u0027Hello World!\u0027);","IsDeferred":false},{"Name":"String#indexOf","Code":"\u0027Hello World!\u0027.indexOf(\u0027o\u0027) \u003E -1;","IsDeferred":false},{"Name":"String#match","Code":"!!\u0027Hello World!\u0027.match(/o/);","IsDeferred":false},{"Name":"Using the same precompiled RegExp","Code":"precompiledRE.test(\u0027Hello World\u0027);","IsDeferred":false}]}