Method and device for lazy loading of js scripts

A device for lazy loading of JS scripts, the device comprising:

• a decision-making module that is configured to determine whether a target browser supports a sequential execution function of an async attribute;
• a controlling module that is configured to, if the target browser supports the sequential execution function of the async attribute, create a script tag for each of the JS scripts based on a URL address of each to-be-lazily loaded JS script, and set async=false for each script tag;
• and
• an executing module that is configured to sequentially insert each script tag into an HTML document according to a script execution order of each of the JS scripts, so that the target browser downloads each of the JS scripts in parallel, and executes each of the JS scripts according to the script execution order.

A terminal, comprising:

• a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set, or an instruction set, and the at least one instruction, the at least one program, the code set, or instruction set is loaded and executed by the processor to implement a method for lazy loading of JS scripts, the method comprising:
• determining whether a target browser supports a sequential execution function of an async attribute;
• if the target browser supports the sequential execution function of the async attribute, creating a script tag for each of the JS scripts based on a URL address for each of JS scripts to be lazily loaded, and setting async=false for each script tag;
• and
• sequentially inserting each script tag into an HTML document according to a script execution order of each of the JS scripts, so that the target browser downloads each of the JS scripts in parallel, and executes each of the JS scripts according to the script execution order.