JavaScript Programming Summary

1. 1. JS loading on the bottom
2. 2. js and CSS Merge, a page load of JS and css the less the better
3. 3. try to use variables, page non-global variables.
4. 4. The fewer scripts and Dom interactions, the better, as much as possible batch modification.
5. 5. Bulk Modify DOM object styles.
6. 6. do not use the for in loop.
7. 7. for loops of arrays, the array length needs to be saved to the variable, and then the loop, not for the for (Vari; I <arry.length;i++).
8. 8. Remove the duplicated code.
9. 9. Low coupling of the code, the script is step-loaded.

Replace multiple small images with a large picture.

. gzip enabled gzip compression

JavaScript Programming Summary