Both trigger and triggerHandler simulate the occurrence of events. Use specific cases to describe the differences
When you click the checkbox, check the checkbox and assign input[type='text'] to www.baidu.com
When input[type='button'] is clicked, the same thing as clicking checkbox will happen
When trigger is replaced with triggerHandler, when input[type='button'] is clicked, only Assigning a value to input[type='text'] without checking the checkbox
triggerHandler prevents the default behavior of the element bound to the event