js常用语句（国外英文资料）.doc

js常用语句（国外英文资料） JS common statements A. write b. write c. write Output statements The comment in JS is / / The traditional HTML document order is document- HTML - (head, body) The DOM order in a browser window is window- (navigator, screen, history, location, document) Get the name and value of the element in the form: document.getelementbyidx_x ( ID number of the element in the form ).name (or value). A lowercase, uppercase JS: document.getelementbyidx_x ( output ).value = document.getelementby ( input ).value. The value type in JS: String, Number, Boolean, Null, Object, Function The characters in JS are converted to numeric: parseInt (), parseFloat () The number in JS is converted to a character type: ( variable ) The length of the fetch string in JS is (length) The characters in JS are associated with the characters. The comparison operators in JS are: = = = = = = = = = = = Thats not equal to In JS, declare variables: var to make statements The decision statement structure in JS: if (condition) {} else {} The loop structure in JS: for ([initial expression]; [condition]; [upadte expression]) {inside loop} The circular abort command is: break Function functionName ([parameter],...) {the statement [s]} When multiple form forms appear in the file, you can use document.forms [0], document.forms [1] instead. Window: open window window.open (), close a window: window.close (), the window itself: self The status bar Settings: window. Status = character; The pop-up message: window.alert ( character ); The pop-up confirmation box: window.confirm () Popup input prompt: mpt (); Specify the location of the current display link: window.location. Href = URL The number of all forms in the form: document.form.length Closing the output stream for the document: document.close (); The string appends: = Create a document element: document.createelement_x (), document.createtextnode () The method of getting elements: document.getelementbyidx_x () Set the value of all text members in